World Library  
Flag as Inappropriate
Email this Article


Article Id: WHEBN0000030043
Reproduction Date:

Title: Tellurium  
Author: World Heritage Encyclopedia
Language: English
Subject: Selenium, Livermorium, Polonium, Chalcogen, Periodic table
Collection: Chalcogens, Chemical Elements, Hexagonal Minerals, Metalloids, Tellurium
Publisher: World Heritage Encyclopedia


Tellurium,  52Te
General properties
Name, symbol tellurium, Te
Appearance silvery lustrous gray
Tellurium in the periodic table


Atomic number 52
Standard atomic weight 127.60(3)
Element category metalloid
Group, block group 16 (chalcogens), p-block
Period period 5
Electron configuration [Kr] 4d10 5s2 5p4
per shell 2, 8, 18, 18, 6
Physical properties
Phase solid
Melting point 722.66 K ​(449.51 °C, ​841.12 °F)
Boiling point 1261 K ​(988 °C, ​1810 °F)
Density near r.t. 6.24 g·cm−3
liquid, at m.p. 5.70 g·cm−3
Heat of fusion 17.49 kJ·mol−1
Heat of vaporization 114.1 kJ·mol−1
Molar heat capacity 25.73 J·mol−1·K−1
P (Pa) 1 10 100 1 k 10 k 100 k
at T (K)   (775) (888) 1042 1266
Atomic properties
Oxidation states 6, 5, 4, 2, −2 ​(a mildly acidic oxide)
Electronegativity Pauling scale: 2.1
Ionization energies 1st: 869.3 kJ·mol−1
2nd: 1790 kJ·mol−1
3rd: 2698 kJ·mol−1
Atomic radius empirical: 140 pm
Covalent radius 138±4 pm
Van der Waals radius 206 pm
Crystal structure hexagonal[1]
Hexagonal crystal structure for tellurium
Speed of sound thin rod, at 20 °C 2610 m·s−1
Thermal conductivity 1.97–3.38 W·m−1·K−1
Magnetic ordering diamagnetic[2]
Young's modulus 43 GPa
Shear modulus 16 GPa
Bulk modulus 65 GPa
Mohs hardness 2.25
Brinell hardness 180 MPa
CAS number 13494-80-9
Naming after Roman Tellus, deity of the Earth
Discovery Franz-Joseph Müller von Reichenstein (1782)
First isolation Martin Heinrich Klaproth
Most stable isotopes
iso NA half-life DM DE (MeV) DP
120Te 0.09% >2.2×1016 y (β+β+) 1.701 120Sn
121Te syn 16.78 d ε 1.040 121Sb
122Te 2.55% (SF) <30.974
123Te 0.89% >9.2×1016 y[3] (ε) 0.051 123Sb
124Te 4.74% (SF) <28.221
125Te 7.07% (SF) <26.966
126Te 18.84% (SF) <26.011
127Te syn 9.35 h β 0.698 127I
128Te 31.74% 2.2×1024 y ββ 0.867 128Xe
129Te syn 69.6 min β 1.498 129I
130Te 34.08% 7.9×1020 y ββ 2.528 130Xe
Decay modes in parentheses are predicted, but have not yet been observed

Tellurium is a chemical element with symbol Te and atomic number 52. A brittle, mildly toxic, rare, silver-white metalloid which looks similar to tin, tellurium is chemically related to selenium and sulfur. It is occasionally found in native form, as elemental crystals. Tellurium is far more common in the universe as a whole than it is on Earth. Its extreme rarity in the Earth's crust, comparable to that of platinum, is partly due to its high atomic number, but also due to its formation of a volatile hydride which caused the element to be lost to space as a gas during the hot nebular formation of the planet.

Tellurium was discovered in Habsburg Empire, in 1782 by Franz-Joseph Müller von Reichenstein in a mineral containing tellurium and gold. Martin Heinrich Klaproth named the new element in 1798 after the Latin word for "earth", tellus. Gold telluride minerals are the most notable natural gold compounds. However, they are not a commercially significant source of tellurium itself, which is normally extracted as a by-product of copper and lead production.

Commercially, the primary use of tellurium is in alloys, foremost in steel and copper to improve machinability. Applications in solar panels and as a semiconductor material also consume a considerable fraction of tellurium production.

Tellurium has no biological function, although fungi can incorporate it in place of sulfur and selenium into amino acids such as tellurocysteine and telluromethionine.[4] In humans, tellurium is partly metabolized into dimethyl telluride, (CH3)2Te, a gas with a garlic-like odor which is exhaled in the breath of victims of tellurium toxicity or exposure.


  • Characteristics 1
    • Physical properties 1.1
    • Chemical properties 1.2
    • Isotopes 1.3
    • Occurrence 1.4
  • History 2
  • Production 3
  • Compounds 4
  • Applications 5
    • Metallurgy 5.1
    • Semiconductor and electronic industry uses 5.2
    • Other uses 5.3
  • Biological role 6
  • Precautions 7
  • See also 8
  • References 9
  • External links 10


Physical properties

When crystalline, tellurium is silvery-white and when it is in pure state it has a metallic luster. It is a brittle and easily pulverized metalloid. Amorphous tellurium is found by precipitating it from a solution of tellurous or telluric acid (Te(OH)6).[5] Tellurium is a semiconductor that shows a greater electrical conductivity in certain directions which depends on atomic alignment; the conductivity increases slightly when exposed to light (photoconductivity).[6] When in its molten state, tellurium is corrosive to copper, iron and stainless steel.

Chemical properties

Tellurium adopts a polymeric structure, consisting of zig-zag chains of Te atoms. This gray material resists oxidation by air and is nonvolatile.


Naturally occurring tellurium has eight isotopes. Five of those isotopes, 122Te, 123Te, 124Te, 125Te and 126Te, are stable. The other three, 120Te, 128Te and 130Te, have been observed to be radioactive.[7][8][9] The stable isotopes make up only 33.2% of the naturally occurring tellurium; this is possibly due to the long half-lives of the unstable isotopes. They are in the range from 1013 to 2.2 × 1024 years (for 128Te). This makes 128Te the isotope with the longest half life among all radionuclides,[10] which is approximately 160 trillion (1012) times the age of known universe.

There are 38 known nuclear isomers of tellurium with atomic masses that range from 105 to 142. Tellurium is among the lightest elements known to undergo alpha decay, with isotopes 106Te to 110Te being able to undergo this mode of decay.[7] The atomic mass of tellurium (127.60 g·mol−1) exceeds that of the following element iodine (126.90 g·mol−1).[11]


A dark mass, approximately 2 millimetres in diameter, on a rose-coloured crystal substrate
Tellurium on quartz (Moctezuma, Sonora, Mexico)

Native tellurium crystal on sylvanite (Vatukoula, Viti Levu, Fiji). Picture width 2 mm.

With an abundance in the Earth's crust comparable to that of platinum, tellurium is one of the rarest stable solid elements in the Earth's crust. Its abundance is about 1 µg/kg.[12] In comparison, even the rarest of the lanthanides have crustal abundances of 500 µg/kg (see Abundance of the chemical elements).[13]

The extreme rarity of tellurium in the Earth's crust is not a reflection of its cosmic abundance, which is in fact greater than that of rubidium, even though rubidium is ten thousand times more abundant in the Earth's crust. The extraordinarily low abundance of tellurium on Earth is rather thought to be due to conditions in the Earth's formation, when the stable form of certain elements, in the absence of oxygen and water, was controlled by the reductive power of free hydrogen. Under this scenario, certain elements such as tellurium which form volatile hydrides were severely depleted during the formation of the Earth's crust, through evaporation of these hydrides. Tellurium and selenium are the heavy elements most depleted in the Earth's crust by this process.

Tellurium is sometimes found in its native (i.e., elemental) form, but is more often found as the tellurides of gold such as calaverite and krennerite (two different polymorphs of AuTe2), petzite, Ag3AuTe2, and sylvanite, AgAuTe4. The city of Telluride, Colorado was named in hope of a strike of gold telluride (which never materialized, though gold metal ore was found). Gold itself is usually found uncombined, but when found naturally as a chemical compound, it is most often combined with tellurium.

Although tellurium is found with gold more often than in uncombined form, it is found even more often combined with elements other than gold, as tellurides of more common metals (e.g. melonite, NiTe2). Natural tellurite and tellurate minerals also occur, formed by oxidation of tellurides near the Earth's surface. In contrast to selenium, tellurium is not in general able to replace sulfur in its minerals, due to the large difference in ion radius of sulfur and tellurium. In consequence, many common sulfide minerals contain considerable amounts of selenium, but only traces of tellurium.[14]

In the gold rush of 1893, diggers in Kalgoorlie discarded a pyritic material which got in their way as they searched for pure gold. The Kalgoorlie waste was thus used to fill in potholes or as part of sidewalks. Three years passed before it was realized that this waste was calaverite, a telluride of gold that had not been recognized. This led to a second gold rush in 1896 which included mining the streets.[15]


Oval black and white engraving of a man looking left with a scarf and a coat with large buttons.
Klaproth named the new element and credited von Reichenstein with its discovery

Tellurium (Latin tellus meaning "goddess of the earth") was discovered in the 18th century in a gold ore from the mines in Zlatna, near today's city of Sibiu, Romania. This ore was known as "Faczebajer weißes blättriges Golderz" (white leafy gold ore from Faczebaja, German name of Facebánya, now Faţa Băii in Alba County) or antimonalischer Goldkies (antimonic gold pyrite), and, according to Anton von Rupprecht, was Spießglaskönig (argent molybdique), containing native antimony.[16][17] In 1782 Franz-Joseph Müller von Reichenstein, who was then serving as the Austrian chief inspector of mines in Transylvania, concluded that the ore did not contain antimony, but that it was bismuth sulfide.[18] The following year, he reported that this was erroneous and that the ore contained mostly gold and an unknown metal very similar to antimony. After a thorough investigation which lasted for three years and consisted of more than fifty tests, Müller determined the specific gravity of the mineral and noted the radish-like odor of the white smoke which passed off when the new metal was heated, the red color which the metal imparts to sulfuric acid, and the black precipitate which this solution gives when diluted with water. Nevertheless, he was not able to identify this metal and gave it the names aurum paradoxium and metallum problematicum, as it did not show the properties predicted for the expected antimony.[19][20][21]

In 1789, a Hungarian scientist, Pál Kitaibel, also discovered the element independently in an ore from Deutsch-Pilsen which had been regarded as argentiferous molybdenite, but later he gave the credit to Müller. In 1798, it was named by Martin Heinrich Klaproth who had earlier isolated it from the mineral calaverite.[22][20][21][23] The 1960s brought growth in thermoelectric applications for tellurium (as bismuth telluride), as well as its use in free-machining steel, which became the dominant use.[24]


The principal source of tellurium is from anode sludges produced during the electrolytic refining of blister copper. It is a component of dusts from blast furnace refining of lead. Treatment of 1000 tons of copper ore typically yields one kilogram (2.2 pounds) of tellurium. Tellurium is produced mainly in the United States, Peru, Japan and Canada.[25] For the year 2009 the British Geological Survey gives the following numbers: United States 50 t, Peru 7 t, Japan 40 t and Canada 16 t.[26]

Grey and white world map with four countries colored to show the percentage of world wide tellurium production. US to produce 40%; Peru 30%; Japan 20% and Canada 10%.
Tellurium production 2006

The anode sludges contain the selenides and tellurides of the noble metals in compounds with the formula M2Se or M2Te (M = Cu, Ag, Au). At temperatures of 500 °C the anode sludges are roasted with sodium carbonate under air. The metal ions are reduced to the metals, while the telluride is converted to sodium tellurite.[27]

M2Te + O2 + Na2CO3 → Na2TeO3 + 2 M + CO2

Tellurites can be leached from the mixture with water and are normally present as hydrotellurites HTeO3 in solution. Selenites are also formed during this process, but they can be separated by adding sulfuric acid. The hydrotellurites are converted into the insoluble tellurium dioxide while the selenites stay in solution.[27]

+ OH + H2SO4 → TeO2 + SO2−
+ 2 H2O

The reduction to the metal is done either by electrolysis or by reacting the tellurium dioxide with sulfur dioxide in sulfuric acid.[27]

TeO2 + 2 SO2 + 2H2O → Te + SO2−
+ 4 H+

Commercial-grade tellurium is usually marketed as 200-mesh powder but is also available as slabs, ingots, sticks, or lumps. The year-end price for tellurium in 2000 was US$14 per pound. In recent years, the tellurium price was driven up by increased demand and limited supply, reaching as high as US$100 per pound in 2006.[28][29] Despite an expected doubling in production due to improved extraction methods, the United States Department of Energy (DoE) anticipates a supply shortfall of tellurium by 2025.[30]


Tellurium belongs to the same chemical family as oxygen, sulfur, selenium and polonium: the chalcogen family. Tellurium and selenium compounds are similar. It exhibits the oxidation states −2, +2, +4 and +6, with the +4 state being most common.[5]


Reduction of Te metal produces the tellurides and polytellurides, Ten2–. The −2 oxidation state is exhibited in binary compounds with many metals, such as zinc telluride, ZnTe, formed by heating tellurium with zinc.[31] Decomposition of ZnTe with hydrochloric acid yields hydrogen telluride (H
), a highly unstable analogue of the other chalcogen hydrides, H
, H
and H

ZnTe + 2 HCl → ZnCl
+ H

is unstable, whereas salts of its conjugate base [TeH] are stable.


The +2 oxidation state is exhibited by the dihalides, TeCl
, TeBr
and TeI
. The dihalides have not been obtained in pure form,[32]:274 although they are known decomposition products of the tetrahalides in organic solvents, and their derived tetrahalotellurates are well-characterized:

Te + X
+ 2 X

where X is Cl, Br, or I. These anions are square planar in geometry.[32]:281 Polynuclear anionic species also exist, such as the dark brown Te
,[32]:283 and the black Te

Fluorine forms two halides with tellurium: the mixed-valence Te
and TeF
. In the +6 oxidation state, the –OTeF
structural group occurs in a number of compounds such as HOTeF
, B(OTeF
, Xe(OTeF
, Te(OTeF
and Te(OTeF
.[33] The square antiprismatic anion TeF2−
is also attested.[27] The other halogens do not form halides with tellurium in the +6 oxidation state, but only tetrahalides (TeCl
, TeBr
and TeI
) in the +4 state, and other lower halides (Te
, Te
, Te
, Te
and two forms of TeI). In the +4 oxidation state, halotellurate anions are known, such as TeCl2−
and Te
. Halotellurium cations are also attested, including TeI+
, found in TeI

A sample of pale yellow powder
A sample of tellurium dioxide powder

Tellurium monoxide was first reported in 1883 as a black amorphous solid formed by the heat decomposition of TeSO
in vacuum, disproportionating into tellurium dioxide, TeO
and elemental tellurium upon heating.[35][36] Since then, however, some doubt has been cast on its existence in the solid phase, although it is known as a vapor phase fragment; the black solid may be merely an equimolar mixture of elemental tellurium and tellurium dioxide.[37]

Tellurium dioxide is formed by heating tellurium in air, causing it to burn with a blue flame.[31] Tellurium trioxide, β-TeO
, is obtained by thermal decomposition of Te(OH)
. The other two forms of trioxide reported in the literature, the α- and γ- forms, were found not to be true oxides of tellurium in the +6 oxidation state, but a mixture of Te4+
, OH
and O
.[38] Tellurium also exhibits mixed-valence oxides, Te
and Te

The tellurium oxides and hydrated oxides form a series of acids, including tellurous acid (H
), orthotelluric acid (Te(OH)
) and metatelluric acid ((H
).[37] The two forms of telluric acid form tellurate salts containing the TeO2–
and TeO6−
anions, respectively. Tellurous acid forms tellurite salts containing the anion TeO2−
. Other tellurium cations include TeF2+
, which consists of two fused tellurium rings and the polymeric TeF2+

Zintl cations

When tellurium is treated with concentrated sulfuric acid, it forms red solutions containing the Zintl ion, Te2+
.[39] The oxidation of tellurium by AsF
in liquid SO
also produces this square planar cation, as well as with the trigonal prismatic, yellow-orange Te4+

4 Te + 3 AsF
+ AsF
6 Te + 6 AsF
+ 2 AsF

Other tellurium Zintl cations include the polymeric Te2+
and the blue-black Te2+
, which consists of two fused 5-membered tellurium rings. The latter cation is formed by the reaction of tellurium with tungsten hexachloride:[27]

8 Te + 2 WCl

Interchalcogen cations also exist, such as Te
(distorted cubic geometry) and Te
. These are formed by oxidizing mixtures of tellurium and selenium with AsF
or SbF

Organotellurium compounds

Tellurium does not readily form analogues of alcohols and thiols, with the functional group –TeH and are called tellurols. The –TeH functional group is also attributed to using the prefix tellanyl-.[40] Like H2Te, these species are unstable with respect to loss of hydrogen. Telluraethers (R-Te-R) are more stable as are telluroxides.



The largest consumer of tellurium is metallurgy, where it is used in iron, copper and lead alloys. When added to stainless steel and copper it makes these metals more machinable. It is alloyed into cast iron for promoting chill for spectroscopic purposes, as the presence of electrically conductive free graphite tends to deleteriously affect spark emission testing results. In lead it improves strength and durability and decreases the corrosive action of sulfuric acid.[24][41]

Semiconductor and electronic industry uses

Tellurium is used in cadmium telluride (CdTe) solar panels. National Renewable Energy Laboratory lab tests using this material achieved some of the highest efficiencies for solar cell electric power generation. Massive commercial production of CdTe solar panels by First Solar in recent years has significantly increased tellurium demand.[42][43][44] If some of the cadmium in CdTe is replaced by zinc then (Cd,Zn)Te is formed which is used in solid-state X-ray detectors.[45]

Alloyed with both cadmium and selenium and tellurium are used. The compounds for semiconductor industry and are prepared by adduct purification.[49][50]

Tellurium as a tellurium suboxide is used in the media layer of several types of rewritable optical discs, including ReWritable Compact Discs (CD-RW), ReWritable Digital Video Discs (DVD-RW) and ReWritable Blu-ray Discs.[51][52]

Tellerium dioxide is used to create acousto-optic modulators (AOTFs and AOBSs) for confocal microscropy.

Tellurium is used in the new phase change memory chips[53] developed by Intel.[54] Bismuth telluride (Bi2Te3) and lead telluride are working elements of thermoelectric devices. Lead telluride is used in far-infrared detectors.

Other uses

  • Used to color ceramics.[55]
  • The strong increase in optical refraction upon the addition of selenides and tellurides into glass is used in the production of glass fibers for telecommunications. These chalcogenide glasses are widely used.[56][57]
  • Mixtures of selenium and tellurium are used with barium peroxide as oxidizer in the delay powder of electric blasting caps.[58]
  • Organic tellurides have been employed as initiators for living radical polymerization and electron-rich mono- and di-tellurides possess antioxidant activity.
  • Rubber can be vulcanized with tellurium instead of sulfur or selenium. The rubber produced in this way shows improved heat resistance.[59]
  • Tellurite agar is used to identify member of the corynebacterium genus, most typically Corynebacterium diphtheriae, the pathogen responsible for diphtheria.[60]

Biological role

Tellurium has no known biological function, although fungi can incorporate it in place of sulfur and selenium into amino acids such as telluro-cysteine and telluro-methionine.[4][61] Organisms have shown a highly variable tolerance to tellurium compounds. Many cells take up tellurite and reduce it to elemental tellurium which accumulates and causes a characteristic and often dramatic darkening of cells. In yeast, this reduction is mediated by the sulfate assimilation pathway.[62] Tellurium accumulation seems to account for a major part of the toxicity effects. Many organisms also metabolize tellurium partly to form dimethyl telluride although dimethyl ditelluride is also formed by some species. Dimethyl telluride has been observed in hot springs at very low concentrations.[63][64]


Tellurium and tellurium compounds are considered to be mildly toxic and need to be handled with care, although acute poisoning is rare.[65] Tellurium is not reported to be carcinogenic.[65]

Humans exposed to as little as 0.01 mg/m3 or less in air exude a foul garlic-like odor known as "tellurium breath."[55] This is caused from the tellurium being metabolized by the body, converting it from any oxidation state to dimethyl telluride, (CH3)2Te. This is a volatile compound with a highly pungent garlic-like smell. Even though the metabolic pathways of tellurium are not known, it is generally assumed that they resemble those of the more extensively studied selenium, because the final methylated metabolic products of the two elements are similar.[66][67][68]

See also


  1. ^ Tellurium,
  2. ^ Magnetic susceptibility of the elements and inorganic compounds, in Handbook of Chemistry and Physics 81st edition, CRC press.
  3. ^ New Limits on Naturally Occurring Electron Capture of 123Te full paper on arXiv URL: [1] DOI: 10.1103/PhysRevC.67.014323.
  4. ^ a b Ramadan, Shadia E.; Razak, A. A.; Ragab, A. M.; El-Meleigy, M. (1989). "Incorporation of tellurium into amino acids and proteins in a tellurium-tolerant fungi". Biological Trace Element Research 20 (3): 225–32.  
  5. ^ a b Leddicotte, G. W. (1961). "The radiochemistry of tellurium". Nuclear science series (3038). Subcommittee on Radiochemistry, National Academy of Sciences-National Research Council. p. 5 
  6. ^ Berger, Lev Isaakovich (1997). "Tellurium". Semiconductor materials. CRC Press. pp. 89–91.  
  7. ^ a b Audi, G.; Bersillon, O.; Blachot, J.; Wapstra, A.H. (2003). "The NUBASE Evaluation of Nuclear and Decay Properties". Nuclear Physics A (Atomic Mass Data Center) 729: 3–128.  
  8. ^ "WWW Table of Radioactive Isotopes: Tellurium". Nuclear Science Division, Lawrence Berkeley National Laboratory. 2008. Retrieved 2010-01-16. 
  9. ^ A. Alessandrello et al. New Limits on Naturally Occurring Electron Capture of 123Te. Phys. Rev. C 67 (2003) 014323.
  10. ^ "Noble Gas Research". Laboratory for Space Sciences, Washington University in St. Louis. 2008. Retrieved 2013-01-10. 
  11. ^ Emsley, John (2003). "Nature's building blocks: an A-Z guide to the elements". Oxford University Press. pp. 426–429.  
  12. ^ Ayres, Robert U.; Ayres, Leslie (2002). A handbook of industrial ecology. Edward Elgar Publishing. p. 396.  
  13. ^ Suess, Hans; Urey, Harold (1956). "Abundances of the Elements". Reviews of Modern Physics 28: 53.  
  14. ^ Nekrasov, I. Y. (1996). "Phase Relations in the Selenide Telluride Systems". Geochemistry, mineralogy and genesis of gold deposits. Taylor & Francis. pp. 217–256.  
  15. ^  
  16. ^ v. Born, Abh. Privatges. v. Böhmen 5 (1782): 383.
  17. ^ Rupprecht, von, A. (1783). "Über den vermeintlichen siebenbürgischen natürlichen Spiessglaskönig" [On the supposedly native antimony of Transylvania]. Physikalische Arbeiten der einträchtigen Freunde in Wien 1 (1): 70–74. 
  18. ^ Müller, F.J. (1783). "Über den vermeintlichen natürlichen Spiessglaskönig". Physikalische Arbeiten der einträchtigen Freunde in Wien 1 (1): 57–59. 
  19. ^ von Reichenstein, F.J.M. (1783). "Versuche mit dem in der Grube Mariahilf in dem Gebirge Fazeby bey Zalathna vorkommenden vermeinten gediegenen Spiesglanzkönig" [Experiments with supposedly native antimony occurring in the Mariahilf mine in the Fazeby mountains near Zalathna]. Physikalische Arbeiten der einträchtigen Freunde in Wien 1783 (1.Quartal): 63–69. 
  20. ^ a b Diemann, Ekkehard; Müller, Achim; Barbu, Horia (2002). "Die spannende Entdeckungsgeschichte des Tellurs (1782–1798) Bedeutung und Komplexität von Elemententdeckungen". Chemie in unserer Zeit 36 (5): 334–337.  
  21. ^ a b  
  22. ^ Klaproth (1798) "Ueber die siebenbürgischen Golderze, und das in selbigen enthaltene neue Metall" (On the Transylvanian gold ore, and the new metal contained in it), Chemische Annalen für die Freunde der Naturlehre, Arzneygelahrtheit, Haushaltungskunst und Manufacturen (Chemical Annals for the Friends of Science, Medicine, Economics, and Manufacturing), 1 : 91-104. From page 100: " … ; und welchem ich hiermit den, von der alten Muttererde entlehnten, Namen Tellurium beylege." ( … ; and to which I hereby bestow the name tellurium, derived from the old Mother of the Earth.)
  23. ^  
  24. ^ a b George, Micheal W. (2007). "Mineral Yearbook 2007: Selenium and Tellurium". United States geological Survey. 
  25. ^ Addicks, Lawrence (2008). "By-Products". Copper Refining. Read books. pp. 111–114.  
  26. ^ Brown, TJ (2011). World mineral statistics British Geological Survey. Keyworth, Nottingham. p. 95.  
  27. ^ a b c d e f g Wiberg, Egon; Holleman, Arnold Frederick (2001). Nils Wiberg, ed. Inorganic chemistry. translated by Mary Eagleson. Academic Press. p. 588.  
  28. ^ "An Arizona tellurium rush?". May 21, 2007. Retrieved 2009-08-08. 
  29. ^ "Byproducts Part I: Is There a Tellurium Rush in the Making?". April 19, 2007. Retrieved 2009-08-08. 
  30. ^ New Scientist, 18 June 2011, p. 39
  31. ^ a b  
  32. ^ a b c d Emeleus, H. J. (1990). A. G. Sykes, ed. Advances in Inorganic Chemistry 35. Academic Press.  
  33. ^ Holloway, John H.; Laycock, David (1983). "Preparations and Reactions of Inorganic Main-Group Oxide-Fluorides". In Harry Julius Emeléus, A. G. Sharpe. Advances in inorganic chemistry and radiochemistry. Serial Publication Series 27. Academic Press. p. 174.  
  34. ^ Xu, Zhengtao (2007). "Recent developments in binary halogen-chalcogen compounds, polyanions and polycations". In Francesco A. Devillanova. Handbook of chalcogen chemistry: new perspectives in sulfur, selenium and tellurium. Royal Society of Chemistry. pp. 457–466.  
  35. ^ Schwartz, Mel M. (2002). "Tellurium". Encyclopedia of materials, parts, and finishes (2nd ed.). CRC Press.  
  36. ^ Divers, Edward; Shimosé, M. (1883). "On a new oxide of tellurium". Journal of the Chemical Society 43: 319–323.  
  37. ^ a b Dutton, W. A.; Cooper, W. Charles (1966). "The Oxides and Oxyacids of Tellurium". Chemical Reviews 66 (6): 657.  
  38. ^ a b Wickleder, Mathias S. (2007). "Chalcogen-Oxygen Chemistry". In Francesco A. Devillanova. Handbook of chalcogen chemistry: new perspectives in sulfur, selenium and tellurium. Royal Society of Chemistry. pp. 348–350.  
  39. ^ Arpad Molnar; George Andrew Olah; G. K. Surya Prakash; Jean Sommer (2009). Superacid Chemistry (2nd ed.). Wiley-Interscience. pp. 444–445.  
  40. ^ Sadekov, I. D.; Zakharov, A. V. (1999). "Stable tellurols and their metal derivatives". Russian Chemical Reviews 68 (11): 909–923.  
  41. ^
  42. ^ Fthenakis, Vasilis M.; Kim, Hyung Chul; Alsema, Erik (2008). "Emissions from Photovoltaic Life Cycles". Environmental Science & Technology 42 (6): 2168.  
  43. ^ Sinha, Parikhit; Kriegner, Christopher J.; Schew, William A.; Kaczmar, Swiatoslav W.; Traister, Matthew; Wilson, David J. (2008). "Regulatory policy governing cadmium-telluride photovoltaics: A case study contrasting life cycle management with the precautionary principle". Energy Policy 36: 381.  
  44. ^ Zweibel, K. (2010). "The Impact of Tellurium Supply on Cadmium Telluride Photovoltaics". Science 328 (5979): 699–701.  
  45. ^ Saha, Gopal B. (2001). "Cadmium zinc telluride detector". Physics and radiobiology of nuclear medicine. New York: Springer. pp. 87–88.  
  46. ^ Willardson, R.K. and Beer, Albert C, ed. (1981). Mercury cadmium telluride. New York: Academic Press.  
  47. ^ Capper, Peter; Elliott, C. T., ed. (2001). "Metalorganic vapour phase epitaxy". Infrared detectors and emitters : materials and devices. Boston, Mass.: Kluwer Academic. pp. 265–267.  
  48. ^ Shenai-Khatkhate, Deodatta V.; Webb, Paul; Cole-Hamilton, David J.; Blackmore, Graham W.; Brian Mullin, J. (1988). "Ultra-pure organotellurium precursors for the low-temperature MOVPE growth of II/VI compound semiconductors". Journal of Crystal Growth 93 (1–4): 744–749.  
  49. ^ Shenai-Khatkhate, Deodatta V.; Parker, M. B.; McQueen, A. E. D.; Mullin, J. B.; Cole-Hamilton, D. J.; Day, P. (1990). "Organometallic Molecules for Semiconductor Fabrication [and Discussion]". Phil. Trans. R. Soc. Lond. A 330 (1610): 173–182.  
  50. ^ Mullin, J.B.; Cole-Hamilton, D.J.; Shenai-Khatkhate, D.V.; Webb P. U.S. Patent 5,117,021 "Method for purification of tellurium and selenium alkyls", May 26, 1992
  51. ^ Farivar, Cyrus (2006-10-19). "Panasonic says that its 100GB Blu-ray discs will last a century". Retrieved 2008-11-13. 
  52. ^ Nishiuchi, Kenichi; Kitaura, Hideki; Yamada, Noboru; Akahira, Nobuo (1998). "Dual-Layer Optical Disk with Te–O–Pd Phase-Change Film". Japanese Journal of Applied Physics 37: 2163–2167.  
  53. ^ Hudgens, S.; Johnson, B. (2004). "Overview of Phase-Change Chalcogenide Nonvolatile Memory Technology". Material Research Society Bulletin 29 (11): 1–4.  
  54. ^ Geppert, Linda (2003). "The New Indelible Memories". Spectrum, IEEE 40 (3): 48–54.  
  55. ^ a b Lide, D. R., ed. (2005). CRC Handbook of Chemistry and Physics (86th ed.). Boca Raton (FL): CRC Press.  
  56. ^ Nishii, J.; Morimoto, S.; Inagawa, I.; Iizuka, R.; Yamashita, T.; Yamagishi, T. (1992). "Recent advances and trends in chalcogenide glass fiber technology: a review". Journal of Non-Crystalline Solids 140: 199.  
  57. ^ El-Mallawany, Raouf A. H. (2002). Tellurite glasses handbook: physical properties and data. CRC Press. pp. 1–11.  
  58. ^ Johnson, L. B. (1960). "Correspondence. Representing Delay Powder Data". Industrial & Engineering Chemistry 52 (10): 868.  
  59. ^ Morton, Maurice (1987). "Sulfur and Related Elements". Rubber Technology. Springer. p. 42.  
  60. ^ Kwantes, W. (1984). "Diphtheria in Europe". The Journal of Hygiene 93 (3): 433–437.  
  61. ^ Atta-ur- Rahman (2008). Studies in Natural Products Chemistry. Elsevier. pp. 905–.  
  62. ^ Ottosson, LG.; Logg, K; Ibstedt, S; Sunnerhagen, P; Käll, M; Blomberg, A; Warringer, J (2010). "Sulfate assimilation mediates tellurite reduction and toxicity in Saccharomyces cerevisiae". Eukaryotic Cell 9 (10): 1635–47.  
  63. ^ Chasteen, Thomas G.; Bentley, Ronald (2003). "Biomethylation of Selenium and Tellurium: Microorganisms and Plants". Chemical Reviews 103 (1): 1–26.  
  64. ^ Taylor, Andrew (1996). "Biochemistry of tellurium". Biological Trace Element Research 55 (3): 231–9.  
  65. ^ a b Harrison, W.; Bradberry, S.; Vale, J. (1998-01-28). "Tellurium".  
  66. ^ Wright, PL; B (1966). "Comparative metabolism of selenium and tellurium in sheep and swine". AJP – Legacy 211 (1): 6–10.  
  67. ^ Müller, R.; Zschiesche, W.; Steffen, H. M.; Schaller, K. H. (1989). "Tellurium-intoxication". Klinische Wochenschrift 67 (22): 1152–5.  
  68. ^ Taylor, Andrew (1996). "Biochemistry of tellurium". Biological Trace Element Research 55 (3): 231–239.  

External links

  • USGS Mineral Information on Selenium and Tellurium
  • Tellurium at The Periodic Table of Videos (University of Nottingham)
  • CDC - NIOSH Pocket Guide to Chemical Hazards - Tellurium
This article was sourced from Creative Commons Attribution-ShareAlike License; additional terms may apply. World Heritage Encyclopedia content is assembled from numerous content providers, Open Access Publishing, and in compliance with The Fair Access to Science and Technology Research Act (FASTR), Wikimedia Foundation, Inc., Public Library of Science, The Encyclopedia of Life, Open Book Publishers (OBP), PubMed, U.S. National Library of Medicine, National Center for Biotechnology Information, U.S. National Library of Medicine, National Institutes of Health (NIH), U.S. Department of Health & Human Services, and, which sources content from all federal, state, local, tribal, and territorial government publication portals (.gov, .mil, .edu). Funding for and content contributors is made possible from the U.S. Congress, E-Government Act of 2002.
Crowd sourced content that is contributed to World Heritage Encyclopedia is peer reviewed and edited by our editorial staff to ensure quality scholarly research articles.
By using this site, you agree to the Terms of Use and Privacy Policy. World Heritage Encyclopedia™ is a registered trademark of the World Public Library Association, a non-profit organization.

Copyright © World Library Foundation. All rights reserved. eBooks from Hawaii eBook Library are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.