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3 edition of Determination of Tellurium. found in the catalog.

Determination of Tellurium.

United States. Bureau of Mines.

Determination of Tellurium.

by United States. Bureau of Mines.

  • 348 Want to read
  • 30 Currently reading

Published by s.n in S.l .
Written in English


Edition Notes

1

SeriesReport of investigations (United States. Bureau of Mines) -- 6201
ContributionsAnderson, W., Peterson, H.
ID Numbers
Open LibraryOL21742446M

  Measurements were made using a high-temperature flash photolysis system at a tellurium vapor pressure of Torr, a xenon pressure of 20 Torr, and a cell temperature of °K. The afterglow was attributed to the photorecombination of tellurium atoms in the ground state 3 P 0,1,2. Verbeiren P., Dumont F., Buess-Herman C. () Determination of the complex refractive index of bulk tellurium and its use in particle size determination. In: Solans C., Infante M.R., García-Celma M.J. (eds) Trends in Colloid and Interface Science X. Progress in Colloid & Polymer Science, vol Steinkopff. First Online 03 December

A fast, simple, and reliable chemical method for tellurite quantification is described. The procedure is based on the NaBH 4-mediated reduction of TeO 3 2− followed by the spectrophotometric determination of elemental tellurium in solution. The method is highly reproducible, is stable at different pH values, and exhibits linearity over a broad range of tellurite concentrations. @article{osti_, title = {Determination of tellurium and selenium in atmospheric aerosol samples by graphite furnace atomic absorption spectrometry}, author = {Chiou, K Y and Manuel, O K}, abstractNote = {A method has been developed for the determination of Te and Se in atmospheric aerosols by ion exchange and atomic absorption (AA) using a graphic furnace atomizer.

The ionic radius for an atom is measured in a crystal lattice, requiring a solid form for the compound. These radii will differ somewhat depending upon the technique used. Usually X-ray crystallography is employed to determine the radius for an ion. Get this from a library! Determination of selenium and tellurium oxyanion toxicity, detection of metalloid-containing headspace compounds, and quantification of metalloid oxyanions in .


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Determination of Tellurium by United States. Bureau of Mines. Download PDF EPUB FB2

A method for the determination of the dopant concentration of tellurium in dissolved indium antimonide semiconductor material by electrothermal atomic absorption spectrometry (ETAAS) was s were made to investigate the optimal conditions of the furnace heating program and the effect of palladium modifier on the variation of tellurium and the background absorbance.

PDF | On Oct 2,M.S. El-Shahawi and others published Speciation and Determination of Tellurium in Water, Soil, Sediment and other Environmental Samples |.

Silica gel loaded with nano-TiO 2 was used as solid phase extraction materials to prepare a microcolumn for the online enrichment of trace tellurium in water and then determined by hydride generation atomic absorption spectrometry (HG-AAS).

The effect of pH and the flow rate of sample on the extraction efficiency, NaOH concentration Determination of Tellurium. book the elution efficiency and other factors influencing Cited by: 9.

determination is percent tellurium, which is equivalent to gram of tellurium when using a la-gram sample. The spectrophotometric method is particularly applicable t~ low-tenor materials containing from 0,5 to 50 parts per million of tellurium.

Up to The methods allowed the determination of tellurium at levels down to µg for LSC and µg for Cerenkov counting in a final volume of 40 ml. Quenching studies were carried out on the basis of the spectral index of the sample (SIS), which is a very sensitive quench indicating Determination of Tellurium.

book, and the results clearly revealed the absence of. An atomic absorption method for the determination of bismuth and tellurium in exposed animal tissue is described.

Samples are wetashed with nitric acid. A hydrochloric acid solution, containing 4 mg of tissue ash per ml of solution, is used for the determination of Bi and Te. No chemical separations are used. Determination of Tellurium Small quantities of tellurium are difficult to determine and the difficulties are compounded by the somewhat lower (than selenium) levels encountered.

Hanson (14) has described a spectrophotometric procedure based upon the reduction of tellurium to a colloidal form by adding stannous chloride solution.

The red fluorescence of tellurium(IV) in about 9 M hydrochloric acid glass at –° C has been used for the spectrofluorimetric determination of tellurium in the 002 to 064 p.p.m. range. The optimum conditions for the determination have been established, and the effects of fifty foreign ions have been examined at the fold weight excess level.

A spectrophotometric method for the determination of trace amounts of tellurium(IV) in dilute hydrochloric acid is described. Concentrations of between and 7 µg ml –1 of tellurium(IV) in the final solution can be determined by measuring the absorbance at nm of the complex formed by the reaction of tellurium(IV) with tetramethylthiourea (ε= × 10 4 l mol –1 cm –1).

absorbance acid Acta 23B added addition alloys aluminum amount Anal ANALYSIS Analytical Appl APPLICATION aqueous Atomic Absorption Newsletter ATOMIC ABSORPTION SPECTROPHOTOMETRY ATOMIC ABSORPTION SPECTROSCOPY ATOMIC FLUORESCENCE barium beaker beryllium boat burner cadmium calcium calibration curves Cd(II Chem Chemical.

The thermal stabilization of inorganic tellurium(IV) and organically-bound tellurium for electrothermal atomic absorption spectrometric determination of the element was studied with the use of the.

For the determination of tellurium in electrolytes consisting of 2 M ammonium acetate-2 M acetic acid or 05 M sodium carbonate solution, the indium can readily be masked by EDTA. Mercury is determined spectrophotometrically at nm as the extracted dithizone complex. In book: Handbook on the Toxicology of Metals, pp (IV) by L-cysteine prior to the determination of total tellurium, and its assay was based on subtracting Te(IV) from total.

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Analytical Chemistry52 (4), DOI: /aca Ernest S. Gladney and James W. Owens. Determination of arsenic, tungsten, and antimony in natural waters by neutron activation and inorganic ion exchange. A critical evaluation of the determination of uranium by inductively coupled plasma optical emission spectrometry was performed using factorial designs (2 3) involving the factors: acid concentration, radio frequency power and nebulizer gas flow of the experiments in this study were made for five emission lines, in the presence of nitric and hydrochloric acid.

In the past, the determination of total element concentrations was considered to be enough for clinical and environmental analyses.

However, the knowledge of chemical speciation has primary importance because the toxicity, mobility, bioavailability and bioaccumulation of elements largely depend on their chemical species (Ebdon et al. Determination of Bismuth and Tellurium in Tissues by Atomic Absorption Spectrophotometry.

American Industrial Hygiene Association Journal27 (3), DOI: / Richard E. Kinser. Determination of Bismuth and Tellurium in Body Tissues of Animals by Atomic Absorption Spectrophotometry. Tellurium Determination of Tellurium by Precipitation with Hydrazine Sulphate Determination of Tellurium by Reduction with Sulfurous Acid Determination of Tellurium by Reduction with Sodium Hypophosphite The Separation of Te References Group III Cations Aluminum Determination in the Form of Aluminum.

A rapid procedure for the determination of the tellurium content of organotellurium compounds. Journal of Organometallic Chemistry(1), DOI: /SX(00) Mary R.

Masson. Determination of selenium and tellurium in organic. G.A. Cutter, in Encyclopedia of Ocean Sciences (Second Edition), Tellurium. Tellurium is a group VIB metalloid like selenium, but its lower position in the periodic table suggests that it has considerably more metallic character than selenium.

Thus, Te(VI) exists as Te(OH) 6 but, unlike Se(VI), Te(IV) is the stable form as Te(OH) are few data for this element in the ocean, and.The limit of determination is percent tellurium, which is equivalent to milligram of tellurium when using a gram sample.

The spectrophotometric method is particularly applicable to low-tenor materials containing from 0,5 to 50 parts per million of tellurium. Up to 10 gram samples are required for making accurate determinations in.Patai's Chemistry of Functional Groups is one of chemistry's landmark book series in organic chemistry.

An indispensible resource for the organic chemist, this is the most comprehensive reference available in functional group chemistry. Detection and determination of organic selenium and tellurium compounds (Pages: ) Kurt J.

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