Tellurium morphological analysis

Tellurium is one of the indispensable semiconductor materials for the development of high-tech industry. It is known as "vitamin of modern industry, national defense and cutting-edge technology". Tellurium has been widely used in solar cells, catalysts, additives for colored glass and ceramics, rubber enhancers and fungicides, as well as potential environmental pollutants. The toxicity is related not only to its total amount, but also to its chemical form.

Tellurium has the following several kinds of oxidation state under different conditions: exist in Te (- Ⅱ) of telluride, frequently - telluride, H2Te and metals, including hydrogen telluride unstable; Tellurium is very stable in Te (0); Tellurite in Te (Ⅳ) and its salts, such as HTeO -, TeO2 -; Tellurite in Te (Ⅵ) (TeO2).In environmental samples, tellurium can form organic compounds through physical, chemical, biological and other actions due to various factors, such as methyl tellurium, dimethyl tellurium, etc., but the content is very low.

The speciation analysis of inorganic tellurium: Te (Ⅳ) and Te (Ⅵ) analysis methods including molecular spectroscopy analysis, electrochemical analysis and atomic spectrum analysis and some detection and so on three types of a variety of methods.

After studying the various nonionic surfactants used in Te (Ⅳ) 2 tungstate 2 sensitization solubilization of butyl rhodamine B, in the presence of polyvinyl alcohol, tellurium and sodium tungstate form tellurium tungsten heteropoly acid, then with butyl rhodamine B (BRB) ion association; The trace tellurium in smoke was determined by spectrophotometer.

Using the oscillographic polarographic method to determine water samples of Te (Ⅳ), have higher sensitivity and accuracy. CUTTER used differential pulse polarography analyzes the Te in the animal tissue (- Ⅱ) and Te (0), detection limit of 2 ng, the Te (- Ⅱ) and Te (0) analysis has great guiding significance.

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