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Atomic absorption spectrometry of tellurium with electrothermal atomization in a molybdenum microtube

1979; Elsevier BV; Volume: 110; Issue: 1 Linguagem: Inglês

10.1016/s0003-2670(01)83527-3

1873-4324

Kiyohisa Ohta, Masami Suzuki,

Catalysis and Oxidation Reactions

Hydrogen, added to argon purge gas, is necessary to protect the molybdenum microtube atomizer from oxidation, but it increases the atomization temperature and decreases the maximum absorbance of tellurium. A mixture of thiourea and copper removes the interfering effects of diverse elements and counteracts the effect of hydrogen. Tellurium (20–200 ppm) in copper can be determined after extraction as a chloride complex.