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 SM ISO690:2012BARANOV, Serghei Alexei, REDWING, J., BOGDEVICH, Oleg, CINIC, Boris, IZMAILOV, Denis. Method of study gallium and arsenic losses in technology of gallium arsenate obtained from wastes. In: Moldavian Journal of the Physical Sciences, 2005, nr. 3(4), pp. 357-362. ISSN 1810-648X. |
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| Moldavian Journal of the Physical Sciences | ||||||
| Numărul 3(4) / 2005 / ISSN 1810-648X /ISSNe 2537-6365 | ||||||
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| Pag. 357-362 | ||||||
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Having the goal to recover gallium (Ga) and arsenic (As) from technological wastes
derived from the process of growing epitaxial gallium arsenide structures, it is proposed to
extract gallium arsenate (GaAsO4) by precipitation and filtration of the sediment. In this paper
it is proposed to measure the concentrations of Ga and As by means of the atomic absorption
spectrometer AAnalyst 800 directly in the filtrate solution. We compare the results obtained
by two methods of elemental Ga and As atomization: flame and thermal atomization. The
values of Ga and As concentrations in filtrate are function of pH for solutions containing 1-
680 mg/1 of Ga and 55-880 mg/1 of As. The developed method can be used to study and
further optimize the technological process. |
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