Abstract
To study chromium uptake by Arthrobacter oxydans [Cr(VI)-reducing bacteria isolated from Columbia basalt rocks, USA] the instrumental epithermal neutron activation analysis (ENAA) was applied. It was established that chromate accumulation is dose-dependent and it is most intensive in the interval of Cr(VI) concentrations (10-50 mg/l). At lower concentrations of Cr(VI) (up to 50 mg/l) the most intensive formation of Cr(V) was found using ESR method. Besides, it was established that reduction from Cr(VI) to Cr(V) is a faster process than the uptake of Cr(VI). According to ENAA measurements, in contrast to Cr(VI), Cr(III) is not accumulated in Arthrobacter oxydanscells up to concentrations of 200 mg/l. Using epithermal neutron activation analysis the background levels of 17 major, minor and trace elements were determined in Arthrobacter oxydans.
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Tsibakhashvili, N.Y., Mosulishvili, L.M., Kalabegishvili, T.L. et al. ENAA studies of chromium uptake by Arthrobacter oxydans . Journal of Radioanalytical and Nuclear Chemistry 259, 527–531 (2004). https://doi.org/10.1023/B:JRNC.0000020931.85014.42
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DOI: https://doi.org/10.1023/B:JRNC.0000020931.85014.42