Determination of Arsenic in Food Samples by Hydride Generation ? Atomic Absorption Spectrometry

Design and evaluation of a continuous flow, integrated nebulizer-hydride generator for flame atomic absorption spectrometry

“…However, the acid concentration has a negligible effect on the analytes sensitivity, within the range studied. Similar results have been reported by Coelho 38 and Moretto 39 and differ from that obtained when a conventional hydride generator (a separate mixing/reaction coil and gas-liquid separator) is used, where a strong dependency is generally obtained between sensitivity and HCl concentration. [40][41][42] Figures 3 and 4 show the effect of reductant and sample solution uptake rates on the As and Se absorption signals respectively.…”

Levels, trends and risk assessment of arsenic pollution in Yangzonghai Lake, Yunnan Province, China

“…It was reported that the arsenic levels in fish were 0.05-1.4 g/g (wet weight) [24] in Lake Michigan, 6.1-11.8 g/g (dry weight) [25] and 2.12-15.2 g/g (dry weight) [26] in Lake Manchar, Pakistan, 0.038-0.309 g/g (dry weight) [27] in River Neretva, Croatia, 0.396-12.58 g/g [28] in southeastern Spain and 0.57-1.15 g/g [29] in five different fish species in Back Bay, Great Slave Lake, near the city of Yellowknife, NT, Canada. It was also reported that the arsenic contents in freshwater fish were respectively 1.6-3.8 and 7.9-22.2 g/g in non-contaminated and contaminated areas of Thailand [30], 0.097-1.32 g/g in Bangladesh [31], and 0.27-10.3 g/g [32] in Brazil. Compared with the above results, the arsenic concentrations in fish and shrimps collected in Yangzonghai after the pollution accident were at a relatively high level.…”

Non-chromatographic speciation of inorganic arsenic by atomic fluorescence spectrometry with flow injection hydride generation with a tetrahydroborate-form anion-exchanger

“…Interferences from selenite can be attributed to competitive reactions in which the selenite competes with the arsenic species for sodium tetrahydroborate to form hydrides. 21,22 When measured under the same condition (0.1 M HCl with 0.5% L-cysteine), the sensitivities for DMA and MMA are 50% and 17% of that for arsenite, respectively. The presence of these methylated compounds would constitute an interference, but as was pointed out in the introduction, 3 these compounds are not found in ground waters.…”