P. Masscheleyn, R. Delaune, W. H. Patrick
1991
Citations
3
Influential Citations
67
Citations
Journal
Journal of Environmental Quality
Abstract
Based on an investigation of hydride generation responses in solutions of various acidities containing nanogram quantities of arsenite [As(III)], arsenate [As(V)], monomethylarsonic acid (MMAA) and dimethylarsinic acid (DMAA) a sensitive analytical method for the accurate determination of inorganic and organic As species in aqueous solutions was developed. After a pH-selective reduction, the arsenic species were condensed in a U-tube filled with a gas chromatographic packing immersed in liquid N 2 . The species were then separated by slow warming of the trap and measured with an atomic absorption spectrophotometer