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Determination of Arsenate, Methanearsonate, and Dimethylarsinate in Water and Sediment Extracts
Author(s) -
Yamamoto M.
Publication year - 1975
Publication title -
soil science society of america journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.836
H-Index - 168
eISSN - 1435-0661
pISSN - 0361-5995
DOI - 10.2136/sssaj1975.03615995003900050022x
Subject(s) - arsenate , sediment , arsine , chromatography , chemistry , environmental chemistry , arsenic , biology , biochemistry , phosphine , catalysis , paleontology , organic chemistry
A method is described for separating and measuring arsenate, methanearsonate, and dimethylarsinate in water and sediment extracts. The arsenicals were separated by differential elution from a column of cation exchange resin; and the separates were subsequently analyzed by the arsine method. Standard arsenical solutions separated well, and 97, 93, and 95% of arsenate, methanearsonate, and dimethylarsinate, respectively, were recovered in the effluents. The method was tested with pond sediments previously treated in the laboratory with known levels of arsenicals. Recovery varied from 80 to 98%.