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- W4230291241 abstract "Inorganic arsenic (arsenite and arsenate), disodium methanearsonate (DSMA) and dimethylarsinic acid (DMAA) were extracted into benzene from the hydrochloric acid medium with or without potassium, iodide. The extractability was estimated by determining the arsenic, after transferring it from benzene into water by back-extraction, with an atomic absorption spectrophotometer equipped with a graphite furnace atomizer. Inorganic As(III) was the only species extracted with benzene alone although the extraction was not complete. Above (56) M in hydrochloric acid containing potassium iodide (0.5 M), essentially 100 % of both As(III) and As(V) were extracted. Ion-exchange chromatography, thin-layer chromatography and molybdenum blue formation reac tion revealed that the greater part of As(III) and As(V) were extracted as As(V) in the presence of potassium iodide. Essentially 100 % of DSMA was extracted from the hydrochloric acid {(39.6) M} containing potassium iodide (0.5 M). A maximum extraction of DMAA was achieved from the (78) M hydrochloric acid medium containing potassium iodide (0.1 M or 0.5 M). The percent extraction, however, did not exceed ca. 90 %. Although the distribution ratio of DMAA between the benzene and aqueous (7 M hydrochloric acid, 0.5 M potassium iodide) phases was about 10, those of other three arsenicals were of the order of nearly 102. This procedure was useful for separation and purification of water-soluble arsenic compounds present in the extract of a brown seaweed, Hizikia fusiforme." @default.
- W4230291241 created "2022-05-11" @default.
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- W4230291241 date "1980-01-01" @default.
- W4230291241 modified "2023-10-06" @default.
- W4230291241 title "Extraction of inorganic and methylated arsenic with benzene" @default.
- W4230291241 doi "https://doi.org/10.2116/bunsekikagaku.29.8_563" @default.
- W4230291241 hasPublicationYear "1980" @default.
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