International Journal of Environmental & Analytical Chemistry · 1982 · 13 citations · 14 references
AgricultureEnvironmental SciencesSoil SciencesSoil BiogeochemistrySoil ChemistrySoil ScienceHerbicide Analytical ChemistrySoil Contaminant ChemistrySoil Contaminant FateSoil ContaminationSoil GeochemistrySoil PollutionArsenic BiogeochemistryArsenic GeochemistryArsenic RemediationHerbicide Fate In SoilsMetal Speciation In SoilMethylated Arsenic CompoundsSoil Contaminant AnalysisSoil Elemental Analysis
Abstract The analysis and speciation of arsenic in two South Texas soil samples treated with arsenical herbicides was carried out utilizing hydride generation-dc helium emission spectrometry. Extractions with Bray P-1 solution (0.03 M NH4FF + 0.025 M HC1) showed that the extractability of arsenic decreased in the order dmaa (dimethylarsinic acid or its salts) < maa (methanearsonic acid or its salts) < arsenate. It was found that maa underwent degradative changes such as oxidation of the C-As bond or methylation most easily. In general the herbicides were more strongly sorbed on clay than on loam.
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Determination of arsenic species in natural waters
Meinrat O. Andreae · Analytical Chemistry · 1977 · 389 citations
Lee Jacobs, J. K. Syers, D. R. Keeney · Soil Science Society of America Journal · 1970 · 163 citations