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Transformation of diphenylarsinic acid in agricultural soils.
Maejima, Yuji; Arao, Tomohito; Baba, Koji.
Afiliação
  • Maejima Y; National Institute for Agro-Environmental Sciences, 3-1-3 Kannondai, Tsukuba, Ibaraki 305-8604, Japan. ymaeji@niaes.affrc.go.jp
J Environ Qual ; 40(1): 76-82, 2011.
Article em En | MEDLINE | ID: mdl-21488495
We investigated the transformation and fate of diphenylarsinic acid (DPAA) during incubation in two types of soils (Entisol and Andisol) under aerobic and anaerobic conditions. Under anaerobic conditions only, DPAA was transformed into methyldiphenylarsine oxide by methylation. Under both aerobic and anaerobic conditions, DPAA was degraded to phenylarsonic acid by dephenylation, and phenylarsonic acid was subsequently methylated to form methylphenylarsinic acid and dimethylphenylarsine oxide. The degradation of DPAA in the Andisol was less extensive than in the Entisol. In autoclaved soil under anaerobic conditions, DPAA underwent little degradation during the 24-wk incubation. In unautoclaved soils, the concentration of DPAA in soil clearly decreased after 24 wk of incubation, indicating that DPAA degradation was driven by microbial activity.
Assuntos
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Base de dados: MEDLINE Assunto principal: Arsenicais / Solo / Poluentes do Solo / Biodegradação Ambiental Idioma: En Ano de publicação: 2011 Tipo de documento: Article
Buscar no Google
Base de dados: MEDLINE Assunto principal: Arsenicais / Solo / Poluentes do Solo / Biodegradação Ambiental Idioma: En Ano de publicação: 2011 Tipo de documento: Article