Biogeochemical changes in diphenylarsinic acid in Japanese agricultural soils

摘要：

We investigated the biogeochemical changes in diphenylarsinic acid (DPAA) in two types of agricultural soils under flooded or upland conditions in an incubation study. The results were as follows: 1) DPAA in the flooded soil can change into methyldiphenylarsine oxide (MDPAO) by methylation. 2) Under flooded conditions, part of DPAA can change into phenylarsonic acid (PAA) which is subsequently changed through methylphenylarsinic acid (MPAA) to dimethylphenylarsine oxide (DMPAO). 3) The concentration of DPAA applied to these two soils clearly decreased after 12 weeks incubation, indicating that most of DPAA might be aged in the soil or degassed to the air during the incubation period.

关键词： agricultural soil diphenylarsinic acid flooded conditions incubation upland conditions

作者: Yuji Maejima Tomohito Arao Koji Baba

作者单位: Soil Environment Division, National Institute for Agro-Environmental Sciences (NIAES), 3-1-3 Kannond Organochemicals Division, National Institute for Agro-Environmental Sciences (NIAES), 3-1-3 Kannonda

会议类型: 国际会议

会议名称: 第九届痕量元素生物地球化学国际会议(9th International Conference on the Biogeochemistry of Trace Elements)

会议地点: 北京

会议语种:英文

页码: 850-851

在线出版日期: 2007-07-15（万方平台首次上网日期，不代表论文的发表时间）