Variation in arsenic concentration relative to ammonium nitrogen and oxidation reduction potential in surface and groundwater

Kiyoshi Kurosawa, Kazuhiko Egashira, Masakazu Tani, M. Jahiruddin, Abu Zofar M. Moslehuddin, M. Zulfikar Rahman

研究成果: ジャーナルへの寄稿学術誌査読

13 被引用数 (Scopus)

抄録

Arsenic (As), ammonium-nitrogen (N), nitrate-N concentrations, and oxidation-reduction potential (ORP) in the water samples from the river, pond, dug well, and shallow and deep tube wells (TW) were investigated in a farming village of southwestern Bangladesh. Concentrations of As and ammonium-N were the highest, whereas ORP was the lowest in the shallow TW water among the water sources. The ammonium-N concentration correlated positively with the As concentration and negatively with ORP for all samples, irrespective of the water sources. A rise in the ammonium-N concentration was hypothesized to enhance microbial activity, which in turn would lower ORP, and then As was released from sediments to the surrounding water in a reducing condition. The source of ammonium-N in the shallow TW water was identified as N fertilizer, based on the δ15N analysis. Thus, the influence of N fertilizer application on As contamination in groundwater was suggested.

本文言語英語
ページ(範囲)1467-1475
ページ数9
ジャーナルCommunications in Soil Science and Plant Analysis
39
9-10
DOI
出版ステータス出版済み - 5月 2008

!!!All Science Journal Classification (ASJC) codes

  • 農業および作物学
  • 土壌科学

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