仙台市における地下水中のヒ素濃度

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書誌事項

タイトル別名
  • Arsenic concentration in groundwaters in Sendai City
  • センダイシ ニ オケル チカスイチュウ ノ ヒソ ノウド

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抄録

Forty groundwater samples, collected in Sendai City, were analyzed for arsenic and some other chemical constituents. The average arsenic concentration is 1.1μg/l for the samples with pH 6-7, and 12 μg/l for those with pH 7-9. Thus the pH may be a major factor leaching of arsenic adsorbed on the sediments. This has been proved by leaching experiment of arsenic-containing iron (III) hydroxide with alkaline solutions. Then a prolonged contact of the groundwater with the sediments will favor the dissolution of arsenic. The groundwaters with high iron load are often rich in arsenic, suggesting that arsenic is bound to iron in the sediments.

収録刊行物

  • 地球化学

    地球化学 13 (1), 1-6, 1979

    一般社団法人日本地球化学会

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