陰イオン交換樹脂による地下水中の硫酸根の分離濃縮

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概要

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• Gravimetric method, as a most reliable means, is used at present for the determination of sulfate radical in underground waters. However, this method has a defect of requiring too much time and labor for its concentration and separation, and this is an obstacle for handling of large numbers of sample at a time. In order to facilitate the above procedure, a new method of using anion exchanger has been investigated. The procedure is carried out as follows : The sample water is made weak acid with HCl, passed through a column of Amberlite IR-4B (Cl-type) for adsorption of the sulfate radical, by which the sulfate radical is separated from Fe, Al, SiO<SUB>2</SUB> and larger parts of H<SUB>3</SUB>PO<SUB>4</SUB>, the sulfate radical is liberated by aqueous ammonia and it is estimated by gravimetric method as BaSO<SUB>4</SUB>. While it required 2 days for concentration and removing of disturbing ions by the usual method, this method can be finished in 3 hours.

• 社団法人 日本分析化学会の論文

著者

• 水谷 義彦

  名古屋大学理学部地球科学教室

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• 陰イオン交換樹脂による地下水中の硫酸根の分離濃縮

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