Determination of Copper, Lead, Cadmium and Zinc in Water by Square Wave Polarography with Dithizone-Chloroform Extraction Method

디티존-클로로포름 抽出, 短形波폴라로그래피에 의한 물중의 구리, 납, 카드뮴 및 아연의 定量

  • Su-Chan Moon (Department of Chemistry, College of Libral Arts and Science, Busan National University)
  • 문수찬 (부산대학교 문리과대학 화학과)
  • Published : 1975.12.30


500 ml of a sample water was extracted with 10 ml of 0.01 % dithizone-$CHCl_3$three times. When $CHCl_3$ layer was back extracted with 10 ml of 0.1 N HCl containing mercuric ion, the free metal ions come into aqueous layer. The aqueous layer was added with 2 ml of 2 N KCl and was washed with 10 ㎖ of $CHCl_3$two times in order to remove the trace dithizone, and then was recorded square wave polarogram. The concentration of copper, lead and cadmium can be determined up to 3 ppb and that of zinc up to 14 ppb with an error of 10 %.



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