수산화 세륨에 의한 해수 중의 미량 금속성분 예비농출 및 분석에 관한 연구

Abstract

해수나 강물속에 포함되어 있는 미량의 금속성분들(Pb, Fe, Cd, Cu, Mn, Ni, Zn)을 수산화세륨으로 공침시켜 예비농축하는 분석방법을 연구하였다. 분리된 침전은 소량의 황산에 용해시킨 다음에 각 성분들을 원자흡수분광기에 의하여 분석하였다. 분석할 용액은 세륨함량을 400㎖의 시료용액당 40㎎으로 하고 pH를 9.5로 조절하여 침전시켰을 때의 분석결과가 가장 좋았다. 또한 이 방법을 이용하여 강물 및 해수시료에 포함된 몇가지 금속성분들을 분석하고 그 결과를 검토해 보았다.

A new pre-concentration process for the determination of trace elements, Pb, Fe, Cu, Cd, Mn, Ni and Zn contained in water and seawater has been developed by using the co-precipitant, cerium hydroxide.

The concentrated metal components in the precipitate were determined by atomic absorption spectrometer. The best condition of the process was at pH 9.5 of the solution and the addition of 40㎎ Ce/400㎖, co-precipitant to the sample solution to be determined. The precipitate was separated from solution by centrifugation method.

Several kinds of metal elements contained in a few samples of river water and seawater have been tried to determine by the method developed here.

A new pre-concentration process for the determination of trace elements, Pb, Fe, Cu, Cd, Mn, Ni and Zn contained in water and seawater has been developed by using the co-precipitant, cerium hydroxide.

The concentrated metal components in the precipitate were determined by atomic absorption spectrometer. The best condition of the process was at pH 9.5 of the solution and the addition of 40㎎ Ce/400㎖, co-precipitant to the sample solution to be determined. The precipitate was separated from solution by centrifugation method.

Several kinds of metal elements contained in a few samples of river water and seawater have been tried to determine by the method developed here.