Measurement of Four Trace Elements in Natural Rainfall and Runoff

Bi Guiying

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Measurement of Four Trace Elements in Natural Rainfall and Runoff

- Measurement of Four Trace Elements in Natural Rainfall and Runoff
- Bulletin of Soiland Water Conservation Vol. 17, Issue 2, Pages: 31-34(1998)
- 作者机构：
  
  中国科学院水土保持研究所
- 作者简介：
- 基金信息：
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- Published：1998
- 稿件说明：
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Bi Guiying. Measurement of Four Trace Elements in Natural Rainfall and Runoff[J]. Bulletin of Soiland Water Conservation, 1998, 17(2): 31-34.
DOI：

Bi Guiying. Measurement of Four Trace Elements in Natural Rainfall and Runoff[J]. Bulletin of Soiland Water Conservation, 1998, 17(2): 31-34. DOI：

摘要

水样中微量元素的测定是研究元素迁移的一项基础工作。通常用火焰原子吸收法测定水样中微量元素，当样品中元素含量较低时需用甲基异丁基甲酮（MIBK）萃取后测定。该文对这一方法进行了改进，采用浓缩水样以提高待测元素的含量，并加入二氯化钙作为释放剂来消除硅的干扰。测定结果表明：改进方法操作简单，回收率和精度均令人满意。

Abstract

The measurement of trace elements in water samples is a fundamental laboratory work for element transport in both soil and runoff.It is usually done by using a flame atomic absor ption spectrophotometer.Howerer

an extraction procedure by adding methyl butyl ketone(MIBK

for short) is necessary when the element concentration in the samples is very low.An improvement on the method is made by using concentrated water sample in order to increase the concentration of trace elements in the samples.The interfering problem of silicone on the concentration is solved by adding calcium chloride.The results show that the improved method is simple

and both the recovery rate of the samples and the accuracy of the method are satisfactory.

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