研究论文
庞叔薇,邱光葵,孙景芳.连续化学浸提法测定底泥中不同形态汞的探讨[J].环境科学学报,1981,1(3):234-241
连续化学浸提法测定底泥中不同形态汞的探讨
- SEQUENTIAL CHEMICAL EXTRACTION FOR SPECIATION OF MERCURY IN RIVER SEDIMENTS
- 关键词：
- 基金项目：
- 作者
- 单位
- 庞叔薇
- 中国科学院环境化学研究所
- 邱光葵
- 中国科学院环境化学研究所
- 孙景芳
- 中国科学院环境化学研究所
- 摘要：本文提出用连续化学浸提法将底泥作连续五次抽提,根据不同形态汞的溶解度,将底泥中汞分为水溶性汞、酸溶性汞、碱溶性汞、硝酸溶汞、王水溶汞五个部分。对蓟运河沿岸的天化、茶淀和污水库底泥中汞作上述化学形态分析。用合成样品验证求回收率,认为对底泥中惰性汞的测定较热解法可靠,并发现底泥中腐殖质汞与惰性汞之间有相关关系。
- Abstract：According to mercury species with different solubilities, an analytical procedure involving sequential chemical extraction has been developed for partitioning of mercury species in sediments into five fractions:water-soluble Hg; HCl-soluble Hg; KOH-soluble Hg; nitric acid-soluble Hg and aqua regia-soluble Hg. The separated species are then analyzed by cold atomic fluorescent mercury analyzer.In order to acquire adequate understanding of mercury speciation, experiments were conducted on replicate samples of Ji Yun River sediments. Relation between the humic acids associated or complexed with Hg and the inactive Hg (HgS) was observed.
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