An instrumental analytical technique for speciation of atmospheric mercury
An instrumental analytical technique for speciation of atmospheric mercury
复制标题
大气汞形态的仪器分析技术
DOI：
10.1080/03067318508076405
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发表时间：
1985
影响因子：
2.6
通讯作者：
R. Jackson
中科院分区：
文献类型：
--
作者：
W. Schroeder;R. Jackson
摘要释放到环境中的有毒元素的化学形态分析对于理解其环境行为和最终归宿，以及评估其生态毒性和相关的人类健康风险具有根本的重要性。本文介绍了研究和开发活动，最终形成了一种仪器分析方法，用于确定大气中汞的几种挥发形式：元素汞、氯化汞、氯化甲基汞和二甲基汞。贵金属，银和金，以及许多化学浸渍或未经处理的吸附剂材料（包括几个特殊的色谱支持）进行了评估，以确定其收集效率，释放特性，和选择性，相对于候选汞物种。在这些实验室测试的基础上，最终选择用于顺序收集四种汞物质的材料是用盐酸蒸气处理的Chromosorb W、Tenax GC.
Abstract Chemical speciation of toxic elements released into the environment is of fundamental importance in understanding their environmental behaviour and ultimate fate, as well as in assessing their ecotoxicity and associated human health risks. This paper describes the research and development activities culminating in an instrumental analytical methodology for speciating several volatile forms of mercury in the atmosphere: elemental mercury; mercuric chloride; methylmercuric chloride; and dimethyl mercury. The noble metals, silver and gold, as well as numerous chemically impregnated or untreated sorbent materials (including several special chromatographic supports) were evaluated to determine their collection efficiency, release characteristics, and selectivity, with respect to the candidate mercury species. On the basis of these laboratory tests, the materials ultimately selected for sequential collection of the four mercury species were Chromosorb W treated with hydrochloric acid vapour, Tenax GC, ...