摘要
用金属导线Ag等材料做成的阴极线束,可以在恒电位下定量电富集并通过加热热离解定量释放出Hg.此法具有法拉第电解定律的高度准确性和过渡金属汞齐化的高度灵敏性,可用来测定天然水中浓度低达1ng/L以下的超微量汞,水样不需预处理,不需外加各种试剂,而热离解Hg蒸气的测定,则可用普通的测汞仪.
Using a bunch of Ag-wire as cathode,trace amount of Hg in natural waters can be quantitatively collected through electrolysis under a constant potential without tedious pre-treatment and use of other reagents, and then it can be quantitatively released through pyrolysis and determined with a common Hg-analyzer. With the high accuracy of Faraday's law of electrolysis and the high sensitivity of amalgamation of Some transition metals, the method can be used for determination of Hg content less than 1ng/1.
出处
《环境化学》
CAS
CSCD
北大核心
1990年第2期65-68,共4页
Environmental Chemistry
