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研究了硒一次甲基兰─草酸体系在悬汞电极上的吸附伏安特性．硒络合物在－０．６Ｖ（ＶＳ．ＳＣＥ）产生一灵敏吸附还原峰．峰高与硒浓度在６．２５×１０－９～７．０×１０－７ｍｏｌ／Ｌ范围内成线性关系．用此法，可不经分离，直接测定饮水及镍粉中痕量硒的含量．
The adsorption voltammetry of selenium methylidene-oxalate system on the hanging mercury electrode was studied. Selenium complex at -0.6V (VS.SCE) produce a sensitive adsorption reduction peak. The peak height and selenium concentration ranged from 6.25 × 10-9 to 7.0 × 10-7mol / L. With this method, the content of trace selenium in drinking water and nickel powder can be measured directly without separation.