摘要
铬(Ⅵ)在邻二氮菲-亚硝酸钠体系中(pH=9.3),有一灵敏的极谱催化波,检测下限为0.05ppb,线性范围为0.05-2.5ppb,铬(Ⅲ)氧化为铬(Ⅵ)后,可测得总铬量.
Cr(VI) has a rather sensitive polarographic catalytic wave in the System of 1,10-phenanthiraline-sodium nitrite solution at pH9.3. After Cr(III) is oxidated to Cr(VI),the total .amount of Cr is determined. The detection limit is 0.05ppb. There is a linear relationship in the range of 0.05-2.5ppb Cr. It is accurate to be used for quantitative determination.
出处
《环境化学》
CAS
CSCD
北大核心
1990年第3期84-88,共5页
Environmental Chemistry
