摘要
In the medium of 0.60 mol/L nitric acid,chromium（Ⅵ）reacts with DBC-arsenazo to produce color-fading reaction.Chromium（Ⅵ） was determined based on this reaction.The aqqarent molar absorptivity of the method is ε520nm=2.31×105L·mol-1·cm-1.Beer’s law is obeyed over the range of 1.0-8.0μg/25mL of chromium（Ⅵ）.The method was applied to the determination of chromium in the soil samples.
In the medium of 0.60 mol/L nitric acid,chromium(Ⅵ)reacts with DBC-arsenazo to produce color-fading reaction.Chromium(Ⅵ) was determined based on this reaction.The aqqarent molar absorptivity of the method is ε_(520nm)=2.31×10~5L·mol^(-1)·cm^(-1).Beer's law is obeyed over the range of 1.0-8.0μg/25mL of chromium(Ⅵ).The method was applied to the determination of chromium in the soil samples.
出处
《化学研究与应用》
CAS
CSCD
北大核心
2004年第4期565-566,共2页
Chemical Research and Application
