橙黄G褪色分光光度法测定痕量铬(Ⅵ)  

Determination of Trace Chromium(Ⅳ)Based on Discoloration of Orange G with Spectrophotometry

作　　者：张爱梅[1] 崔慧[1] 王术皓[1] 吕春华 杨秋海 

机构地区：[1]聊城师范学院化学系,聊城252059 [2]莘县实验中学 [3]聊城七中

出　　处：《聊城师院学报（自然科学版）》2000年第3期48-50,共3页Journal of Liaocheng Teachers University(Natural Science Edition)

摘　　要：室温下，硫酸介质中，利用铬（ Ⅳ）氧化橙黄 Ｇ使其褪色，建立了测定痕量铬（Ⅳ）的新方法．并讨论了反应机理．线性范围为０～３ ｍｇ／Ｌ，检出限为０．０４ｍｇ／Ｌ．A new spectrophotometric method for the determination of trace chromium (VI ) is described. It is based on the discoloring of orange G oxidized by chromium(VI )in sulfuric acid medium under room temperatrue. The reaction mechanism is also discussed. The liner range is 0-3 mg/L. The detection licit is. 0. 04mg/L.

关 键 词：橙黄G 铬 分光光度法 

分 类 号：O614.611[理学—无机化学] O657.3[理学—化学]