摘要
在ｐＨ４．５０的酸性介质中，亚铜试剂与Ｃｕ（Ⅰ）生成紫色配合物，与强酸性阳离子交换树脂交换吸附，可进行树脂相分光光度法测定痕量Ｃｕ（Ⅰ）．最大吸收波长λｍａｘ为５２０ｎｍ；表观摩尔吸光系数ε为６．８×１０４Ｌ·ｍｏｌ－１·ｃｍ－１；Ｃｕ（Ⅰ）在０～１．４８ｍｇ·Ｌ－１范围内符合Ｂｅｅｒ定律．用此法测定天然水中痕量Ｃｕ（Ⅰ）。
A resin phase spectrophotometric method for the determination of trace Cu(Ⅰ) based on formation of the purprish red complex with cuproine under the acid condition of pH4.50 is described.The maximum absorption wavelength is at 520nm.The apparent molar absorption coefficient ε is 6.8[KG-1mm]×10 4L·mol -1 ·cm -1 .The Beers law is obeyed for the concentration of Cu(Ⅰ) in the range of0～1.48mg·L -1 .The proposed method has been applied to the determination of trace Cu(Ⅰ) in natural water with satisfactory results.
出处
《内蒙古师范大学学报（自然科学汉文版）》
CAS
1999年第2期127-130,共4页
Journal of Inner Mongolia Normal University(Natural Science Edition)
基金
内蒙古自然科学基金
