摘要
本文提出用新试剂 2 -( 5 -硝基 -2 -吡啶偶氮 ) -5 -二甲氨基苯甲酸分光光度法测定瓷餐具钴的溶出量 ,它与钴形成的配合物表现摩尔吸光系数为 1 .31× 1 0 5L·mol- 1·cm- 1。该试剂不但灵敏度高 ,选择性也很好。可以不经分离直接测定瓷餐具溶出的微量钴 ,结果满意。
In this paper,spectrophotometric determinatjion of micro amount cobalt using a new chromogenic reagent 2-(5-mitro-2-Pyridylazo)-5-dimethylaminoberzoic acid (5-NO 2-PAMB) is investigated.The apparent molar absorptivity of the coordination complex is 1.31×10 5 L·mol -1 ·cm -1 at 650nm.The method was found to have high sensitivity and good selectivity.The method can be applied directly to the determination of cobalt solved from porcelain without separation.The results were satisfactory.
出处
《中国陶瓷》
CAS
CSCD
2002年第1期53-54,35,共3页
China Ceramics
