新试剂2－（6－甲基－2－苯并噻唑偶氮）－5－二乙氨基酚分光光度法测定微量镍

Spectrophotometric determination of micro amount of nickel by a new reagent 2-(6methyl-2-benzothiazolylazo)-5-dietkylamino phenol

本文报道用新试剂２－（６－甲基－２－苯并噻唑偶氮）－５－二乙氨基酚（ＭＢＴＡＥ）分光光度法测定微量镍。Ｎｉ：ＭＢＴＡＥ＝１：２，ε＝８．１×１０４Ｌ／ｍｏｌ·ｃｍ，Ｎｉ２＋浓度在０～２２μｇ／２５ｍＬ范围内服从比尔定律。用于金属有机化合物中微量镍的测定，结果与理论值相符。

This paper reports the spectrophotometric determination of mircoaamount of nickel by a new reagent 2-(6-methyl-2-benzothiazolylazo)-5-diethylamino phenol (MBTAE). The apparent molar absorptivity of the complex is 8.1×104L/mol.cm, and the composition is Ni:MBTAE=1:2. Its linear range is 0￣22μg/25mL. The method has been used to determinemicro amount of nickel in organo-metal and the result corresponds with the theoretical value.