镍与新型显色剂苯并噻唑基重氮氨基偶氮苯的高灵敏度显色反应及其应用
Highly sensitive colour-reaction of nickel with a new chromogenic reagent benzothiaxolyldiazoaminoazobenzene and its application.
作者信息
Zhao S, Xia X, Kong X, Liu T
机构信息
Department of Polymer Chemical Engineering, Shenyang Institute of Chemical Technology, Shenyang, Liaoning 110021, China.
出版信息
Talanta. 1997 Dec 12;45(1):13-7. doi: 10.1016/s0039-9140(97)00030-1.
The synthesis of benzothiaxolyldiazoaminoazobenzene (BTDAB) is described, and a simple, rapid and sensitive procedure for spectrophotometric determination of nickel has been developed. At pH 9.4, in the presence of emulsifier p-octylpolyethyleneglycol phenylether (OP), the reagent reacts with nickel to form a red 1:3 (metal:ligand) complex. The nickel-BTDAB complex exhibit an adsorption maximum at 550 nm with an apparent molar absorptivity of 1.96 x 10(5) 1 mol(-1) cm(-1), Beer's law is obeyed for nickel in the range 0-7 mug per 25 ml. The proposed method has been applied to the determination of nickel in aluminum alloy with satisfactory results.
描述了苯并噻唑基重氮氨基偶氮苯（BTDAB）的合成，并建立了一种简单、快速且灵敏的分光光度法测定镍的方法。在pH 9.4时，在乳化剂对辛基聚乙二醇苯基醚（OP）存在下，该试剂与镍反应形成红色的1:3（金属:配体）配合物。镍-BTDAB配合物在550 nm处有最大吸收峰，表观摩尔吸光系数为1.96×10(5) 1 mol(-1) cm(-1)，在每25 ml含0 - 7 μg镍的范围内符合比尔定律。该方法已应用于铝合金中镍的测定，结果令人满意。
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