Zhao S, Xia X, Kong X, Liu T
Department of Polymer Chemical Engineering, Shenyang Institute of Chemical Technology, Shenyang, Liaoning 110021, China.
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。
