【摘要】 合成了ＴＡＤＮｍ，研究了ＴＡＤＮｍ与Ｎｉ（Ⅱ）的显色反应。在ｐＨ６．６０的缓冲溶液中，０．０２０％ＳＬＳ存在下，Ｎｉ（Ⅱ）与ＴＡＤＮｍ形成１：１的红色络合物，λｍａｘ为５１０ｎｍ，ε为５．０×１０４Ｌ·ｍｏｌ－１·ｃｍ－１，稳定常数为３．８×１０１２。方法用于合金中微量镍的测定，结果满意。更多还原

【Abstract】 The synthesis of 4-(2-thiazolazo)-1,3-naphthal-enediol(TADNm) and the spectrophotometrlc charac-teristics of Ni(11)-TADNm complex are reported In this paper. In a pH 6.60 buffer solution containing 0.020% SLS nickel(Ⅱ) forms a red comPlex with TADNm,the molar absorptivity being 5.0×104L. mol-1· cm-1 at 510nm.In the nickel(Ⅱ) concentra tion range from 0.012 to 2.93μg/mL Beer’s law is obeyed.Theproposed method can be usedforthe determination of mlcroamounts of nickel in alloy samples.更多还原