新试剂1-(6-乙氧基-2-苯并噻唑基)-3-(4-硝基苯)-三氮烯的合成及其与汞的显色反应

Synthesis of a new reagent 1-(6-ethoxyl-2-benzothiazolyl)-3-(4-nitrophenyl)-triazene and its color reaction with mercury

合成了新试剂 1 -(6-乙氧基 -2 -苯并噻唑基 ) -3 -(4 -硝基苯 ) -三氮烯 (Et OBTNPT) ,并研究了它与汞的显色反应。在Triton X-1 0 0存在下 ,p H1 0 .1～ 1 0 .7的 Na2 B4 O7-Na OH缓冲溶液中 ,试剂与汞生成 2∶ 1型桔黄色配合物 ,其表观摩尔吸光系数为 2 .3 7× 1 0 5L· mol-1· cm-1。 Hg2 + 的浓度在 0～ 2

A new triazene reagent 1 (6 ethoxyl 2 benzothiazolyl) 3 (4 nitrophenyl) triazene(EtOBTNPT)has been synthesized and its color reaction with mercury(Ⅱ)has been studied.Results show that the yellow complex(1∶2) formed at pH10.1~10.7 buffer solution of Na 2B 4O 7 NaOH in the presence of Triton X 100.The molar absorptivity is 2.38×10 5L·mol -1 ·cm -1 .