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苯并噻唑偶氮类染料由于其灵敏度高和选择性好,自1962年Дpапкина等人合成6-溴苯并噻唑偶氮萘酚以来,越来越引起人们的注意。我们合成了2-(6＇-溴苯并噻唑-2＇-偶氮)-5-羧基苯酚(2-(6＇-Bromo-2＇-Benzothiazolylazo)-5-Carboxyl Phenol,Br-BTACP),该试剂的合成及应用尚未见报道。本文报告Co~(2+)与Br-BTACP的新显色反应的研究。在乳化荆OP存在下,于pH6.8硼酸-氯化钠-硼砂缓冲溶液中,Co~(2+)与Br-BTACP形成
Benzothiazole azo dyes due to its high sensitivity and good selectivity since 1962, Дpапкина, who synthesized 6 - bromobenzothiazolylazo naphthol has drawn more and more attention. We synthesized 2- (6’-Bromo-2’-Benzothiazolylazo) -5-Carboxyl Phenol, Br-BTACP) The synthesis and application of this reagent have not been reported yet. This article reports the new color reaction of Co 2+ with Br-BTACP. In the presence of emulsified Jing OP, Co ~ (2+) and Br-BTACP were formed in pH6.8 boric acid-sodium chloride-borax buffer solution