2002•Analytical LaboratoryRequires access

Synthesis of a new reagent ethoxybenzothiazolyldiazoaminoazobenzene and its colour reaction with mercury

Yun‐Fa Zheng, Chuan‐Ming Jin

Abstract

A new triazene reagent ethoxybenzothiazolyldiazoaminoazobenzene(EtOBTDAA) was synthesized and the color reaction of EtOBTDAA with mercury(Ⅱ) was studied. Results showed that a 1∶1 red complex of EtOBTDAA and Hg(Ⅱ) was formed in buffer solutions of Na_2B_4O_7-NaOH at pH 10.4～11.0 in the presence of Triton X-100. The molar absorptivity of the complex is 1.16×10 5 L·mol -1 ·cm -1 . The proposed method was applied to determination of mercury in waste water samples.

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Key concepts: Chemistry, Reagent, Mercury (programming language), Molar absorptivity, Color reaction, Triazene, Inorganic chemistry, Nuclear chemistry