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Synthesis of HSDAA and Photometric Determination of Micro Amounts of Mercury in Waste Water
Author(s): 
Pages: 62-66
Year: Issue:  8
Journal: GUANGDONG TRACE ELEMENTS SCIENCE

Keyword:  2-羟基-4-磺酰氨基苯重氮氨基偶氮苯环境污水测定;
Abstract: 研究了2-羟基-4-磺酰氨基苯重氮氨基偶氮苯( HSDAA)与汞的显色反应.在Triton X-100表面活性剂存在下,Ph 9.5~11.5的N A2b4o7-NaOH缓冲溶液中,该试剂与汞(Ⅱ)生成配合比为3∶1的深红色配合物.配合物的最大吸收峰位于λ=520 nm处,表观摩尔吸光系数1.47×105L·mol-1·cm.Hg2+质量浓度在0~480μg/L范围内符合比耳定律.用拟定方法测定环境污水中的微量汞,结果满意.
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