硝酸铁分光光度法测定硫氰酸盐的氧化剂干扰去除实验研究

摘要

During monitoring thiocyanate in middle stream water samples from the process of gold industrial wastewater treatment,it is observed that the presence of oxidant materials like hydrogen peroxide and ozone will sabo-tage the determination accuracy.The paper first carried out the research on elimination of hydrogen peroxide and ozone interference in the process of thiocyanate determination by ferric nitrate spectrophotometry,settling the elimination method of oxidant materials.The accuracy of the method was proved by the addition of standard substance.The method could be widely applied in the determination of thiocyanate in wastewater containing oxidants produced in gold indus-try.%在黄金工业废水处理过程中间水样的硫氰酸盐监测中，常常发现过氧化氢、臭氧等氧化性物质的存在会使测定结果的准确度低。该文分别进行了硝酸铁分光光度法测定硫氰酸盐中过氧化氢和臭氧干扰去除的实验研究，确定了氧化性物质干扰的去除方法；经加入标准物质验证实验，充分说明了该方法测定结果的准确度。该方法可广泛应用于含有氧化剂的黄金工业废水中硫氰酸盐的测定。