城市污泥氰化物测定方法研究

Study on Determination Method of Cyanide in Municipal Sludge

氰化物作为一种剧毒性物质,对环境和人体存在潜在危害,因此而受到广泛性关注。本研究主要针对城市污水处理厂剩余污泥中的氰化物,对其测定方法展开研究。基于污泥区别于水质及土壤等其他介质的特殊性,本研究采用CJ/T 221—2005城市污水处理厂污泥检验方法中异烟酸-吡唑啉酮分光光度法对城市污泥中的氰化物进行测定,并进行了实验室内质量控制研究。结果表明:该方法适用于测定污泥中的氰化物,且异烟酸-吡唑啉酮法可以通过加强实验室和实验过程的质量控制而得到更加准确、可靠的检测结果,满足相关标准测定要求,并更好地服务于环境保护工作。

As a highly toxic substance,cyanide has been widely concerned for its potential harm to the environment and human body.In this study,the determination method of cyanide in waste sludge of sewage treatment plant was studied.Sludge is different from other media such as water quality and soil,the CJ/T 221—2005 test method of urban sewage treatment plant sludge in the isonicotinic acid-pyrazolone spectrophotometric method for determination of cyanide in sewage sludge,and the study of quality control in the laboratory.The results show that the method is suitable for the determination of cyanide in sludge and the isonicotinic acid-pyrazolone method can strengthen the quality control of laboratory and experimental process and get a more accurate and reliable test results,meet the requirements of related standard determination,and better service to the environmental protection work.