淀粉-碘化镉法测定水中聚丙烯酰胺含量探讨  

Determination of Polyacrylamide Applyed with Starch-Cadmium Iodide Method for Low Oil Pollnted water

作　　者：王文东[1] 张小妮[1] 杨钊[1] 王晓昌[1] 丁真真 李荧 

机构地区：[1]西安建筑科技大学环境与市政工程学院,陕西西安710055 [2]西安市环境保护科学研究院,陕西西安710002 [3]浙江清华长三角研究院生态环境研究所,浙江嘉兴314006 [4]浙江双益环保科技发展有限公司,浙江嘉兴314006

出　　处：《净水技术》2010年第5期33-35,66,共4页Water Purification Technology

基　　金：国家自然科学基金项目(50838005);陕西省教育厅重点实验室建设项目(09JS029);浙江省重大科技成果转化项目(2006C16046);浙江省省长基金项目(2007C18002)

摘　　要：现有的淀粉一碘化镉法是针对石油类、表面活性剂和无机盐含量较高的采油废水建立的。该文依据天然水的水质特点对淀粉-碘化镉法的测定范围、药剂存放条件及显色时间等因素进行了优化。结果表明，该法的检出限为0．14mg／L，线性范围为0．2—40mg／L，精确度和灵敏度均满足定量要求。对活性污泥流化床混凝出水，由于产生酰胺基代谢产物，测定精度较差。Existing starch - cadmium iodide method was established for polyacrylamide determination in oilfield wastewater with high contents of oil, suffaetant and inorganic salt. Basing on the water quality of natural water, the determination range, reagent storage condition and color time of starch-cadmium iodide method were optimized. Results show that the detection limit of the revised method is 0.14 mg/L, linear range is 0.2-40 mg/L, and the accuracy and sensitivity are both high. Since the production of amide in activated sludge fluidized hed operation, the method shows less precision to its coagulation effluent water.

关 键 词：聚丙烯酰胺 淀粉-碘化镉 混凝 检出限 灵敏度 

分 类 号：X502[环境科学与工程—环境工程]