Effects of sterilization treatments on the analysis of TOC in water samples

查看全文 作　　者：Yiming [1]Shi;Lingfeng [2]Xu;Dongqin [3]Gong;Jun [1]Lu

机构地区：[1]College of Environmental Science and Natural Resources, Zhejiang University, Hangzhou 310029, China;[2]Ministry of Education Key Laboratory of Environmental Remediation and Ecological Health, Zhefiang University, Hangzhou 310029, China;[3]Zhejiang Provincial Key Laboratory of Subtropical Soil and Plant Nutrition, Zhefiang University, Hangzhou 310029, China

出　　处：《Journal of Environmental Sciences》索引2010年第22卷第5期,共7页

基　　金：supported by the National Natural Science Foundation of China (No. 40821140540);the National High Technology Research and Development Program (863) of China (No. 2007AA10Z218) 摘　　要：Decomposition experiments conducted with and without microbial processes are commonly used to study the effects of environmental microorganisms on the degradation of organic pollutants.However,the effects of biological pretreatment (sterilization) on organic matter often have a negative impact on such experiments.Based on the principle of water total organic carbon (TOC) analysis,the effects of physical sterilization treatments on determination of TOC and other water quality parameters were investigated.The results revealed that two conventional physical sterilization treatments,autoclaving and 60 Co γ-radiation sterilization,led to the direct decomposition of some organic pollutants,resulting in remarkable errors in the analysis of TOC in water samples.Furthermore,the extent of the errors varied with the intensity and the duration of sterilization treatments.Accordingly,a novel sterilization method for water samples,0.45 μm micro-filtration coupled with ultraviolet radiation (MCUR),was developed in the present study.The results indicated that the MCUR method was capable of exerting a high bactericidal effect on the water sample while significantly decreasing the negative impact on the analysis of TOC and other water quality parameters.Before and after sterilization treatments,the relative errors of TOC determination could be controlled to lower than 3% for water samples with different categories and concentrations of organic pollutants by using MCUR. 关键词：TOC分析水样分析灭菌处理有机污染物消毒作用杀菌处理参数测定微生物降解

相关文献

参考文献（32）
引证文献（3）
耦合文献（75）

参考文献(32)

引证文献(3)

耦合文献(75)

互联网出版许可证新出网证(渝)字10号全国400电话 - 免长途话费

Effects of sterilization treatments on the analysis of TOC in water samples

参考文献(32)

引证文献(3)

耦合文献(75)

用户提示