Analysis of PCBs in Five Kinds of Fly Ash Using Microwave-Assisted Extraction
Fly ash collected from municipal solid waste incinerators (MSWIs) is characterized by low concentrations of polychlorinated biphenyls (PCBs). We attempted to determine the concentrations of these compounds in MSWIs by using a novel extraction technique—microwave-assisted extraction (MAE)—to replace the traditional method of soxhlet extraction (SE). Under the optimal experimental conditions established in our previous study, MAE was used to analyze the PCB contents of five kinds of fly ash. To shorten the air-drying time prior to analysis, anhydrous sodium sulfate was added after acid pretreatment to reduce the moisture content of the fly ash samples. Total organic carbon (TOC) content of the fly ash affected the PCB recovery efficiency by MAE but not by SE. MAE recovery efficiency that was related to particle distribution and particle pore volume of the fly ash.
Yi-fei SUN Masaki TAKAOKA Nobuo TAKEDA Tian-le ZHU Wei WANG
School of Chemistry and Environment, Beihang University, Beijing, 100191, China Department of Urban & Environmental Engineering, Kyoto University, Nishikyo-ku, Kyoto 615-8540, Japa Key Laboratory for Solid Waste Management and Environment Safety, Ministry of Education of China, Ts
国际会议
The Fifth International Conference on Waste Management and Technology(第五届固体废物管理与技术国际会议)
北京
英文
500-504
2010-11-01（万方平台首次上网日期，不代表论文的发表时间）