中文摘要：

采集浙江台州电子垃圾拆解区的废弃印刷电路板,研究其粉体在不同溶剂（甲苯、乙醇、三氯乙烯水溶液和处理前后的垃圾渗滤液）中多溴联苯醚（PBDEs）的溶出规律.同时,采用气相色谱-负化学离子源-质谱联用仪（GC-NCI-MS）检测了上述溶出剂中8种PBDEs同系物的浓度.实验结果表明,电路板粉体（粒径180～380μm）在甲苯、乙醇和三氯乙烯（TCE）水溶液中达到溶出平衡时（甲苯48h,乙醇96h,TCE水溶液240h）,PBDEs同系物溶出的总量（∑8PBDEs）分别为2320.06、1946.17和79.38mg·kg-1,处理前后垃圾渗滤液中PBDEs在20d达到溶出平衡,溶出总量分别为1042.12μg·kg-1和23.63μg·kg-1,均以BDE99和BDE47为主;电路板中PBDEs的溶出受粉体粒径影响较大,粒径越小,PBDEs越容易溶出.

英文摘要：

The leaching characteristics of PBDEs from the particles of crushed printed circuit boards collected from an E-waste dismantling area in Taizhou,Zhejiang were investigated in various solvents including toluene,ethanol,trichloroethylene solution and actual landfill leachate.Eight PBDEs congeners were identified and determined by GC-NCI-MS.The results showed that after reaching the equilibrium（toluene：48 h,ethanol：96 h,TCE：240 h）,the concentrations of the ∑8PBDEs leached from particles of crushed printed circuit boards（diameter ranging from 180 μm to 380 μm） were 2320.06 mg · kg-1,1946.17 mg · kg-1 and 79.38 mg · kg-1 in toluene,ethanol and trichloroethylene solution,respectively.With the equilibrium reached after 30 days,the concentrations of the ∑8PBDEs were 1042.12 μg · kg-1 and 23.63 μg · kg-1 in untreated and treated actual landfill leachate,respectively,with the predominated congeners by BDE99 and BDE47.The particle size had significant effect on PBDEs leaching.The smaller the particle diameter was,the easier for the PBDEs to be leached out.