【摘要】 应用GC/MS对我国 1 1个城市污泥中的 5种氯苯化合物 (CBs)进行了研究 .结果表明 ,各城市污泥中CBs的总含量 (ΣCBs)在 0 0 1 0— 6 91 7mg·kg- 1之间 ,绝大部分低于 1 0mg·kg- 1,依次是兰州 >北京 >香港大埔 >无锡 >香港元朗 >广州 >佛山>香港沙田 >西安 >珠海 >深圳 .各城市污泥的CBs都是以个别或少数化合物为主 ,显示出不同的分布特征 ,主要是 1 2 4 三氯苯和六氯苯 ,其它化合物含量普遍较低 .各种CBs化合物的最高含量主要分布于兰州污泥和无锡污泥中 .城市污泥中CBs的含量与污水来源、污水处理方式、污泥类型和CBs化合物的理化性质有关 .更多还原

【Abstract】 Five chlorobenzenes(CBs)including 12-dichlorobenzene(12-DCB),13-dichlorobenzene(13-DCB),14-dichlorobenzene(14-DCB),124-trichlorobenzene(124-TCB),and hexachlorobenzene(HxCB)in eleven selected municipal sludges from varied cities of China were determined by GC/MS.Total content of chlorobenzenes(ΣCBs)in all these sludges ranged from 0.010 to 6.917mg·kg -1,decreasing in the order:Lanzhou sludge>Beijing sludge>Dapu sludge>Wuxi sludge>Yuanlang sludge>Guangzhou sludge>Foshan sludge>Shatian sludge>Xi′an sludge>Zhuhai sludge>Shenzhen sludge,with most of them less than 1.0mg·kg -1.CBs with higher molecular weight such as 124-TCB and HxCB were detected in all the sludges,generally less than 0.5mg·kg -1,but no sludge was detected for 13-DCB.Among chlorobenzenes,only one or two of them was predominant,thus exhibiting specific distribution patterns.Those chlorobenzenes with higher concentration were found mainly in Lanzhou sludge and Wuxi sludge.The type and concentration of chlorobenzenes in different municipal sludges were related to the sources of wastewater,wastewater-treating methods,sludge types,physical-chemical properties of chlorobenzene themselves.更多还原