蚀刻废液及其回收后生产的铜盐产品中PCDD/Fs含量水平及分布特征  

Concentrations and Distribution Characteristics of PCDD/Fs in Spent Etching Solution and Its Copper Salt Recycling Products

作　　者：青宪[1] 韩静磊[1] 温炎燊 

机构地区：[1]环境保护部华南环境科学研究所,广州510655 [2]深圳市危险废物处理站有限公司,深圳518000

出　　处：《环境科学》2013年第2期642-646,共5页Environmental Science

摘　　要：通过高分辨气相色谱-高分辨磁质谱联用仪(HRGC-HRMS)测定了蚀刻废液及其回收利用后生产的铜盐产品中17种2,3,7,8取代PCDD/Fs的浓度.结果表明,蚀刻废液中PCDD/Fs浓度范围为0～3 460 pg·L-1,平均值为616 pg·L-1,毒性当量浓度WHO-TEQ范围为0～246 pg·L-1,平均值为42.9 pg·L-1;铜盐产品中PCDD/Fs浓度范围为1.08～24.6 ng·kg-1,平均值为8.83 ng·kg-1,毒性当量浓度WHO-TEQ范围为0.112～0.715 ng·kg-1,平均值为0.338 ng·kg-1.通过净化处理工艺可以除去蚀刻废液中大部分PCDD/Fs.在蚀刻废液生产的各级产品中,工业级产品中PCDD/Fs浓度高于饲料级与电镀级产品.各铜盐产品中PCDD/Fs具有相似的单体分布特征:①PCDFs的百分含量明显高于PCDDs;②除硫酸铜类产品中的2,3,7,8-TCDF外,单体的氯取代数越大,百分比含量越高.Concentrations of 17 PCDD/Fs congeners in spent etching solution and its copper salt recycling products were determined by the high resolution gas chromatography-high resolution mass spectrometry（HRGC-HRMS）.The PCDD/F concentrations and corresponding WHO-TEQ（toxic equivalent quantity） values were in the range of 0-3 460 pg·L-1（mean=616 pg·L-1） and 0-246 pg·L-1（mean=42.9 pg·L-1）,respectively,in the spent etching solution,and 1.08-24.6 ng·kg-1（mean=8.83 ng·kg-1） and 0.112-0.715 ng·kg-1（mean=0.338 ng·kg-1）,respectively,in the copper salt products.The established purification treatment technique could remove most of the PCDD/Fs in the etching solution.Of the copper products,higher PCDD/F concentrations were detected in industrial products than in feed grade and plating grade products.Similar distribution characteristics were found for PCDD/Fs in all copper salt products as the followings： ① PCDFs were more abundant than PCDDs,② high chlorinated congeners were more abundant than low chlorinated congeners,except for 2,3,7,8-TCDF in the copper sulfate products.

关 键 词：蚀刻废液 铜盐产品 二英(PCDD Fs) 毒性当量浓度 含量水平 分布特征 

分 类 号：X703[环境科学与工程—环境工程]