| 电路板蚀刻废液及其回收铜盐产品中PCBs污染特征 |
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| 引用本文： | 王 璞,梁 勇,许世爱,高仁富,李英明,张庆华.电路板蚀刻废液及其回收铜盐产品中PCBs污染特征[J].环境科学研究,2015,28(3):460-465. |
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| 作者姓名： | 王 璞 梁 勇 许世爱 高仁富 李英明 张庆华 |
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| 作者单位： | 1.江汉大学, 光电化学材料与器件省部共建教育部重点实验室, 湖北 武汉 430056 ;中国科学院生态环境研究中心, 环境化学与生态毒理学国家重点实验室, 北京 100085 |
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| 基金项目： | 光电化学材料与器件省部共建教育部重点实验室开放课题基金项目(JDGD-2012-03);国家自然科学基金项目(21107121,21277165) |
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| 摘 要： | POPs(持久性有机污染物)是近年来广受关注的一类环境污染物. 为研究工业过程中POPs的运转迁移,针对电路板蚀刻废液及其回收后生产的铜盐产品中7种指示性PCBs(多氯联苯)及CB-209进行分析. 结果表明,PCBs在碱性废液和微蚀废液中未检出,而在酸性废液中有不同程度检出,ρ(∑8PCBs)在0.41~60.80 ng/L之间,其中ρ(∑7指示性PCBs)在0.24~58.00 ng/L之间. 3种铜盐产品〔CuCl2、Cu2(OH)3Cl和CuSO4〕中,CuSO4中w(∑8PCBs)相对较高,在2.75~284.00 ng/kg之间；而CuCl2中w(∑8PCBs)在6.95~31.50 ng/kg之间；Cu2(OH)3Cl中w(∑8PCBs)在7.31~9.42 ng/kg之间. 污染物指纹特征表明,酸性蚀刻废液及其铜盐产品中的PCBs具有十分相似的分布特征,CB-28是最主要的检出单体,并且w(CB-209)相对较高,表明铜盐产品中的PCBs主要来源于生产原料(酸性蚀刻废液)的携带,而酸性蚀刻废液中污染物来源须待进一步分析研究.
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| 关 键 词： | 多氯联苯 蚀刻废液 铜盐产品 污染物来源 |
Polychlorinated Biphenyls in Spent Etching Solutions and Their Copper Salt Recycling Products |
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| WANG Pu
,
LIANG Yong
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XU Shi'ai
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GAO Renfu
,
LI Yingming
,
ZHANG Qinghua.Polychlorinated Biphenyls in Spent Etching Solutions and Their Copper Salt Recycling Products[J].Research of Environmental Sciences,2015,28(3):460-465. |
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| Authors: | WANG Pu LIANG Yong XU Shi'ai GAO Renfu LI Yingming ZHANG Qinghua |
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| Affiliation: | WANG Pu;LIANG Yong;XU Shi’ai;GAO Renfu;LI Yingming;ZHANG Qinghua;Key Laboratory of Optoelectronic Chemical Materials and Devices of Ministry of Education,Jianghan University;State Key Laboratory of Environmental Chemistry and Ecotoxicology,Research Center for Eco-Environmental Sciences,Chinese Academy of Sciences;School of Medicine,Jianghan University;Shajing Treatment Center of Dongjiang Environmental Co. ,Ltd.; |
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| Abstract: | In order to explore the transport of persistent organic pollutants (POPs) in the industrial process, polychlorinated biphenyls (PCBs), including seven indicator congeners and CB-209, were investigated in the spent etching solutions generated during manufacture of printed circuit boards and its copper salt recycling products. The potential of PCB transport from the spent etching solutions to the copper salts was discussed as well. The samples, including three different spent etching solutions, H2SO4 and three kinds of copper salts, were analyzed by high-resolution gas chromatography/high-resolution mass spectrometry (HRGC/HRMS) using an isotope-dilution method. The results showed that no evident PCBs were detected in the spent alkaline etching solutions and microetch solutions, while various levels of the contaminants were found in the spent acid etching solutions. ρ(∑8PCBs) were in the range of 0.41-60.80 ng/L, where ρ(∑7PCBs) of the indicator congeners ranged from 0.24-58.00 ng/L. Among the copper salts (CuCl2, Cu2(OH)3Cl and CuSO4), relatively higher levels of PCBs were observed in CuSO4 samples, with w(∑8PCBs) of 2.75-284.00 ng/kg, while w(∑8PCBs) in CuCl2 and Cu2(OH)3Cl ranged between 6.95-31.50 ng/kg and 7.31-9.42 ng/kg, respectively. The congener profiles showed a similar distribution pattern of PCBs in the spent acid etching solutions and its copper recycling products, where CB-28 was the predominant congener and followed by CB-209. Since CB-209 was not present in the most common Aroclor mixtures and rarely found in the environment, higher levels of CB-209 combined with the similar profiles of indicator PCBs in both spent acid etching solutions and its copper recycling products suggested that PCBs in the copper salts might be mainly transported from the spent acid etching solutions. It is necessary to further investigate the source in spent acid etching solutions. |
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| Keywords: | polychlorinated biphenyls (PCBs) spent etching solution copper salt pollution source |
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