Speciation distribution characters of heavy metals in waste printed circuit boards

The environmental availability of heavy metals from the waste printed circuit boards (PCBs) were studied through BCR's three-stage extraction procedures from EU and Tessier's five sequential extraction procedures. The results show that the heavy metal extraction rates with BCR's proce...

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Bibliographic Details
Published inHuanjing kexue Vol. 30; no. 9; p. 2798
Main Authors Zhao, Guo-hua, Luo, Xing-zhang, Huang, Zhuo-hui, Feng, Jing-wei, Zheng, Zheng, Gao, Shun-zhi, Nie, Er, Ni, Li-xiao
Format Journal Article
LanguageChinese
Published China 01.09.2009
Subjects
China
Electrical Equipment and Supplies
Electronics
Environmental Monitoring
Environmental Pollutants - analysis
Hazardous Substances - analysis
Metals, Heavy - analysis
Refuse Disposal
China
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Summary:The environmental availability of heavy metals from the waste printed circuit boards (PCBs) were studied through BCR's three-stage extraction procedures from EU and Tessier's five sequential extraction procedures. The results show that the heavy metal extraction rates with BCR's procedures are higher than that with Tessier's from waste PCBs. There are significant differences in fraction distributions of heavy metals in PCBs. The speciation of Ni in the PCBs exists mainly in residual forms and has little effect on the environment. The percentage of acidic extractable forms with BCR's method and the total amount of exchangeable and carbonate which bound for Tessier's procedure of Pb and Zn are high, in the South China, the two metals are more easily released by acid rain. Acidic extractable forms of Cu is the main speciation in PCBs with BCR's extraction procedures, while the percentage of Fe-Mn oxides- bound of Cu is the highest with Tessier's procedures, though the result is not agree consistent, due to the h
ISSN:0250-3301