Comprehensive evaluation of dioxins and dioxin-like compounds in surface soils and river sediments from e-waste-processing sites in a village in northern Vietnam:Heading towards the environmentally sound management of e-waste  

作　　者：Go Suzuki Masayuki Someya Hidenori Matsukami Nguyen Minh Tue Natsuyo Uchida Le Huu Tuyen Pham Hung Viet Shin Takahashi Shinsuke Tanabe Abraham Brouwer Hidetaka Takigami 

机构地区：[1]Center for Material Cycles and Waste Management Research,National Institute for Environmental Studies(NIES),Tsukuba 305-8506,Japan [2]Tokyo Metropolitan Research Institute for Environmental Protection,1-7-5 Shinsuna Koto,Tokyo 136-0075,Japan [3]Graduate School of Frontier Sciences,The University of Tokyo,5-1-5 Kashiwanoha,Kashiwa 277-8563,Japan [4]Center for Marine Environmental Studies,Ehime University,Matsuyama 790-8577,Japan [5]Research Centre for Environmental Technology and Sustainable Development(CETASD),VNU Hanoi University of Science,334 Nguyen Trai,Hanoi,Viet Nam [6]Center of Advanced Technology for the Environment,Faculty of Agriculture,Ehime University,3-5-7 Tarumi,Matsuyama 790-8566,Japan [7]BioDetection Systems,1098 XH Amsterdam,The Netherlands

出　　处：《Emerging Contaminants》2016年第2期98-108,共11页新兴污染物（英文）

基　　金：supported by the Society for the Promotion of Science and Environment Research and Technology Development Fund(no.3K133010 and no.3K153001)of the Ministry of the Environment,Japan;supported by the Ministry of Education,Culture,Sports,Science and Technology,Japan(MEXT)to a project on Center of Excellence for Cooperative and Collaborative Studies e Leading Academia in Marine and Environmental Research(LaMer).

摘　　要：The management of electronic waste(e-waste),which can be a source of both useful materials and toxic substances,depending on the processing method,is important for promoting material cycling.In this study,we used the dioxin-responsive chemical-activated luciferase gene expression(DR-CALUX)assay combined with gas chromatographyehigh-resolution mass spectrometry to evaluate the levels of dioxin-like compounds in surface soils and river sediments collected in and around an e-waste-processing village in northern Vietnam.The WHO-TEQs(Toxic equivalents)of polychlorinated dibenzo-p-dioxins and dibenzofurans(PCDD/Fs),coplanar polychlorinated biphenyls(Co-PCBs),and polybrominated dibenzo-pdioxins and dibenzofurans(PBDD/Fs)in soils collected in January 2012 ranged from 0.29 to 310 pg/g(median 2.9 pg/g,n=32),and the WHO-TEQs in sediments ranged from 0.96 to 58 pg/g(median 4.4 pg/g,n=8).Dioxin-like activities(CALUX-TEQs[2,3,7,8-TCDD equivalent])in soils collected in January 2012,2013,and 2014 ranged from<30 to 4300 pg/g(median<30 pg/g,n=96),and the activities in sediments ranged from<30 to 4000 pg/g(median 33 pg/g,n=24).Dioxin-like compounds accumulated in samples collected around e-waste-processing areas such as open-burning sites and e-waste-processing workshops,and the compounds may be transported from their sources to surrounding areas over the course of several years.Some of the CALUX-TEQs,but not WHO-TEQs,values were higher than the maximum acceptable WHO-TEQs promulgated by various authorities,indicating that all dioxin-like compounds should be evaluated in samples collected from e-waste-processing areas.Our findings suggest that open burning and open storage of e-waste should be prohibited and that wastewater treatment should be implemented at each workshop to reduce contamination by dioxin-like compounds from e-waste.

关 键 词：DIOXIN Brominated dioxin E-WASTE Open burning CALUX 

分 类 号：S15[农业科学—土壤学]