Distribution of PBDEs in air particles from an electronic waste recycling site compared with Guangzhou and Hong Kong, South China
Distribution of PBDEs in air particles from an electronic waste recycling site compared with Guangzhou and Hong Kong, South China
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DOI：
10.1016/j.envint.2007.06.007
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发表时间：
2007-11-01
影响因子：
11.8
通讯作者：
Wong, M. H.
中科院分区：
文献类型：
--
作者：
Deng, W. J.;Zheng, J. S.;Wong, M. H.
于2004年8月16日至9月17日，在中国南方的贵屿（一个电子废物回收站）、香港的三个城市站点和广州的两个城市站点同时采集了总悬浮颗粒物（TSP，小于30-60 μ m的颗粒物）和空气动力学直径小于2.5 μ m的颗粒物（PM2.5）的空气样品。对TSP和PM2.5中的22种PBDE同系物（BDE-3、-7、-15、-17、-28、-49、-71、-47、-66、-77、-100、-119、-99、-85、-126、-154、-153、-138、-156、-184、-183、-191）进行了检测。结果表明，在贵屿收集的TSP和PM2.5的总体平均浓度分别为124和62.1 μ g m（-3）。贵屿TSP和PM2.5中22种溴化二苯醚同系物的月浓度总和分别为21.5和16.6纳克·米（-3），其中74.5%和84.3%来自9种同系物（分别为BDE-28、-47、-66、-100、-99、-154、-153、-183和-191）。这一模式与香港荃湾遗址相似。广州的两个城市遗址具有相同的同类模式，但与香港的元朗和鹤咀遗址不同。结果还表明，毒性更大的一溴化至五溴化同系物的数量占所有地点Sigma（22）多溴二苯醚的79.4-95.6%。在贵屿测试的所有同系物都比其他城市高58-691倍，比其他地方报告的研究高100多倍。空气中的多溴二苯醚浓度较高是由于电子废物的加热或露天焚烧，因为含有溴化阻燃剂的塑料在加热时会形成多溴二苯醚。(C)2007爱思唯尔有限公司保留所有权利。
Air samples of total suspended particles (TSP, particles less than 30-60 mu m), and particles with aerodynamic diameter smaller than 2.5 Am (PM2.5) were collected simultaneously at Guiyu (an electronic waste recycling site), three urban sites in Hong Kong and two urban sites in Guangzhou, South China from 16 August to 17 September 2004. Twenty-two PBDE congeners (BDE-3, -7, -15, -17, -28, -49, -71, -47, -66, -77, -100, -119, -99, -85, -126, -154, -153, -138, -156, -184, -183, -191) in TSP and PM2.5 were measured. The results showed that the overall average concentrations of TSP and PM2.5 collected at Guiyu were 124 and 62.1 mu g m(-3), respectively. The monthly concentrations of the sum of 22 BDE congeners contained in TSP and PM2.5 at Guiyu were 21.5 and 16.6 ng m(-3), with 74.5 and 84.3%, contributed by nine congeners (BDE-28, -47, -66, -100, -99, -154, -153, -183 and -191 respectively). This pattern was similar to Tsuen Wan site of Hong Kong. Two urban sites of Guangzhou had the same congener pattern, but were different from Yuen Long and Hok Tsui sites of Hong Kong. The results also showed that the amount of mono to penta brominated congeners, which are more toxic, accounted for 79.4-95.6% of Sigma(22) PBDEs from all sites. All congeners tested in Guiyu were up to 58-691 times higher than the other urban sites and more than 100 times higher than other studies reported elsewhere. The higher concentration in the air was due to heating or opening burning of electronic waste since PBDEs are formed when plastics containing brominated flame retardants are heated. (C) 2007 Elsevier Ltd. All rights reserved.