Polychlorinated biphenyls in the atmosphere of Taizhou, a major e-waste dismantling area in China.
PM2.5, total suspended particles (TSP) and gas phase samples were collected at two sites of Taizhou, a major e-waste dismantling area in China. Concentrations, seasonal variations, congener profiles, gas-particle partitioning and size distribution of the atmospheric polychlorinated biphenyls (PCBs) were studied to assess the current state of atmospheric PCBs after the phase out of massive historical dismantling of PCBs containing e-wastes. The average sigma38PCBs concentration in the ambient air (TSP plus gas phase) near the e-waste dismantling area was (12,407 +/- 9592) pg/m3 in winter, which was substantially lower than that found one decade ago. However, the atmospheric PCBs level near the e-waste dismantling area was 54 times of the reference urban site, indicating that the impact of the historical dismantling of PCBs containing e-wastes was still significant. Tri-Penta-CBs were dominant homologues, consisting with their dominant global production. Size distribution of particle-bound PCBs showed that higher chlorinated CBs tended to partition more to the fine particles, facilitating its long range air transportation.
Han
Wenliang
W
Institute of Environmental Pollution and Health, Shanghai University, Shanghai 200072, China. wl_han@163.com
Feng
Jialiang
J
Gu
Zeping
Z
Wu
Minghong
M
Sheng
Guoying
G
Fu
Jiamo
J
D000393:Air Pollutants / Q000737:chemistry*; D001272:Atmosphere; D002681:China; D004581:Electronics; D004784:Environmental Monitoring; D005740:Gases; D007220:Industrial Waste; D052638:Particulate Matter; D011078:Polychlorinated Biphenyls / Q000737:chemistry*; D012037:Refuse Disposal; D012621:Seasons; D012987:Soil / Q000032:analysis; D012989:Soil Pollutants / Q000737:chemistry; D013997:Time Factors
D000393:Air Pollutants; D005740:Gases; D007220:Industrial Waste; D052638:Particulate Matter; D012987:Soil; D012989:Soil Pollutants; D011078:Polychlorinated Biphenyls