Final published version
Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Spatial and seasonal variations of atmospheric organochlorine pesticides along the plain-mountain transect in central China
T2 - regional source vs. long-range transport and air–soil exchange
AU - Qu, Chengkai
AU - Xing, Xinli
AU - Albanese, Stefano
AU - Doherty, Angela L.
AU - Huang, Huanfang
AU - Lima, Annamaria
AU - Qi, Shihua
AU - De Vivo, Benedetto
PY - 2015/12
Y1 - 2015/12
N2 - Polyurethane foam (PUF) disk passive air samplers (PAS) were deployed to measure spatiality and seasonality of atmospheric OCPs in Jianghan Plain (JHP) and Western Hubei Mountain (WHM), to make a preliminary explorative study of the source–sink relationship of organochlorine pesticides (OCPs) and their association with the monsoon. The concentrations of individual OCPs in the JHP were generally higher than those in the WHM. Significantly high levels of DDTs and Endosulfan were found in the spring and summer, HCB was found in autumn and winter, and HCHs displayed uniform distributions. Compared with the levels of 2005, a significant decrease of atmospheric HCHs, DDTs and HCB was observed, whereas an increase in Endosulfan was observed. The air–soil equilibrium status of OCPs suggested that Dajiuhu (DJH) soils are likely to be a sink for OCPs, and JHP soils are acting as the emitter, contaminating the atmosphere at certain monitoring stations. Backward air trajectory analysis demonstrated that the seasonal fluctuation of atmospheric DDTs, HCB and Endosulfan at the DJH site were closely associated with the variations of the East Asian monsoon.
AB - Polyurethane foam (PUF) disk passive air samplers (PAS) were deployed to measure spatiality and seasonality of atmospheric OCPs in Jianghan Plain (JHP) and Western Hubei Mountain (WHM), to make a preliminary explorative study of the source–sink relationship of organochlorine pesticides (OCPs) and their association with the monsoon. The concentrations of individual OCPs in the JHP were generally higher than those in the WHM. Significantly high levels of DDTs and Endosulfan were found in the spring and summer, HCB was found in autumn and winter, and HCHs displayed uniform distributions. Compared with the levels of 2005, a significant decrease of atmospheric HCHs, DDTs and HCB was observed, whereas an increase in Endosulfan was observed. The air–soil equilibrium status of OCPs suggested that Dajiuhu (DJH) soils are likely to be a sink for OCPs, and JHP soils are acting as the emitter, contaminating the atmosphere at certain monitoring stations. Backward air trajectory analysis demonstrated that the seasonal fluctuation of atmospheric DDTs, HCB and Endosulfan at the DJH site were closely associated with the variations of the East Asian monsoon.
KW - Organochlorine pesticides
KW - Passive air sampling
KW - Plain
KW - Mountain
KW - Air–soil exchange
KW - East Asia monsoon
U2 - 10.1016/j.atmosenv.2015.09.008
DO - 10.1016/j.atmosenv.2015.09.008
M3 - Journal article
VL - 122
SP - 31
EP - 40
JO - Atmospheric Environment
JF - Atmospheric Environment
SN - 1352-2310
ER -