Size distribution and seasonal variations of particle-associated organochlorine pesticides in Jinan, China

作者：Xu Hongyu; Du Shiyong; Cui Zhaojie^*; Zhang Houyong; Fan Guolan; Yin Yongquan

来源：Journal of Environmental Monitoring, 2011, 13(9): 2605-2611.

DOI：10.1039/c1em10394f

The concentrations of organochlorine pesticides (OCPs) in atmospheric particulate matter in Jinan, China, over the period from July 2009 to June 2010, were determined to study their pollution levels, compositions, size distribution and seasonal variations. All target compounds except endosulfan sulfate were detected. The annual average concentration of Sigma 18 OCPs was 92 +/- 82 pg m(-3). Total HCH, total endrin, aldrin, endosulfan compounds and total DDT compounds were the primary components, accounting for approximately 27%, 20%, 16%, 14% and 10% of total OCPs, respectively. The annual mean ng g(-1) concentrations of Sigma 18 OCPs in PM2.5, PM5, PM10 and TSP were 481 +/- 190, 433 +/- 161, 414 +/- 158 and 264 +/- 193, respectively, indicating that most OCPs tend to be strongly absorbed by fine air particles which were strongly related to a potential health risk. Distinct seasonal trends were found in OCPs concentrations with high concentrations appearing in November and March whereas low concentrations appeared in the summer, which were significantly positively correlated with particulate mass concentrations and Air Pollution Index (API). The high OCPs levels could be attributed to the seasonal usage, long-range atmospheric transport as well as adverse meteorological conditions.

• 出版日期2011-9
• 单位山东大学