Organochlorine pesticides (DDTs and HCHs) in soils from the outskirts of Beijing, China

Zhu, Yanhui; Liu, Hui; Xi, Zairong; Cheng, Hangxin; Xu, Xiaobai

doi:10.1016/j.chemosphere.2005.04.018

“…The mean percentage of individual compounds in both PM 2.5 and PM 10 were as follows: (Fig. 3), which was different from the order of p,p -DDE > p,p -DDT > p,p -DDD > o,p -DDT reported in soils in Beijing [14]. This suggested that the DDT compounds in PM was not merely from soil release, newly input was likely existed.…”

Section: Ddtsmentioning

confidence: 83%

Organochlorine pesticides in particulate matter of Beijing, China

Wang

¹

,

Li

²

,

Cheng

³

et al. 2008

Journal of Hazardous Materials

Self Cite

View full text Add to dashboard Cite

Eighteen organochlorine pesticides (OCPs) in air particulate matter (PM) samples collected from 20 sites in Beijing, China in 2005 and 2006 were analyzed to determine the composition, spatial distribution and sources. Total OCPs of PM 2.5 and PM 10 ranged from 32.59 pg m −3 to 9232.31 pg m −3 and 80.96 pg m −3 to 9434.97 pg m −3 , respectively, categorized as heavier pollution compared to other cities of China. Among six kinds of functional zones involved, commercial areas and industrial centers were heavily polluted. Distinct concentrations variations were detected in PM with different particle diameters. Pollution distribution was spatially heterogeneous inside the city. The most heavily polluted sites located in the southeast part of the city, where laid many chemical factories. Compositional analysis and principal component analysis (PCA) suggested that past usage of OCPs was the main source, though there were new inputs in some sites.

show abstract

“…It is reported that hexachlorocyclohexanes (HCHs) and dichlorodiphenyltrichloroethanes (DDTs) accounted for 83.3% of total pesticides sold in Beijing before 1979. Till now, OCPs continue to be detected in atmosphere, water, soil, and biota of Beijing [11][12][13][14]. An earlier survey [11] has reported HCHs and DDTs residues were 240 pg m −3 and 962 pg m −3 in total suspend particles (TSP), 130 pg m −3 and 528 pg m −3 in PM 2.5 of Beijing.…”

Section: Introductionmentioning

confidence: 99%

Organochlorine Pesticides in the Soil in Linfen, China

Cheng

¹

,

Fu

²

,

Liu

³

et al. 2008

Bull Environ Contam Toxicol

View full text Add to dashboard Cite

Eighteen organochlorine pesticides (OCPs) in air particulate matter (PM) samples collected from 20 sites in Beijing, China in 2005 and 2006 were analyzed to determine the composition, spatial distribution and sources. Total OCPs of PM 2.5 and PM 10 ranged from 32.59 pg m −3 to 9232.31 pg m −3 and 80.96 pg m −3 to 9434.97 pg m −3 , respectively, categorized as heavier pollution compared to other cities of China. Among six kinds of functional zones involved, commercial areas and industrial centers were heavily polluted. Distinct concentrations variations were detected in PM with different particle diameters. Pollution distribution was spatially heterogeneous inside the city. The most heavily polluted sites located in the southeast part of the city, where laid many chemical factories. Compositional analysis and principal component analysis (PCA) suggested that past usage of OCPs was the main source, though there were new inputs in some sites.

show abstract

“…A relatively high proportion of b-HCH (69% of P HCH) confirmed that the technical HCH had not been used in this region recently (Zhu et al 2005). The predominance of b-HCH among HCH in most soil samples suggested that HCH was mainly from historical inputs (Toan et al 2007).…”

Section: Concentrations Of Hch and Ddt In The Study Areamentioning

confidence: 71%

“…Significant positive correlations among a-HCH, b-HCH, c-HCH, P HCH and b-HCH/c-HCH with TOC, and between d-HCH and pH were observed. The correlation between HCH and TOC suggests binding of HCH to soil organic matter (Zhu et al 2005). A correlation between pH and d-HCH was found, but such relationships were not found for DDT and other HCH isomers, indicating that soil pH has no obvious effect on DDT and HCH residues in the study area.…”

Section: Effect Of Soil Textures On the Hch And Ddt Residuesmentioning

confidence: 82%

Factors affecting HCH and DDT in soils around watersheds of Beijing reservoirs, China

Hu

¹

,

Lü

²

,

Wang

³

et al. 2009

Environ Geochem Health

View full text Add to dashboard Cite

The factors that influence the dynamics of hexachlorocyclohexane (HCH) and dichlorodiphenyltrichloroethane (DDT) in soils around the watersheds of Beijing reservoirs were examined. Compared with other studies on HCH and DDT in soils and established reference values, the concentrations of HCH and DDT in soils around our study area were relatively low. The relationships between HCH and DDT concentrations and land use, soil texture, and soil properties were discussed. HCH and DDT concentrations were higher in arable soils than those in uncultivated fallow soils. Although land use was the most important factor affecting HCH and DDT residues, additional factors such as soil texture and soil total organic carbon were also involved in pesticide retention in soils. The results indicated that the historical agricultural applications of HCH and DDT were the major source of their residues. Atmospheric deposition, as well as long-distance transportation and inputs from surrounding weathered agricultural soils may also serve as important sources of HCH and DDT residues in the watersheds.

show abstract

Organochlorine pesticides (DDTs and HCHs) in soils from the outskirts of Beijing, China

Cited by 137 publications

References 30 publications

Organochlorine pesticides in particulate matter of Beijing, China

Organochlorine pesticides in particulate matter of Beijing, China

Organochlorine Pesticides in the Soil in Linfen, China

Factors affecting HCH and DDT in soils around watersheds of Beijing reservoirs, China

Contact Info

Product

Resources

About