Distribution of particle-phase hydrocarbons, PAHs and OCPs in Tianjin, China

Wu, Shi; Tao, Shu; Zhang, Zhi-Huan; Lan, Tian; Zuo, Qiting

doi:10.1016/j.atmosenv.2005.08.031

Cited by 74 publications

(42 citation statements)

References 45 publications

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“…The DDT residues at these sites could originate from atmospheric deposition from point sources. The high p,p′-DDT concentration (0.577-1.98 ng m -3 ; Wu et al 2005) in total suspended particles at Hangu also supports the results.…”

Section: Regional Differences In the Pollution Loadssupporting

confidence: 74%

Regional differences and sources of organochlorine pesticides in soils surrounding chemical industrial parks

Wang

Lü

et al. 2008

Environ Monit Assess

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Concentrations of organochlorine pesticides (OCPs; dichlorodiphenyltrichloroethanes (DDTs), hexachlorocyclohexanes (HCHs), hexachlorobenzene (HCB)) were investigated in 105 soil samples collected in vicinity of the chemical industrial parks in Tianjin, China. OCP concentrations significantly varied in the study area, high HCH and DDT levels were found close to the chemical industrial parks. The intensity of agricultural activity and distance from the potential OCP emitters have important influences on the OCP residue distributions. Principal component analysis indicates that HCH pollution is a mix of historical technical HCH and current lindane pollution and DDT pollution input is only due to technical DDT sources. The significant correlations of OCP compounds reveal that HCHs, DDTs and HCB could have some similar sources of origin.

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Section: Regional Differences In the Pollution Loadssupporting

confidence: 74%

Regional differences and sources of organochlorine pesticides in soils surrounding chemical industrial parks

Wang

Lü

et al. 2008

Environ Monit Assess

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“…High DDT concentrations in human tissues (breast milk, blood and fat) have been detected in Tianjin (Wang et al, 2008b) because of their potential for bioaccumulation in the human body through daily exposure. Wu et al (2005) also found high particle-phase contents of OCPs in Tianjin. In a recent survey on atmospheric OCPs of 37 Chinese cities Tianjin was one of cities with the most significant OCPs pollution (Liu et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

“…Tianjin was one of the most severely HCHs polluted areas in China . High concentrations of HCHs were detected in soil, which could revolatilize and contribute to the local air concentration (Wu et al, 2005;Wang et al, 2006a;Tao et al, 2008). ) were in the range of 164-7128 and 208-5242 for 2 years, respectively.…”

Section: Spatial and Seasonal Variations Of Hchsmentioning

confidence: 99%

Spatial and seasonal variations of organochlorine compounds in air on an urban–rural transect across Tianjin, China

Zheng

Chen²,

Liu

et al. 2010

Chemosphere

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a b s t r a c tThe spatial and seasonal variations of atmospheric organochlorine compounds (OCs) concentrations was investigated at six sites on an urban-rural transect in Tianjin, China from July 2006 to June 2008 using XAD-based passive air samplers. The samplers were deployed for six time periods. Hexachlorocyclohexanes (HCHs) air concentrations were highest at Tanggu and Tuanbowa and decreased dramatically further away from these two sites. The maximum proportion of b-HCH compared to RHCHs (12.1-32.2%) was found in Hangu, suggesting its persistence. The a/c-HCH ratio was between 1.26 and 5.79 which signified the combined influence of technical HCHs and lindane. Dichlorodiphenyltrichloroethane related compounds (DDTs) were higher at Hangu compared with other sites which was attributed to its continuing production there. Low p,p 0 -DDE/p,p 0 -DDT in Hangu and Tanggu were found, reflecting the fresh input of DDTs while the relatively high o,p 0 -DDT/p,p 0 -DDT ratios indicated the agricultural application of dicofol. Polychlorinated biphenyls distribution elucidated that the urban area could be their emission source. Hexachlorobenzene, with the highest concentrations in Tanggu, showed the smallest industrial/urbanrural gradient ($4-9 times) than those of other chemicals ($17-49 for RHCHs, $10-77 for RDDTs), but comparable with PCBs (PCB28 and PCB52) ($3-10). Seasonal variations of OCPs were featured by higher concentration in spring and summer and lower in winter. This was likely associated with (i) their temperature-driven re-volatilization and (ii) application of dicofol in late spring and summer and DDTcontaining antifouling paints for fishing ships in summer. However seasonality of PCBs concentrations was site-specific on the Tianjin scale.

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“…Although pesticide pollution of air has been well documented around the world, there were limited research data on these 18 OCPs, thus only HCHs and DDTs in PM were compared with that in other cities in China, such as TSP in Tianjin (1.05 ± 1.88 ng m −3 for HCHs and 0.839 ± 0.713 ng m −3 for DDTs) [17], Guangzhou (2 pg m −3 for ␣-+ ␥-HCH, 91.5 pg m −3 for DDTs (p,p -DDE, p,p -DDD, o,p -DDT)), Hongkong (n.d. for HCHs and 18.5 pg m −3 for DDTs (p,p -DDE, p,p -DDD, o,p -DDT)) [15]. The results showed that PM in Beijing was heavily polluted by OCPs.…”

Section: Ocps Concentrationmentioning

confidence: 99%

Organochlorine Pesticides in the Soil in Linfen, China

Cheng

Liu

et al. 2008

Bull Environ Contam Toxicol

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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.

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Distribution of particle-phase hydrocarbons, PAHs and OCPs in Tianjin, China

Cited by 74 publications

References 45 publications

Regional differences and sources of organochlorine pesticides in soils surrounding chemical industrial parks

Regional differences and sources of organochlorine pesticides in soils surrounding chemical industrial parks

Spatial and seasonal variations of organochlorine compounds in air on an urban–rural transect across Tianjin, China

Organochlorine Pesticides in the Soil in Linfen, China

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