Contents and sources of polycyclic aromatic hydrocarbons and organochlorine pesticides in vegetable soils of Guangzhou, China

Chen, Laiguo; Ran, Yong; Xing, Baoshan; Mai, Bi-Xian; He, Jing; Wei, Xiuguo; Fu, Jiamo; Sheng, Guoying

doi:10.1016/j.chemosphere.2005.01.011

Cited by 185 publications

(114 citation statements)

References 62 publications

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“…While larger spatial variation of OCP fluxes in the dry deposition may be due to the great heterogeneity of the particulate matter, the spatial variation in the bulk deposition may reflect uneven distribution of OCPs in surface soils. In fact, the spatial distribution described above is consistent with previous reports of OCP concentrations in atmosphere Wang et al 2007; Yang et al 2008; Li et al 2011) or other environmental compartments (Chen et al 2005;Li et al 2006;Ma et al 2008). The coincidence of spatial variations of OCPs in both bulk deposition and topsoil suggested that atmospheric OCPs are highly affected by local sources within this study area.…”

Section: Fig 2 Spatial Variation Of Average Concentration In Dry Depsupporting

confidence: 91%

Atmospheric depositional fluxes and sources apportionment of organochlorine pesticides in the Pearl River Delta region, South China

Huang

Song

Zhang

et al. 2013

Environ Monit Assess

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Organochlorine pesticides (OCPs) have variously been phased out in agricultural activities, but they are still widely detected in air, water, and soil systems due to their recalcitrant nature in the environment. The purposes of this study were to assess potential OCP pollution via dry and wet deposition over the fast developing Pearl River Delta area with 41,700 km 2 , where the main effort has been focused on emerging pollutants such as petroleum hydrocarbons and PM2.5. We quantified both the dry and wet deposition fluxes of 19 OCPs including dichlorodiphenyltrichloroethanes (DDTs), endosulfans (Endos), and hexachlorocyclohexanes (HCHs). The results showed that each year about 67.4, 42.0, 15.0, and 8.07 kg of total OCPs, DDTs, Endos, and HCHs were returned to the ground, among which 11.7, 10.4, 0.84, and 0.16 kg were in the dry deposition forms. The large spatial variations in OCP deposition fluxes indicated that OCP pollution in the air is mainly influenced on local scales because evaporation from local soil is likely the major source of the phased out OCPs. Source analysis indicated that DDTs may be still in use as antifouling agent and/or dicofol, but Endos and HCHs were mainly derived from the residual of historical usage. The study suggests that the historical OCP pollutants are persistent at high levels in this area and should not be overlooked, while we tackle emerging pollutants.

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Section: Fig 2 Spatial Variation Of Average Concentration In Dry Depsupporting

confidence: 91%

Atmospheric depositional fluxes and sources apportionment of organochlorine pesticides in the Pearl River Delta region, South China

Huang

Song

Zhang

et al. 2013

Environ Monit Assess

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“…The contributions of HMW PAHs in the current study were slightly lower than the ratio of 83 % measured in urban Beijing (Peng et al 2011). The HMW PAHs are the highly toxic group of PAHs related to combustion releases, while the low molecular weight PAHs (LMW PAHs, two to three ring PAHs) may derive from both incomplete combustion processes and volatilization of petroleum products (Chen et al 2005). The high proportions of HMW PAHs suggested that the PAHs in suburban and rural areas of Beijing were mainly generated by combustion-related activities.…”

Section: Pah Source Apportionmentcontrasting

confidence: 78%

Distribution and risks of polycyclic aromatic hydrocarbons in suburban and rural soils of Beijing with various land uses

Peng

Wang

Zhao

et al. 2016

Environ Monit Assess

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We investigated the sources, distribution, and health risks of polycyclic aromatic hydrocarbons (PAHs) in soils of peri-urban Beijing. The mean concentrations of total 16 PAHs in suburban and rural soils of Beijing were 321.8 ± 408.2 and 219.2 ± 233.5 ng/g, respectively. The PAH concentrations decreased along the urban-suburban-rural gradient and varied with land use categories. The industrial areas had the highest soil PAH concentrations followed by the living areas, roadsides, green areas, and agricultural areas. The major sources of PAHs in these soils were coal and biomass combustion. Traffic emission was not the dominant source of PAHs in peri-urban Beijing. At a few sites, high soil PAH contents were caused by point sources such as iron and steel plants and a wood preservative factory. The incremental lifetime cancer risks (ILCRs) of adults and children exposed to PAHs in the soils were acceptable. However, cautions should be paid to the abandoned industrial sites, which might be converted to residential area during the urbanization process.

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“…DDT, chlordane, mirex and HCB) for limited usages, incomplete management framework (Huang, 1989;Qiu et al, 2005;Fu et al, 2003;Zhang, 1996;Chen et al, 2005;Loganathan and Kannan, 1994). Therefore, the purpose of this study was: (1) to explore the potential pollution sources of pesticidal POPs such as production and consumption information, (2) to summarize the management framework on pesticidal POPs, and (3) to propose countermeasures for the control and management of pesticidal POPs in China.…”

Section: Introductionmentioning

confidence: 99%

Environmental management of pesticidal POPs in China: Past, present and future

Wei

Kameya

Urano

2007

Environment International

147

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China, the largest developing country in the world, has been undergoing rapid economic growth in the past two decades. Synchronously, large quantities of persistent organic chlorinated pesticides have been used in agriculture and non-agriculture areas. Accompanying with incomplete management framework, the improper use and disposal of pesticides have caused serious pollution problems. In this study, we discussed: (1) ten persistent organochlorine pesticides in terms of historical production, consumption and number of manufacturers, import and export; (2) the current management framework of pesticidal persistent organic pollutants (POPs) with respect to legal system and government administrative system; (3) the existing problems in the management of pesticidal POPs; and proposed recommendations for countermeasures. Based on the available information, it can be concluded that records on the historical production and consumption quantities of pesticidal POPs are incomplete which makes a difficulty in the management. Although China has come a long way in developing a modern legal system, the current system is still considered weak and inefficient; and many challenges are ahead. The government administrative system has also been reformed and improved, but over-lapping jurisdictions still exist and are ineffective in managing pesticidal POPs program. To address these existing problems in pesticidal POPs management, it was suggested that more investigations should be conducted to collect information on pollution sources of pesticidal POPs, to evaluate their environmental risks, to identify new alternative chemicals and to complete management framework of pesticidal POPs in China. Furthermore, the public should be encouraged to participate in managing hazardous pesticidal POPs in China, and international cooperation and communication should be established and strengthened imperatively as well.

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Contents and sources of polycyclic aromatic hydrocarbons and organochlorine pesticides in vegetable soils of Guangzhou, China

Cited by 185 publications

References 62 publications

Atmospheric depositional fluxes and sources apportionment of organochlorine pesticides in the Pearl River Delta region, South China

Atmospheric depositional fluxes and sources apportionment of organochlorine pesticides in the Pearl River Delta region, South China

Distribution and risks of polycyclic aromatic hydrocarbons in suburban and rural soils of Beijing with various land uses

Environmental management of pesticidal POPs in China: Past, present and future

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