Organochlorine pesticides in particulate matter of Beijing, China

Abstract

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.

Characterization of HCHs and DDTs in urban dustfall and prediction of soil burden in a metropolis-Beijing, China

“…The cleanup and analytical procedures were carried out according the previous reports (Li et al, 2006;Wang et al, 2008). Briefly, after 1 mL of TCMX added, the dustfall was ultrasonically extracted in 30 mL acetone/hexane (1/1) thrice and centrifuged for separation.…”

“…Contaminated soil could still continue to be a source of current atmospheric contamination and result in ongoing exposure for the public health. As a continuous study of the previous ''2000 project'', atmospheric particulate matter (PM) was characterized in urban city in 2005 and Beijing was categorized as a city that is highly contaminated with OCPs (Wang et al, 2008).…”

Car Engines Air Filters. A Useful Ambient Air Sampler and/or a Possible Hazardous Waste?

“…Never the less, CAFs can be the ideal medium for a big number of pollutants, due to the variety of chemicals that bind on particulate matter (PM). Almost all important hydrophobic organic compounds have been detected on atmospheric PM; polycyclic aromatic hydrocarbons (PAHs, Cincinelli et al, 2007;Castro-Jimenez et al, 2012;Martellini et al, 2012), persistent organic pollutants (POPs), including polychlorinated biphenyls (PCBs) and polychlorinated dibenzo-p-dioxins/furans (PCDD/Fs, Kouimtzis et al, 2002;Katsoyiannis et al, 2010), polybrominated diphenylethers (Wang et al, 2010;Ni et al, 2011;Birgul et al, 2012;Lin et al, 2012;Besis et al, 2014;Cincinelli et al, 2014), organochlorine pesticides (Wang et al, 2008), aliphatic hydrocarbons (Cincinelli et al, 2004, Schnelle-Kreis, 2005Wang et al, 2013), levoglucosan as well as almost all important inorganic contaminants (like heavy metals, Pb, Cd, Ni, Cr, V, Mn, Cu and Fe, Samara and Voutsa, 2005;Berg et al, 2008). Many of these chemicals are associated with carcinogenicity, and some of them (Benzo[a]pyrene (BaP), As, Cd, Hg, Ni) are regulated within the European Union by the Council Directive 2004/107/EC.…”

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

“…The analytical method is similar to that described earlier (Wang et al 2008a). Each soil sample (5.0 g dry weight) was mixed with 1 g anhydrous sodium sulfate.…”

“…Therefore, the soil ecosystem around watersheds plays an important role in storage, transport, and cycling of HCH and DDT in the soil-plant and soil-water interaction zones. Several earlier studies focused on how HCH and DDT residues were distributed in the soil (Harner et al 1999;Feng et al 2003;Kannan et al 2003;Gong et al 2004;Li et al 2006;Gao et al 2008), but only a few studies discussed the factors influencing the residue levels and patterns (Oliver et al 2003;Wang et al 2005a;Hao et al 2008;Wang et al 2008a). Understanding of factors affecting HCH and DDT residues in soils is important for developing strategies for the monitoring and management of persistent organic pollutants.…”