Regional distribution of organochlorinated pesticides in pine needles and its indication for socioeconomic development

The regional distribution of 10 potentially harmful organochlorinated pesticides (OCPs) was investigated in pine needles from 18 sites in six Chinese regions. The OCPs concentrations in six regions were as follows: ∑HCH (∑HCH=α-+β-+γ-+δ-HCH), 4.7–51.5 ng/g; ∑DDT ( p, p ′-DDT+ p, p ′-DDE+ p, p ′-DDD)...

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Bibliographic Details
Published in:Chemosphere (Oxford) 2004-02, Vol.54 (6), p.743-752
Main Authors: Xu, Diandou, Zhong, Weike, Deng, Linlin, Chai, Zhifang, Mao, Xueying
Format: Article
Language:English
Subjects:
Applied sciences
Atmospheric pollution
China
DDT
Environmental Monitoring
Environmental Pollutants - analysis
Environmental Pollution - economics
Exact sciences and technology
Gross domestic product (GDP)
HCB
Hexachlorocyclohexane (HCH)
Hydrocarbons, Chlorinated
Insecticides - analysis
Pine needle
Pinus
Pinus - chemistry
Plant Components, Aerial - chemistry
Pollutants physicochemistry study: properties, effects, reactions, transport and distribution
Pollution
Socioeconomic Factors
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Summary:The regional distribution of 10 potentially harmful organochlorinated pesticides (OCPs) was investigated in pine needles from 18 sites in six Chinese regions. The OCPs concentrations in six regions were as follows: ∑HCH (∑HCH=α-+β-+γ-+δ-HCH), 4.7–51.5 ng/g; ∑DDT ( p, p ′-DDT+ p, p ′-DDE+ p, p ′-DDD), 0.9–30.9 ng/g; hexachlorobenzene (HCB), 1.1–5.3 ng/g; ∑chlordane ( cis-chlordane + trans-chlordane), no detected–4.3 ng/g, on dry weight basis. Samples from southeast Chinese area contained the highest concentrations of ∑HCH, ∑DDT and ∑chlordane, while the contamination levels of most OCPs in southwest Chinese area were the lowest. The ratios of α/γ-HCH (ranged from 1.7 to 5) were observed to be noticeable increase from north to south China, and the ratio of 1.7 revealed the presence of the recent use of lindane in north Chinese area. The significant decrease of the sum concentrations of α- + γ-HCH from mid-1980s to the present and the strong correlation between α-, β-, γ-, δ-HCH ( r=0.87–0.98, n=18, p
ISSN:0045-6535
1879-1298
DOI:10.1016/j.chemosphere.2003.08.022