唐山市土壤中六六六(HCHs)和滴滴涕(DDTs)的分布特征
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摘要
目的研究2008—2010年唐山地区六六六和滴滴涕的残留水平和分布特征,了解最近两年土壤中HCHs和DDTs的分布特征变化,为该地区研究持久性有机污染物及食品安全风险评估提供基础依据。方法采用超声波萃取—毛细管柱气相色谱法测定土壤中的HCHs和DDTs。结果 5种类型土壤HCHs和DDTs均有检出,HCHs的平均含量是16.07 ng/g,DDTs的平均含量是34.65 ng/g。结论唐山市土壤中有机氯残留水平均未超过国家土壤环境质量标准中自然背景值,但比其他地区的有机氯残留水平高。
Objectives To study the distributional characteristics of organochlorine pesticides in soil in Tangshan in 2008 to 2010,in order to provide basis for investigating the residues of organochlorine pesticides and evaluating the risk for food safety.Methods The concentrations of HCHs and DDTs were determined by GC.Results The detection rate of HCHs and DDTs in five types of soil samples were 100%.The average content was 16.07 ng/g for HCHs and 34.65 ng/g for DDTs.Conclusions The concentrations of HCHs and DDTs in soil in Tangshan did not exceed the first level limit of the national standard for soil environment quality(GB 15618-95),but the residual level of HCHs and DDTs in soil in Tangshan was higher than that in other areas.
Objectives To study the distributional characteristics of organochlorine pesticides in soil in Tangshan in 2008 to 2010,in order to provide basis for investigating the residues of organochlorine pesticides and evaluating the risk for food safety.Methods The concentrations of HCHs and DDTs were determined by GC.Results The detection rate of HCHs and DDTs in five types of soil samples were 100%.The average content was 16.07 ng/g for HCHs and 34.65 ng/g for DDTs.Conclusions The concentrations of HCHs and DDTs in soil in Tangshan did not exceed the first level limit of the national standard for soil environment quality(GB 15618-95),but the residual level of HCHs and DDTs in soil in Tangshan was higher than that in other areas.
引文
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[2]金士威,黎明,廖涛,等.武汉市郊农田土壤中有机氯农药的残留分析[J].武汉工程大学学报,2009,31(7):1-3.
[3]刘晨,陈家玮,杨忠芳.北京郊区农田土壤中滴滴涕和六六六地球化学特征研究[J].地学前缘,2008,15(5):82-88.
[4]张天彬,饶勇,万洪富.东莞市土壤中有机氯农药的含量及组成[J].中国环境科学.2005,25(suppl):89-93.
[5]陈向红,胡迪琴,廖义军,等.广州地区农田土壤中有机氯农药残留分布特征[J].环境科学与管理.2009,34(6):117-120.
[6]庞绪贵,张帆,王红晋,等.鲁西南地区土壤中有机氯农药的残留及其分布特征[J].地质通报,2009,28(5).
[7]邹其嘉,王子平,陈菲比,等.唐山地震灾区社会恢复与社会问题研究[M].地震出版社,397-405.
[8]廖凤荣,唐跃刚,吴明远,等.唐山市土壤中有机氯农药的初步研究[J].农业环境与发展,2008,5:132-135.
[9]环境保护部,国家质量监督检验检疫总局GB 15618-1995.土壤环境质量标准[S].北京:中国标准出版社,1996.
[10]王伟,李兴红,陆海,等.银川城市土壤有机氯农药残留及其潜在风险.温州大学学报.自然科学版,20082,9(2):32-36.
[11]Fu S,Chu S G,Xu X B.Organochlorine pesticide residue in soilsfrom Tibet[J].Bull Environ Contam Toxicol,2001,66:171-177.
[12]RupLal,GunjanPandey,PoojaSharma,et al.Biochemistry ofmicrobial degradation of hexachlorocyclohexane and prospects forbioremediation.Microbiology and Moleclar Biology Reviews,2010,74(1):58-80.
[13]王京文,陆宏,厉仁安.慈溪市蔬菜地有机氯农药残留调查[J].浙江农业科学.2003,1:40-41.
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