成都大学学报：自然科学版
成都大學學報：自然科學版
성도대학학보：자연과학판
Journal of Chengdu University (Natural Science)
2011年
3期
195-200
,共6页
潘声旺%罗竞红%何茂萍%李玲
潘聲旺%囉競紅%何茂萍%李玲
반성왕%라경홍%하무평%리령
蔬菜地土壤%有机氯农药%生态风险%成都市区
蔬菜地土壤%有機氯農藥%生態風險%成都市區
소채지토양%유궤록농약%생태풍험%성도시구
vegetable soil%organochlorine pesticides%eco-risk evaluation%Chengdu region
采用GC-ECD检测、GC/MS-MS确证的方法分析成都市14个区县蔬菜地土壤中有机氯农药（OCPs）残留水平、分布特征及可能存在的生态风险.结果表明：不同样点间OCPs残留量差异较大（20.18-104.33μg.kg^-1）,近郊区县远低于边缘区县;被检出的18种OCPs中,DDTs与HCHs检出率最高（100%）,残留水平为16.11-99.51μg.kg^-1与1.31-9.34μg.kg^-1,分别占OCPs残留总量的87.68%和8.15%,六氯苯次之（90%）,灭蚁灵、环氧七氯、硫丹Ⅰ和γ-氯丹也有不同程度的检出（44.29%-47.14%）,多分布于近郊区县,艾氏剂、狄氏剂、异狄氏剂、毒杀芬的检出率较低（32.86%-37.14%）,多分布于彭州、都江堰、大邑、崇州等地;土壤中OCPs的各种异构体、代谢物变化规律显示,DDTs、HCHs残留主要源于早期的使用或大气输入,但不排除金堂、青白江、新津等地研究期内可能有DDTs输入,崇州、彭州、都江堰、大邑等地可能有HCHs输入;生态风险分析显示,HCHs残留对于土壤生物的风险较低,而DDTs则可能对鸟类和土壤生物具有一定生态风险.
採用GC-ECD檢測、GC/MS-MS確證的方法分析成都市14箇區縣蔬菜地土壤中有機氯農藥（OCPs）殘留水平、分佈特徵及可能存在的生態風險.結果錶明：不同樣點間OCPs殘留量差異較大（20.18-104.33μg.kg^-1）,近郊區縣遠低于邊緣區縣;被檢齣的18種OCPs中,DDTs與HCHs檢齣率最高（100%）,殘留水平為16.11-99.51μg.kg^-1與1.31-9.34μg.kg^-1,分彆佔OCPs殘留總量的87.68%和8.15%,六氯苯次之（90%）,滅蟻靈、環氧七氯、硫丹Ⅰ和γ-氯丹也有不同程度的檢齣（44.29%-47.14%）,多分佈于近郊區縣,艾氏劑、狄氏劑、異狄氏劑、毒殺芬的檢齣率較低（32.86%-37.14%）,多分佈于彭州、都江堰、大邑、崇州等地;土壤中OCPs的各種異構體、代謝物變化規律顯示,DDTs、HCHs殘留主要源于早期的使用或大氣輸入,但不排除金堂、青白江、新津等地研究期內可能有DDTs輸入,崇州、彭州、都江堰、大邑等地可能有HCHs輸入;生態風險分析顯示,HCHs殘留對于土壤生物的風險較低,而DDTs則可能對鳥類和土壤生物具有一定生態風險.
채용GC-ECD검측、GC/MS-MS학증적방법분석성도시14개구현소채지토양중유궤록농약（OCPs）잔류수평、분포특정급가능존재적생태풍험.결과표명：불동양점간OCPs잔류량차이교대（20.18-104.33μg.kg^-1）,근교구현원저우변연구현;피검출적18충OCPs중,DDTs여HCHs검출솔최고（100%）,잔류수평위16.11-99.51μg.kg^-1여1.31-9.34μg.kg^-1,분별점OCPs잔류총량적87.68%화8.15%,륙록분차지（90%）,멸의령、배양칠록、류단Ⅰ화γ-록단야유불동정도적검출（44.29%-47.14%）,다분포우근교구현,애씨제、적씨제、이적씨제、독살분적검출솔교저（32.86%-37.14%）,다분포우팽주、도강언、대읍、숭주등지;토양중OCPs적각충이구체、대사물변화규률현시,DDTs、HCHs잔류주요원우조기적사용혹대기수입,단불배제금당、청백강、신진등지연구기내가능유DDTs수입,숭주、팽주、도강언、대읍등지가능유HCHs수입;생태풍험분석현시,HCHs잔류대우토양생물적풍험교저,이DDTs칙가능대조류화토양생물구유일정생태풍험.
To determine current levels of organochlorine pesticides（OCPs） and to assess their distribution characteristics and potential eco-risk in vegetable soil,soil samples were collected from fourteen districts and counties in Chengdu region of Sichuan province and twenty-three kinds of OCPs were quantified by means of gas chromatography equipped with a 63Ni electron-capture detector（GC-ECD） system.The results show that OCPs were found widely in all these samples and ranged from 20.18 to 104.33 μg·kg^-1,and residue levels of OCPs in vegetable soils from the outskirts of Chengdu（e.g.Shuangliu county,Long quanyi District,Pi county,Xindu District and Wenjiang District） were apparently less than those from outlying counties.Among eighteen kinds of OCPs found in the soil samples,including dichlorodiphenyltrichloroethane（DDT） and its principal metabolites dichlorodiphenyldichloroethylene（DDE） and dichlorodiphenyldichloroethane（DDD）,hexachlorocyclohexane（HCH） and its isomers（α-,β-,γ-,and δ-HCH）,aldrin,hexachlorobenzene,dieldrin,endrin,a-endosulfan,γ-chlordane,heptachlor epoxide,toxaphene and mirex,DDTs and HCHs were detected in all soil samples,with a range of 16.11～99.51 μg·kg^-1 for DDTs and 1.31～9.34 μg·kg^-1 for HCHs,and were the main components in residues of OCPs,accounting for 87.68% and 8.15% of the total,respectively.Hexachlorobenzene has an occurrence of 90%,a-endosulfan,γ-chlordane,heptachlor epoxide and mirex were detectable in a range of 44.29%～47.14% of all the samples,which were mostly collected in the outskirts of Chengdu.However,aldrin,dieldrin,endrin and toxaphene were only found in these sites in northwestern of Chengdu,such as Pengzhou,Du jiangyan,Dayi and Chongzhou）,accounting for 32.86%～37.14% of the collected soil samples.Various isomers in OCPs and the changing rule of metabolins indicate residues of DDTs、HCHs in the soils might come from the old usage or atmosphere input,but there might be input into environment recently in Jintang,Qin bai-jiang and Xinjin regions for DDTs,and so does in Pengzhou,Du jiang-yan,Dayi and Chongzhou regions for HCHs.The eco-risk analysis shows that HCHs residues in the soils have no obvious influence on the geobiont there,while DDTs might have certain ecological risks on birds and geobiont.
