洪湖濕地水鳥肝臟中有機(jī)氯農(nóng)藥的分布.pdf

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1、中國環(huán)境科學(xué)2014，34(8)：2140~2147ChinaEnvironmentalScience洪湖濕地水鳥肝臟中有機(jī)氯農(nóng)藥的分布胡英，祁士華，袁林喜(中國地質(zhì)大學(xué)生物地質(zhì)與環(huán)境地質(zhì)國家重點實驗室，湖北武漢430074)摘要：對我國中部地區(qū)洪湖濕地6種水鳥肝臟中2O種有機(jī)氯農(nóng)藥進(jìn)行了測量．發(fā)現(xiàn)DDTs是最主要的OCPs，約占總OCPs的38．3％~93．O％，其平均含量范圍為2．74-121．72ng／g濕重．HCHs和DDTs的富集形態(tài)說明洪湖濕地這些有機(jī)氯農(nóng)藥主要來源于歷史殘留．不同水鳥肝臟中~OCPs含量差異顯著(P

2、～137．22n~g濕重)要遠(yuǎn)高于其他水鳥(5．00~21．49ng／g濕重)，這種差異的產(chǎn)生主要與其飲食習(xí)性有關(guān)．大多數(shù)水鳥HCHs性別間基本無差異；但白鷺、池鷺雄性水鳥中總OCPs平均含量(白鷺：136．90ng／g濕重；池鷺：52．41ng／g濕重)高于雌性水鳥(白鷺：126．60n#g濕重；池鷺：49．78n#g濕重)．與已有研究相比，洪湖濕地水鳥體內(nèi)OCPs含量處于較低水平．風(fēng)險評價結(jié)果表明研究區(qū)水鳥肝臟中OCPs含量不會對該地區(qū)水鳥種群產(chǎn)生不利效應(yīng)．關(guān)鍵詞：有機(jī)氯農(nóng)藥；水鳥：洪湖濕地中圖分類號：X592文獻(xiàn)標(biāo)識碼：A文章編號：1000—6923(2014)08—2140—0

3、8Distributionof0rganOchl0rinepesticidesintheliverofwaterbirdsfromHonghuwetland，CentralChina．HUng，QIShi-hua，YUANLin-xi(StateKeyLaboratoryofBiogeologyandEnvironmentalGeology,ChinaUniversityofGeosciences，Wuhan430074，China)．ChinaEnvironmentalScience，2014，34(8)：2140~2147Abstract：Twentyorganochlorinep

4、esticides(OCPs)weremeasuredintheliverofsixwaterbirdspeciesfromHonghuwetland．AmongOCPs，DDTswerethemostprevalentcompounds(38．3％~93．O％)，withaverageconcentrationrangingfrom2．74to121．72ng／gwetweight．TheaccumulationprofilesofHCHsandDDTssuggestedthattheseOCPsintheHonghuwetlandwerelargelyderivedfromhist

5、oricalusage．SignificantinterspecificdiferenceswereobservedinthelevelsofSHInOCPsintheliverofallwaterbirdsrP<0．01)ConcentrationsoftotalOCPsinlittleegrets(Egrettagarzetta)andchinese-pondheronsrdeolabacchus)(37．91-137．22ng／gwetweight)werehigherthanthoseintheotherbirds(5．00~21．49ng／gwetweight)，whichm

6、ightbeattributedtotheirdiferentdietaryhabits．HigheraverageconcentrationsofOCPswereobservedinmales(1ittleegrets：136．90ng／gwetweight；chinese—pondherons：52．41ng／gwetweight)thaninfemales(1itleegrets：126．60ng／gwetweight；chinese—pondherons：49．78ng／gwetweight)forlittleegretsandchinese—pondherons．Compar

7、edwithotherregionsworldwide，concentrationsofOCPsinwaterbirdsfromHonghuwetlandwereatlowlevels．TheanalysisofriskassessmentindicatedthattheconcentrationsofOCPsdetectedinthepresentstudywerenotexpectedtoposeanyhazardtowaterbirdpo