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1、中国环境科学2014,34(8):2140~2147ChinaEnvironmentalScience洪湖湿地水鸟肝脏中有机氯农药的分布胡英,祁士华,袁林喜(中国地质大学生物地质与环境地质国家重点实验室,湖北武汉430074)摘要:对我国中部地区洪湖湿地6种水鸟肝脏中2O种有机氯农药进行了测量.发现DDTs是最主要的OCPs,约占总OCPs的38.3%~93.O%,其平均含量范围为2.74-121.72ng/g湿重.HCHs和DDTs的富集形态说明洪湖湿地这些有机氯农药主要来源于历史残留.不同水鸟肝脏中~OCPs含量差异显著(P2、~137.22n~g湿重)要远高于其他水鸟(5.00~21.49ng/g湿重),这种差异的产生主要与其饮食习性有关.大多数水鸟HCHs性别间基本无差异;但白鹭、池鹭雄性水鸟中总OCPs平均含量(白鹭:136.90ng/g湿重;池鹭:52.41ng/g湿重)高于雌性水鸟(白鹭:126.60n#g湿重;池鹭:49.78n#g湿重).与已有研究相比,洪湖湿地水鸟体内OCPs含量处于较低水平.风险评价结果表明研究区水鸟肝脏中OCPs含量不会对该地区水鸟种群产生不利效应.关键词:有机氯农药;水鸟:洪湖湿地中图分类号:X592文献标识码:A文章编号:1000—6923(2014)08—2140—03、8Distributionof0rganOchl0rinepesticidesintheliverofwaterbirdsfromHonghuwetland,CentralChina.HUng,QIShi-hua,YUANLin-xi(StateKeyLaboratoryofBiogeologyandEnvironmentalGeology,ChinaUniversityofGeosciences,Wuhan430074,China).ChinaEnvironmentalScience,2014,34(8):2140~2147Abstract:Twentyorganochlorinep4、esticides(OCPs)weremeasuredintheliverofsixwaterbirdspeciesfromHonghuwetland.AmongOCPs,DDTswerethemostprevalentcompounds(38.3%~93.O%),withaverageconcentrationrangingfrom2.74to121.72ng/gwetweight.TheaccumulationprofilesofHCHsandDDTssuggestedthattheseOCPsintheHonghuwetlandwerelargelyderivedfromhist5、oricalusage.SignificantinterspecificdiferenceswereobservedinthelevelsofSHInOCPsintheliverofallwaterbirdsrP<0.01)ConcentrationsoftotalOCPsinlittleegrets(Egrettagarzetta)andchinese-pondheronsrdeolabacchus)(37.91-137.22ng/gwetweight)werehigherthanthoseintheotherbirds(5.00~21.49ng/gwetweight),whichm6、ightbeattributedtotheirdiferentdietaryhabits.HigheraverageconcentrationsofOCPswereobservedinmales(1ittleegrets:136.90ng/gwetweight;chinese—pondherons:52.41ng/gwetweight)thaninfemales(1itleegrets:126.60ng/gwetweight;chinese—pondherons:49.78ng/gwetweight)forlittleegretsandchinese—pondherons.Compar7、edwithotherregionsworldwide,concentrationsofOCPsinwaterbirdsfromHonghuwetlandwereatlowlevels.TheanalysisofriskassessmentindicatedthattheconcentrationsofOCPsdetectedinthepresentstudywerenotexpectedtoposeanyhazardtowaterbirdpo
2、~137.22n~g湿重)要远高于其他水鸟(5.00~21.49ng/g湿重),这种差异的产生主要与其饮食习性有关.大多数水鸟HCHs性别间基本无差异;但白鹭、池鹭雄性水鸟中总OCPs平均含量(白鹭:136.90ng/g湿重;池鹭:52.41ng/g湿重)高于雌性水鸟(白鹭:126.60n#g湿重;池鹭:49.78n#g湿重).与已有研究相比,洪湖湿地水鸟体内OCPs含量处于较低水平.风险评价结果表明研究区水鸟肝脏中OCPs含量不会对该地区水鸟种群产生不利效应.关键词:有机氯农药;水鸟:洪湖湿地中图分类号:X592文献标识码:A文章编号: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
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