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1、2017,36(6):1118-1123农业环境科学学报2017年6月JournalofAgro-EnvironmentScience李玉双,陈琳,郭倩,等.沈阳市新民设施农业土壤中邻苯二甲酸酯的污染特征[J].农业环境科学学报,2017,36(6):1118-1123.LIYu-shuang,CHENLin,GUOQian,etal.PollutioncharacteristicsofphthalateestersingreenhouseagriculturalsoilinXinmin,ShenyangCity[J]
2、.JournalofAgro-EnvironmentScience,2017,36(6):1118-1123.沈阳市新民设施农业土壤中邻苯二甲酸酯的污染特征李玉双,陈琳,郭倩,宋雪英,侯永侠,李冰(区域污染环境生态修复教育部重点实验室,沈阳大学环境学院,沈阳110044)摘要:以沈阳市新民蔬菜基地设施农业土壤为研究对象,采用超声波提取法结合气相色谱检测技术,分析了土壤中美国环保局优控的6种邻苯二甲酸酯(Phthalicacidesters,PAEs)的分布特征。结果表明:在分析的41个设施农业土壤样品中PAEs化合物总
3、量(ΣPAEs)的浓度范围为0.52~1.73mg·kg-1,平均值为0.94mg·kg-1,其中32%的样品ΣPAEs超过1mg·kg-1;DnBP和DEHP的检出率均为100%,二者之和占土壤ΣPAEs的78%,为当地设施农业土壤中的主要PAEs污染组分。相关分析结果表明,设施棚龄、土壤理化性质(pH值、有机质、总氮、总磷)与土壤中PAEs含量无显著相关关系。关键词:邻苯二甲酸酯;设施农业;土壤中图分类号:X53文献标志码:A文章编号:1672-2043(2017)06-1118-06doi:10.11654/ja
4、es.2016-1510PollutioncharacteristicsofphthalateestersingreenhouseagriculturalsoilinXinmin,ShenyangCityLIYu-shuang,CHENLin,GUOQian,SONGXue-ying,HOUYong-xia,LIBing(KeyLaboratoryofRegionalEnvironmentandEco-RemediationofMinistryofEducation,EnvironmentalCollege,Sheny
5、angUniversity,Shenyang110044,China)Abstract:Theconcentrationanddistributionof6phthalicacidesters(PAEs),listedasprioritypollutantsbyUnitedStatesEnvironmentalProtectionAgency,in41greenhouseagriculturalsoilsinXinmin(ShenyangCity,China),wereinvestigatedbyultrasonice
6、xtractioncom-binedwithGC-FID.Theresultsshowedthatthetotalconcentrationofthe6PAEs(ΣPAEs)inallthesoilsamplesrangedfrom0.52mg·kg-1to1.73mg·kg-1,withameanof0.94mg·kg-1.Moreover,theΣPAEsexceeded1mg·kg-1in32%ofthetestedsoilsamples.Thetwodomi-nantPAEsweredi-n-butylphth
7、alate(DnBP)andbis-(2-Ethylhexyl)phthalate(DEHP),whichweredetectedinallthesoilsamplesandaccountedfor78%oftheΣPAEs.TherewerenosignificantcorrelationsbetweenthePAEsconcentrationsandthecroppingperiodorthesoilphysiochemicalcharacteristics(soilpH,organicmatter,totalni
8、trogen,andtotalphosphorus).Keywords:phthalicacidesters;greenhouseagricultural;soil邻苯二甲酸酯(Phthalicacidesters,PAEs)是邻苯遗传毒性效应,具有生物累积和放大效应,可进入食二甲酸与醇类生成的酯的统称,主要用作塑料的增塑物链危及