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时间:2018-09-18
《固相萃取_气相色谱法测定水中13种多溴联苯醚》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、第37卷第6N期Vol.37No.6N2014年6月EnvironmentalScience&TechnologyJun.第372014卷由宗政,孔德洋,许静,等.固相萃取-气相色谱法测定水中13种多溴联苯醚[J].环境科学与技术,2014,37(6N):230-233.YouZongzheng,KongDeyang,XuJing,etal.Determinationof13polybrominatedbiphenylethers(PBDEs)inwaterusingsolid-phaseextractionandgaschromatography[J].En
2、viron-mentalScience&Technology,2014,37(6N):230-233.固相萃取-气相色谱法测定水中13种多溴联苯醚1,211311,2*由宗政,孔德洋,许静,裴佳佳,马山山,单正军(1.环保部南京环境科学研究所,江苏南京210042;2.南京农业大学资源与环境学院,江苏南京210095;3.安徽六国化工股份有限公司,安徽铜陵244021)摘要:建立水中13种多溴联苯醚(Polybrominateddiphenylethers,PBDEs)固相(solid-phaseextraction,SPE)萃取-气相色谱分析方法。水样经弗罗
3、里硅土(Florisil)固相萃取柱富集后,用2mL正己烷和5mL正己烷:二氯甲烷(V∶V=8∶2)进行洗脱,采用HP-5(30m×320μm×0.25μm)毛细管柱分离,气相色谱仪(GC-uECD)检测。结果表明,在0.05、0.25、0.5μg/L3个添加水平中,13种PBDEs的平均添加回收率在67.9%~121.5%的范围内,相对标准偏差为2.5%~12.3%。其中BDE-209的平均添加回收率为67.9%~71.9%,相对标准偏差为5.2%~8.0%。BDE-209的方法检出限是1.2ng/L;其余12种PBDEs的方法检出限是0.11~0.5ng/
4、L。该方法准确度较高;稳定性和回收率良好;可测定多组分PBDEs,满足环境样品中PBDEs的分析。关键词:多溴联苯醚;气相色谱;固相萃取;水样中图分类号:X830.2文献标志码:Adoi:10.3969/j.issn.1003-6504.2014.6N.051文章编号:1003-6504(2014)6N-0230-04Determinationof13PolybrominatedBiphenylEthers(PBDEs)inWaterUsingSolid-PhaseExtractionandGasChromatography1,211311,2YOUZongz
5、heng,KONGDeyang,XUJing,PEIJiajia,MAShanshan,SHANZhengjun(1.NanjingInstituteofEnvironmentalSciences,MinistryofEnvironmentalProtection,Nanjing,210042,China;2.CollegeofResourcesandEnvironmentalSciences,NanjingAgricuturalUniversity,Nanjing210095,China;3.TonglingChemicalIndustryGroupCo.,
6、Ltd,Tongling,244021,China)Abstract:Asolid-phaseextractionandgaschromatographicmethodwasestablishedtosimultaneouslydetermine13Poly-brominatedDiphenylEthersinwater.WatersampleswereenrichedbytheFloridasilica(Florisil)solidphasecolumn,with2mln-hexaneand5mLn-hexane:methylenechloride(V∶V=
7、8∶2)elution,TheanalyteswereseparatedonaHP-5capillarycolumnandanalysiswithGC/uECD.Theresultsshowthatinthreeaddedlevel(0.05、0.25、0.5μg/L),theaveragerecoveryof13PBDEsweredeterminedtobeintherangeof67.9%~121.5%,theRSDwere2.5%~12.3%,whilethatoftheBDE-209wasweredeterminedtobeintherangeof67
8、.9%~71.9%;theRSDwas
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