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ID:52006552
大小:1.36 MB
页数:9页
时间:2020-03-21
《复杂基质样品中邻苯二甲酸酯测定的样品前处理.pdf》由会员上传分享,免费在线阅读,更多相关内容在工程资料-天天文库。
1、20l4l1,j色语Vo1.32NO.1lNovember20l4ChineseJournalol。Chromatographyl242~l250研究论文DOI:l0.3724/SP.J.1I23.20I4.()7051摘要:埘小类型复尔质样品中邻苯}}I酸哺(PAEs)测定的处理疗法进仃r研究。待测样炎,包括沉物、I壤、悬浮颗粒物、地衷厥、牛物f[tgl、化妆品、皮革、料以及近岸/河I【海水等复杂基质样r这样品{1PAEs测定的最常川力‘法为e栩色谱一质潜法(GC—MS),钊刈该测定力‘法所的样前处婵研究集_Ilf待测PAEs的墩、净化等步骤操
2、作条件的确定。刈各种样品质丽处州‘法的研究结『求&}lJ】,二氯甲烷址进行陶液萃取时的超声振荡提取}}=f刹;而对符种杂质样品的净化,雌胶则足经济、川的相荦取填料;Cl8址最常川的近/flI『Lj海水样I^I1IPAEs的预富集填料;-定比例的JI烷乙酸乙酯混介溶液是适宜的Ⅲ卡If葶取洗脱液。优化实验条件下,各样一琏质中PAEs的Il标收卒高158%,办法相埘标准偏后(RSD)小下l0.5%(佗=6);方法刈}=『c币J{物样品巾PAEs的检iIj限(DL,3tr)坡低,0.3Izg/kg(邻苯甲簸J’酯)~5.2~g/kg(邻举I酸二片哺)之『
3、H】;埘近/'l"IIf海水样品的愉⋯(DI,3r,)征6ng/L(邻崔:甲敝晰)~67ng/L(邻举甲酸婶癸哺)之Ihj,能满足卜述各类复杂琏质样^·}lI6种PAEs测定的衙要关键词:C十I{色谱一质;邻苯甲酸I1i}{;复朵质;样品前处中图分类号:0658文献标识码:A文章编号:l000—8713(20l4)1l—l242—09Abstract:Samplepretreatmentmethodsforthenleasurementofphthalateesters(PAEs)bygaschromatography—nlassspectrom
4、etry(GC—MS)invariouscomplexmatrices,includingsedi—ment,soil,suspendedparticlematter,urbansurfacedust,SO00cZⅡCon8t~。icta,cosmet—ic.1eather.plasticandcoasta1/estuarineseawater.wereproposed.ThepretreatmentwhichwasappropriateforGC—MSdetectionwasfocusedontheinvestigationandoptimiz
5、ationofoper-atingparametersfortheextractionandpurification,suchastheextractionsolvent,theeluantandtheadsorbentofsolidphaseextraction.Theresultsofthestudyofpretreatmentforvariouscomplexmatricesshowedthatmethylenechloridewasthebestsolventfortheultrasonicextractionwhensolid—liqu
6、idextractionwasused;silicagelwastheeconomicalandpracticaladsorbentforsolid—phaseextractionforpurification:Cl8wasthemostconunonlyadsorbentforpreconcentration0fPAEincoastal/estuariBeseawatersample:themixedsolutionof一hexaneandethylacetatewithacertainproportionwasthesuitableSPEel
7、uent.Undertheoptimizedconditions.thespikedrecoverieswereabove58%andtherelativestandarddeviations(RSDs)werelessthanl0.5%(=6).Thedetectionlimits(DL,3r厂)wereintherangeof0.3Ixg/kg(dibutylphthalate)一5.2tzg/kg(diisononylphthalate)forsediment,and6ng/L(dipropyl$通讯联系人.Tel:(0592)218622
8、2,E—mail:zbgong@XlnUedu.cn基金项目:环保部环保公益性行业科研专项(20l309007);福建省“然科学基金重点
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