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时间:2020-04-20
《气相色谱-质谱联用法检测水性墙体涂料中20种邻苯二甲酸酯.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、第33卷第4期分析测试学报V0l_33No.42014年4月FENXICESHIXUEBAO(JournalofInstrumentalAnalysis)437~441doi:10.3969/j.issn.1004—4957.2014.04.012气相色谱一质谱联用法检测水性墙体涂料中20种邻苯二甲酸酯刘付建,冼燕萍,郭新东,翁乙斌,彭莺,陈纪文,卢宇靖(1.广东产品质量监督检验研究院,广东广州510330;2.广州市质量监督检测研究院,广东广州510110;3.广东工业大学轻工化工学院,广东广州510006)摘要:建立了一种检测水性墙体涂料中20种邻苯二甲酸酯的分散固相萃取净化(d-S
2、PE)/气相色谱一质谱联用(GC—MS)分析方法。样品经水分散,乙腈一叔丁基甲醚(9:1)提取后,以无水硫酸镁(MgSO)和N一丙基乙二胺(PSA)粉末分散固相萃取净化,GC—MS法测定,外标法定量。20种邻苯二甲酸酯在0.01—10ms/L范围内线性关系良好(r>0.99),方法的检出限(LOD)为0.07—1.40mg/kg,定量下限(LOQ)为0.3—4.7mg/kg,加标回收率为86.3%~115.3%,相对标准偏差(RSD,n=6)小于8%。该方法净化效果好、定量准确,适用于水性墙体涂料中2O种邻苯二甲酸酯的快速检测。关键词:邻苯二甲酸酯;水性墙体涂料;分散固相萃取;气相色谱一
3、质谱联用法中图分类号:0657.71;TQ414.1文献标识码:A文章编号:1004—4957(2014)04—0437—05DeterminationofTwentyPhthalicAcidEstersinWaterborneWallCoatingsbyGasChromatography—MassSpectrometryLIUFu-jian,XIANYan-ping,GUOXin—dong,WENGYi—bin,PENGring,CHENJi-wen‘,LUYu-jing(1.GuangdongTestingInstituteforProductQualitySupervision,G
4、uangzhou510330,China;2.GuangzhouQualitySupervisionandTestingInstitute,Guangzhou510110,China;3.SchoolofChemicalEngineeringandLightIndustry,GuangdongUniversityofTechnology,Guangzhou510006,China)Abstract:Amethodwasestablishedforthedeterminationof20phthalicacidesters(PAEs)inwater—bornewallcoatingsbyg
5、aschromatography—massspectrometry(GC—MS)afterdispersivesolidphaseextraction(d-SPE)cleanup.Thesamplesweredispersedwithwater,andstirreduniformly,thenex—tractedwithacetonitrile—methyltert—butylether(9:11.TheultimatesolutionwasdetectedbyGC—MSunderselectedionmonitoringmodeandquantifiedbytheexternalsta
6、ndardmethod.Thecalibra-tioncurvesof20PAEswerelinearintherangeof0.0i一10ms/Lwithcorrelationcoeficients(r)morethan0.99.Thelimitsofdetection(LODs)ofthemethodfortargetcompoundsrangedfrom0.07mg/kgto1.40mg/kg,andthelimitsofquantitationofthemethod(LOQs)variedfrom0.3ms/kgto4.7ms/kg.Themeanrecoveriesranged
7、from86.3%to115.3%withrelativestandardde-viations(RSDs)lessthan8%.Thismethodwassuitablefortheidentificationandquantificationof20PAEsinwaterbornewallcoatingsduetoitssimplicityandaccuracy.Keywords:phthalicacidesters;water
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