塑料科技2025，Vol.53Issue(6)：139-143,5.DOI:10.15925/j.cnki.issn1005-3360.2025.06.024
基于HS-GC-MS结合化学计量学对原生和再生聚丙烯的鉴别
Identification of Virgin and Recycled Polypropylene Based on HS-GC-MS Combined with Chemometrics
摘要
Abstract
In order to establish a rapid and effective method or model for discriminating virgin materials from recycled materials,headspace gas chromatography-mass spectrometry(HS-GC-MS),MSDIAL software,the NIST mass spectral library,and retention indices were employed to screen volatile compounds in virgin polypropylene(VPP)and recycled polypropylene(RPP).Among the 72 samples of virgin and recycled materials,a total of 257 volatile compounds were preliminarily identified,including hydrocarbons,additives,contaminants,and other impurities.It was found that the content of hydrocarbons in virgin samples was significantly higher than that in recycled samples,making them the primary volatile components in VPP.Various chemometric methods,including principal component analysis(PCA),orthogonal partial least square discriminant analysis(OPLS-DA),and linear discriminant analysis(LDA),were used to model the relevant compounds,all of which successfully achieved good discrimination between virgin and recycled PP.关键词
再生塑料/化学计量学/顶空气相色谱质谱联用/鉴别/差异性物质Key words
Recycled plastics/Chemometrics/Headspace gas chromatography with mass spectrometry/Differential/Differential substances分类
轻工业引用本文复制引用
董梓雯,林勤保,谢琰灵..基于HS-GC-MS结合化学计量学对原生和再生聚丙烯的鉴别[J].塑料科技,2025,53(6):139-143,5.基金项目
国家重点研发计划项目(2022YFF0607202) （2022YFF0607202）
