手持式差分拉曼光谱检验塑料吸管的研究  

Research on the Inspection of Plastic Straws by Portable Differential Raman Spectroscopy

作　　者：姜红 康瑞雪 JIANG Hong;KANG Ruixue(Criminal Investigation Department,Gansu Police College,Lanzhou 730046,China)

机构地区：[1]甘肃警察学院刑事侦查系,兰州730046

出　　处：《上海塑料》2024年第3期51-54,共4页Shanghai Plastics

基　　金：甘肃省省级人才项目(甘组通字[2024]4号);食品药品安全防范山西省重点实验室开放课题(202204010931006)。

摘　　要：建立了一种简便快捷、无损的检验塑料吸管的分析方法。利用手持式差分拉曼光谱仪,在激光波长为785 nm、激光功率为400 mW、积分时间为2 s、扫描范围为200~2400 cm^(-1)的条件下,对收集到的53个塑料吸管样品进行检验分析。先根据样品的透明度将53个样品分为三类;再根据所含填料的不同,对每类样品分组;随后对同一组的样品根据相对峰高比进行区分。利用该方法可以将塑料吸管样品进行区分,该方法操作简便快速,无损样品,可用于鉴定塑料吸管类物证。A simple,fast and non-destructive analysis method for testing plastic straws is established.A portable differential Raman spectrometer is employed to examine and analyze samples of 53 plastic straws under the following conditions:laser wavelength of 785 nm,laser power at 400 mW,an integration time of 2 s,and a scanning range from 200 to 2400 cm^(-1).Initially,the 53 samples are classified into three distinct categories according to their transparency levels.Subsequently,each category is further subdivided into groups based on the type of filler.Ultimately,the samples within each group are distinguished by their relative peak height ratios.This method can be employed to differentiate plastic straw samples.It is characterized by its simplicity,rapidity,non-destructive nature towards the sample,and its applicability in identifying forensic evidence related to plastic straws.

关 键 词：手持式差分拉曼光谱 塑料吸管 透明度 填料 

分 类 号：O657.37[理学—分析化学] D918.2[理学—化学]