聚苯乙烯拉曼频移标准物质的研制  

Development of Polystyrene Raman Shift Reference Material

作　　者：姚雅萱[1] 张景基 王苗苗 任玲玲[1] YAO Yaxuan;ZHANG Jingji;WANG Miaomiao;REN Lingling(National Institute of Metrology,Beijing 100029,China;China Jiliang University,Hangzhou 310018,China)

机构地区：[1]中国计量科学研究院,北京100029 [2]中国计量大学,杭州310018

出　　处：《计量科学与技术》2021年第1期55-60,共6页Metrology Science and Technology

基　　金：国家重点研发计划(2016YFF0204300);中国计量科学研究院基本科研业务费(AKYZD1805)。

摘　　要：拉曼频移常用于揭示物质的组成成分、晶型结构、应力应变等内在信息,因此拉曼频移的校准对拉曼光谱的定性及半定量分析十分重要。研制了聚苯乙烯拉曼频移标准物质,可用于拉曼光谱仪频移的校准,解决不同拉曼光谱仪测试结果缺乏可比性的问题。研制的标准物质经检验,具有良好的均匀性和稳定性。使用可溯源至光谱辐射照度国家基准的激光共聚焦拉曼光谱校准装置(2015国计第289号)为标准物质定值,定值结果准确可靠。定值后标准物质的扩展不确定度U≤2.5cm~(-1)(k=2)。与美国ASTM E 1840标准和中国计量科学研究院前期发布的萘拉曼频移标准物质(GBW13652)相比,测量结果等效、一致。Raman shift is commonly used to reveal the internal information of materials,such as composition,crystal structure,stress,and strain.Therefore,the calibration of Raman shift is essential for qualitative and semi-quantitative analysis.In this paper,polystyrene Raman shift reference material has been developed,which can be used for Raman shift calibration,ensuring reliable and consistent test results.The homogeneity and stability of this reference material were examined.The results indicated that this standard reference material is homogeneous and the stated values are valid for one year.A metrological standard has been used for the value determination of the reference material,which can be traced to the national standard of spectral irradiance.The expanded uncertainty of reference material is U≤2.5 cm-1(k=2).The measurement results were equivalent and consistent compared with the ASTM E 1840 standard and the naphthalene Raman shift standard(GBW13652).

关 键 词：拉曼频移 聚苯乙烯 标准物质 不确定度 均匀性检验 稳定性检验 

分 类 号：TQ325.2[化学工程—合成树脂塑料工业] O657.37[理学—分析化学] TQ421.31[理学—化学]