显微⁃傅里叶变换红外光谱鉴别分析微塑料

Identification and Analysis of Microplastics by Micro Fourier Transform Infrared Spectroscopy

利用显微‐傅里叶变换红外光谱技术分析鉴别了不同粒径及不同种类的微塑料(粒径小于5 mm的塑料、纤维或橡胶碎片),系统阐述了反射、透射、衰减全反射3种测量模式及其微区成像技术在微塑料鉴别分析中的优缺点。基于显微‐傅里叶变换红外光谱衰减全反射技术,分析了北京景观水样中的微塑料,结果表明该方法简单、准确、可靠。

Micro Fourier‐transform infrared spectroscopy(micro‐FTIR)was used to analyze and identify microplastics with different particle sizes and different compositions.These microplastics include the plastic,fiber or rubber fragments with particle size less than 5 mm.The advantages and disadvantages of three measurement modes including reflection,transmission and attenuated total reflection and their scanning technologies in the identification and analysis of microplas‐tics were systematically described.Based on the attenuated total reflection technique of micro‐FTIR,the microplastic obtained from the Beijing landscape water were analyzed and identified.The results indicated that this method was sim‐ple,accurate and reliable.