基于红外光谱成像技术的环境微塑料检测研究

Study on Microplastic Detection with Infrared Spectral Imaging System

基于红外光谱成像技术提出一种微塑料检测方法,通过对泥土中的微塑料颗粒进行分离和提取,在红外光谱仪中进行光谱采集和分类。通过比对分类后红外光谱的吸收峰强度和数量,完成对微塑料颗粒的检测。测量k邻近分类结果的准确率和敏感度,使用ROC图对分类表现进行具体分析。研究结果表明:基于红外光谱成像的微塑料检测方法对环境中微塑料颗粒物的检测准确率超过89%。同时,系统具有高灵敏度、良好的鲁棒性等特点。研究结果对环境微塑料颗粒的快速检测技术的发展和应用具有一定的指导意义。

A microplastics detection method is proposed based on infrared spectroscopy imaging technology.The method separates and extracts microplastics particles in the soil,and performs spectrum collection and classification in an infrared spectrometer.The detection of microplastic particles is completed by comparing the intensity and number of absorption peaks of the infrared spectrum after classification.Measure the accuracy and sensitivity of the k-neighbor classification results,and use the ROC diagram to analyze the classification performance.The research results show that the detection method of microplastics based on infrared spectroscopy imaging can detect microplastics particles in the environment with an accuracy of over 89%.At the same time,the system has the characteristics of high sensitivity and good robustness.The research results have certain guiding significance for the development and application of rapid detection technology of environmental microplastic particles.