分析测试学报2025，Vol.44Issue(6)：1123-1130,8.DOI:10.12452/j.fxcsxb.25021691
基于便携式近红外光谱仪的鸡饲料中微塑料定性定量分析
Qualitative and Quantitative Analysis of Microplastics in Chicken Feed Based on Portable Near Infrared Spectrometer
摘要
Abstract
Rapid and low-cost detection tools provide new methods for the qualitative and quantita-tive analysis of microplastics(MPs)in chicken feed.In this study,a portable near infrared(NIR)spectrometer was used for qualitative and quantitative analysis of MPs-contaminated chicken feed sam-ples.A total of 244 chicken feed samples were prepared,including 61 non-contaminated chicken feed samples and 183 MPs-contaminated chicken feed samples(mass fraction range of 0.01%-0.8%)namely polypropylene(PP),polyvinyl chloride(PVC)and polyethylene terephthalate(PET),re-spectively.The NIR spectra of all samples were collected based on the portable NIR spectrometer(wavelength range,900-1 700 nm).1/3 of the samples were randomly selected as the prediction set,and the remaining 2/3 of the samples were used as the calibration set.The mathematical model for qualitative and quantitative analysis of MPs in chicken feed was developed using the partial least squares method.For the qualitative models:the model built by the multiple scattering treatment showed the best performance.The discrimination accuracies were 99.38%and 100%for the samples in the calibration and prediction sets,respectively.For quantitative partial least squares regression(PLSR)models:genetic algorithms(GA)showed significant advantages in wavelength selection for improving the prediction performance of the PLSR models for MPs in chicken feed.The GA-PLSR model predicted correlation coefficients(Rp)more than 0.873 7 and residual prediction deviation ra-tios(RPD)more than 2.709 0 for the three MPs.The results showed that it was feasible to analyze MPs in chicken feed by qualitative and quantitative analysis based on portable NIR spectroscopy.This study provides a low-cost and rapid method for the detection of MPs in feed.关键词
便携式近红外光谱仪/微塑料(MPs)/鸡饲料/化学计量学/定性定量分析Key words
portable near infrared spectrometer/microplastics(MPs)/chicken feed/chemomet-rics/qualitative and quantitative analysis分类
化学化工引用本文复制引用
刘一诺,霍正婷,杨仁杰,董桂梅,于亚萍,李留安..基于便携式近红外光谱仪的鸡饲料中微塑料定性定量分析[J].分析测试学报,2025,44(6):1123-1130,8.基金项目
国家自然科学基金资助项目(41771357,31201359) （41771357,31201359）
