Determination of Mancozeb Residues in Vegetables by Head-Space Fourier Transform Infrared Spectroscopy

摘要：

　　Near-infrared spectroscopy(NIRS)is used to estimate Mancozeb residues in vegetables.In order to ensure high recognition rate and remove the disturbing factor in chlorophyll,headspace gas method was established to for determining Mancozeb residues.CS2 gas was generated with acid stannous chloride for 20mins in oven at 95℃.The infra-red absorption peaks of raw spectra at 1520cm-1 match well with each other.So,the wavenumber from 1504cm-1 to 1530cm-1 were selected for subsequent analysis after baseline correction method.Least Squares Support Vector Machines(LS_SVM)was used to establish a model to estimate Mancozeb residues.The results show that in this experiment the accuracy of Mancozeb residues can be believable when the Mancozeb residues content was more than 1.2mg/kg.

关键词： Near-infrared spectroscopy Numerical Analysis LS_SVM

作者: Liu Yanfeng

作者单位: Liaoning Vocational College,Tieling 112099,China

会议类型: 国际会议

会议名称: 2019 2nd International Conference on Mechanical Engineering, Industrial Materials and Industrial Electronics (MEIMIE 2019)2019年第二届机械工程、工业材料和工业电子国际会议(Meimie 2019)

会议地点: 大连

会议语种:英文

页码: 8-11

在线出版日期: 2019-03-29（万方平台首次上网日期，不代表论文的发表时间）