食品工业科技2017，Vol.38Issue(23)：198-202,209,6.DOI:10.13386/j.issn1002-0306.2017.23.037
猪饲料中Cu元素的双脉冲激光诱导击穿光谱检测技术研究
Detection of Cu element in pig feed by double pulse laser induced breakdown spectroscopy
摘要
Abstract
Double pulse laser-induced breakdown spectroscopy (LIBS) technique for the determination of Cu in pig feed was studied in this paper.Combined with orthogonal design,parameters optimization of Cu in pig feed samples,LIBS test was carried out.According to the sum of the indexes in the visual analysis of the orthogonal experiment,the best experimental parameters were obtained.The laser energy of A was 157.77 mJ and B was 196.87 mJ.And the delay time of laser was 450 ns and gathering was 1.28 μs.Based on partial least squares(PLS),the influence of different points smoothing and various pretreatment methods to the PLS model prediction effect were compared.Finally,the combination of 9 point smoothing pretreatment could effectively reduce the noise signal.It could improve the accuracy of PLS model for analyzing LIBS spectral data.Model predictions were as follows:correlation coefficient (r),root mean square error of prediction (RMSEP)and average relative error (ARE)were 0.9879,15.10,8.24 ％,respectively.关键词
激光诱导击穿光谱/猪饲料/铜元素/PLSKey words
laser induced breakdown spectroscopy/pig feed/copper element/PLS分类
轻工纺织引用本文复制引用
刘珊珊,张俊,林思寒,刘木华,赖曲芳,万仁杰,黎静,梅宇..猪饲料中Cu元素的双脉冲激光诱导击穿光谱检测技术研究[J].食品工业科技,2017,38(23):198-202,209,6.基金项目
国家自然科学基金项目(31460419) （31460419）
猪饲料中高铜的激光诱导击穿光谱快速检测技术研究(GJJ160369)和赣鄱英才555工程. （GJJ160369）
