样品制备方法对LIBS检测饲料中铜含量的影响
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摘要
通过利用共轴双脉冲激光诱导击穿光谱(DP-LIBS)检测猪饲料中的重金属铜(Cu)含量,对硫酸铜固体混合添加法和硫酸铜溶液混合添加法制得的含铜猪饲料样品进行对比研究。通过对比,硫酸铜固体混合添加法和硫酸铜溶液混合添加法LIBS线性拟合相关系数分别为0.9718,0.9946,同浓度相对标准偏差(RSD)均低于3%、预测平均相对误差分别为8.5%,6.1%。硫酸铜溶液混合添加法制得样品较硫酸铜固体混合添加法检测效果较好,但是硫酸铜固体混合方法就能满足检测要求,可以将其应用于实际生产的在线检测中。
This study used coaxial double pulse laser induced breakdown spectroscopy(DP-LIBS) to detect copper content in pig feed and compared Cu content in different pig feeds prepared by copper sulfate solid mixed method and copper sulfate solution mixed method.By contrast,linear fitting correlation coefficient for copper sulfate solid mixed method and copper sulfate solution mixed method were 0.9718 and 0.9946,respectively and the relative standard deviations(Relative Standard,Deviation,RSD) were lower than 3%,and the average relative error of prediction were 8.5% and 6.1%,respectively.Copper sulfate solution mixed samples had a better detection results than copper sulfate solid mixed ones,which could also meet the test requirements,and can be applied to the online detection of actual production.
This study used coaxial double pulse laser induced breakdown spectroscopy(DP-LIBS) to detect copper content in pig feed and compared Cu content in different pig feeds prepared by copper sulfate solid mixed method and copper sulfate solution mixed method.By contrast,linear fitting correlation coefficient for copper sulfate solid mixed method and copper sulfate solution mixed method were 0.9718 and 0.9946,respectively and the relative standard deviations(Relative Standard,Deviation,RSD) were lower than 3%,and the average relative error of prediction were 8.5% and 6.1%,respectively.Copper sulfate solution mixed samples had a better detection results than copper sulfate solid mixed ones,which could also meet the test requirements,and can be applied to the online detection of actual production.
引文
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[3]Shi Y.Feed Industry,2014,35(1):62施尧.饲料工业,2014,35(1):62
[4]Bai Y J.Mod.J.Anim.Husbandry Veterinary Med.,2010(3):55柏云江.现代畜牧兽医,2010(3):55
[5]Hahn D W,Omenetto N.Appl Spectrosc,2010,64(12):335A
[6]Hahn D W,Omenetto N.Appl Spectrosc,2012,66(4):347
[7]Shen G H,Li H C,Shi Y H.Metall Anal,2016,36(5):16沈桂华,李华昌,史烨弘.冶金分析,2016,36(5):16
[8]Chen J Z,Bai J Ng,Song G J,et al.Infrared Laser Eng,2013,42(4):947陈金忠,白津宁,宋广聚,等.红外与激光工程,2013,42(4):947
[9]Fang X,Ahmad S R.Appl Phys B,2014,115(4):497
[10]Gondal MA,Shemis MA,Gondal B,et al.J Med Bioeng,2016,5(2)
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[15]Zhang D Z,Liu Y Y.Pigs Today,2014(11):44张道中,刘元英.今日养猪业,2014(11):44
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