基于激光诱导击穿光谱技术分析鳕鱼中8 种元素含量

doi:10.7506/spkx1002-6630-20190821-222

食品科学 ›› 2020, Vol. 41 ›› Issue (14): 247-254.doi: 10.7506/spkx1002-6630-20190821-222

基于激光诱导击穿光谱技术分析鳕鱼中8 种元素含量

林雨青，田野，陈倩，李颖，林洪

（1.中国海洋大学食品科学与工程学院，山东青岛 266003；2.中国海洋大学信息科学与工程学院，山东青岛 266100）

发布日期:2020-07-29
基金资助:
现代农业产业技术体系建设专项（CARS-47）

Analysis of Eight Elements in Cod by Laser Induced Breakdown Spectroscopy

LIN Yuqing, TIAN Ye, CHEN Qian, LI Ying, LIN Hong

(1. College of Food Science and Engineering, Ocean University of China, Qingdao 266003, China;2. College of Information Science and Engineering, Ocean University of China, Qingdao 266100, China)

Published:2020-07-29

摘要/Abstract

摘要： 应用激光诱导击穿光谱（laser induced breakdown spectroscopy，LIBS）技术结合单变量定标法、内定标法和偏最小二乘（partial least square，PLS）法对鳕鱼中的P、Fe、Al、Mn、K、Mg、Ca、Na共8 种元素进行同时定量分析。制备鳕鱼标准系列，采用电感耦合等离子体发射光谱提供各元素含量的参考值。对鱼肉样品进行压片处理，采集其LIBS光谱，选取各元素特征谱线，并对单变量定标、内定标与PLS 3 种定量方法进行比较。结果表明，PLS法优于传统的单变量定标法和内定标法，具有较高的预测准确度和精度，对各元素预测含量的相对误差范围在0.96%～13.27%之间，相对标准偏差范围在2.02%～7.55%之间。结果表明LIBS技术在鳕鱼中多种元素的快速、非定向检测方面具有很大的应用潜力，并可以推广至水产品的快速检测分析，同时为今后开发便携式LIBS水产品检测仪器提供理论依据。

关键词: 激光诱导击穿光谱；鳕鱼；偏最小二乘法；多元素；同时探测

Abstract: In this study, laser induced breakdown spectroscopy (LIBS) combined with univariate calibration, internal calibration and partial least square (PLS) was used for simultaneous quantitative analysis of P, Fe, Al, Mn, K, Mg, Ca and Na in cod samples. A series of cod standard samples with different concentrations of these elements were prepared, and reference values for each element concentration were determined by inductively coupled plasma atomic emission spectroscopy (ICP-OES). The cod samples were compressed into tablets and their LIBS spectra were collected. The characteristic spectral lines were selected for each element, and the three quantitative methods of univariate calibration, internal calibration and PLS were compared. The results showed that PLS was superior to traditional univariate calibration and internal calibration, and had higher prediction accuracy and precision. The relative error (RE) of the predicted concentration ranged from 0.96% to 13.27%, and the relative standard deviation (RSD) ranged from 2.02% to 7.55%. This work showed that LIBS had great potential in the rapid and non-directional detection of various elements in cod and even other aquatic products, and could lay a foundation for the development of a portable LIBS device for multi-element analysis of aquatic products in the future.

Key words: laser induced breakdown spectroscopy; cod; partial least squares; multi-element; simultaneous detection

中图分类号:

TS254.7

林雨青，田野，陈倩，李颖，林洪. 基于激光诱导击穿光谱技术分析鳕鱼中8 种元素含量[J]. 食品科学, 2020, 41(14): 247-254.

LIN Yuqing, TIAN Ye, CHEN Qian, LI Ying, LIN Hong. Analysis of Eight Elements in Cod by Laser Induced Breakdown Spectroscopy[J]. FOOD SCIENCE, 2020, 41(14): 247-254.

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基于激光诱导击穿光谱技术分析鳕鱼中8 种元素含量

Analysis of Eight Elements in Cod by Laser Induced Breakdown Spectroscopy

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