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Feasibility of using laser induced breakdown spectroscopy for quantitative measurement of calcium, magnesium, potassium and sodium in meat†
Journal of Analytical Atomic Spectrometry ( IF 3.1 ) Pub Date : 2018-06-08 00:00:00 , DOI: 10.1039/c8ja00115d Flavio O. Leme 1, 2, 3, 4, 5 , Daniel M. Silvestre 1, 2, 3, 4, 5 , Angerson N. Nascimento 5, 6, 7, 8 , Cassiana S. Nomura 1, 2, 3, 4, 5
Journal of Analytical Atomic Spectrometry ( IF 3.1 ) Pub Date : 2018-06-08 00:00:00 , DOI: 10.1039/c8ja00115d Flavio O. Leme 1, 2, 3, 4, 5 , Daniel M. Silvestre 1, 2, 3, 4, 5 , Angerson N. Nascimento 5, 6, 7, 8 , Cassiana S. Nomura 1, 2, 3, 4, 5
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The aim of this work is to demonstrate the potential of a commercial laser induced breakdown spectroscopy (LIBS) system for quantitative determination of calcium, magnesium, potassium and sodium in bovine and chicken meat. Bovine and chicken meat are important sources of nutrients in the human diet, and Brazil is one of the major producers and exporters in the world. Measurements were performed using a commercial LIBS system designed with a Q-switched laser (Nd:YAG, 10 Hz, λ = 266 nm) and a 6 channel-CCD spectrometer. Calibration standards were produced from a selected beef and chicken sample either diluted with high-purity cellulose or spiked with increasing amounts of standard solutions of analytes. After acid decomposition, inductively coupled plasma optical emission spectroscopy (ICP OES) was used to obtain the mass fraction of each analyte in calibration standards. The accuracy of the method was checked by analysis of certified reference materials and comparison of LIBS results with ICP OES data. By applying a t-test at the 95% confidence level, LIBS results and ICP OES data presented no significant differences. The metrological figures of merit indicate the potential of a commercial LIBS system for the intended purposes and can be recommended for the analysis of beef and chicken meat aiming at the determination of Ca, Mg, K and Na.
中文翻译：
使用激光诱导击穿光谱法定量测量肉中钙，镁，钾和钠的可行性†
这项工作的目的是证明商业激光诱导击穿光谱（LIBS）系统用于定量测定牛和鸡肉中钙，镁，钾和钠的潜力。牛和鸡肉是人类饮食中重要的营养物质来源，巴西是世界上主要的生产国和出口国之一。使用配备了Q开关激光器（Nd：YAG，10 Hz，λ= 266 nm）和6通道CCD光谱仪。校准标准是从选定的牛肉和鸡肉样品中制得的，这些样品要么用高纯度纤维素稀释，要么用越来越多的分析物标准溶液加标。酸分解后，使用电感耦合等离子体发射光谱（ICP OES）获得校准标准物中每种分析物的质量分数。该方法的准确性通过分析经认证的参考物质并将LIBS结果与ICP OES数据进行比较来检查。通过应用t-在95％置信水平下进行测试-LIBS结果和ICP OES数据均无显着差异。量度指标表明商用LIBS系统可用于预期目的，可以推荐用于分析牛肉和鸡肉，以测定Ca，Mg，K和Na。
更新日期：2018-06-08
中文翻译：
使用激光诱导击穿光谱法定量测量肉中钙，镁，钾和钠的可行性†
这项工作的目的是证明商业激光诱导击穿光谱（LIBS）系统用于定量测定牛和鸡肉中钙，镁，钾和钠的潜力。牛和鸡肉是人类饮食中重要的营养物质来源，巴西是世界上主要的生产国和出口国之一。使用配备了Q开关激光器（Nd：YAG，10 Hz，λ= 266 nm）和6通道CCD光谱仪。校准标准是从选定的牛肉和鸡肉样品中制得的，这些样品要么用高纯度纤维素稀释，要么用越来越多的分析物标准溶液加标。酸分解后，使用电感耦合等离子体发射光谱（ICP OES）获得校准标准物中每种分析物的质量分数。该方法的准确性通过分析经认证的参考物质并将LIBS结果与ICP OES数据进行比较来检查。通过应用t-在95％置信水平下进行测试-LIBS结果和ICP OES数据均无显着差异。量度指标表明商用LIBS系统可用于预期目的，可以推荐用于分析牛肉和鸡肉，以测定Ca，Mg，K和Na。
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