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首页> 外文期刊>Analytica chimica acta >Determination of rare earth element in carbonate using laser-ablation inductively-coupled plasma mass spectrometry:An examination of the influence of the matrix on laser-ablation inductively-coupled plasma mass spectrometry analysis
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Determination of rare earth element in carbonate using laser-ablation inductively-coupled plasma mass spectrometry:An examination of the influence of the matrix on laser-ablation inductively-coupled plasma mass spectrometry analysis

机译：激光烧蚀电感耦合等离子体质谱法测定碳酸盐中的稀土元素：研究基质对激光烧蚀电感耦合等离子体质谱法的影响

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摘要

In this study,we examined the influence of the matrix on rare earth element (REE) analyses of carbonate with laser-ablation inductively-coupled plasma mass spectrometry (LA-ICP-MS) using carbonate and NIST glass standards.A UV 213 run Nd:YAG laser system was coupled to an ICP-MS.Laser-ablation was carried out in both He and Ar atmospheres to investigate the influence of ablation gas on the analytical results.A small amount of N2 gas was added to the carrier gas to enhance the signal intensities.Synthetic CaCO3 standards,doped with REEs,as well as NIST glasses (NIST SRM 610 and 612) were used as calibration standards.Carbonatite,which is composed of pure calcite,was analyzed as carbonate samples.The degree of the influence of the matrix on the results was evaluated by comparing the results,which were calibrated by the synthetic CaCO3 and NIST glass standards.With laser-ablation in a He atmosphere,the differences between the results calibrated by the synthetic CaCO3 and NIST glass standards were less than 10% across the REE series,except for those of La which were 25%.In contrast,for the measurements made in an Ar atmosphere,the results calibrated by the synthetic CaCO3 and NIST glass standards differed by 25-40%.It was demonstrated that the LA-ICP-MS system can provide quantitative analysis of REE concentrations in carbonate samples using non matrix-matched standards of NIST glasses.
机译：在这项研究中，我们使用碳酸盐和NIST玻璃标准品，通过激光烧蚀电感耦合等离子体质谱（LA-ICP-MS）研究了基质对碳酸盐中稀土元素（REE）分析的影响。UV213运行Nd ：YAG激光系统与ICP-MS耦合，在He和Ar气氛中进行激光烧蚀，以研究烧蚀气体对分析结果的影响，在载气中加入少量N2气体以增强以掺有REE的合成CaCO3标样以及NIST玻璃（NIST SRM 610和612）作为校准标样。分析了由纯方解石组成的碳酸盐作为碳酸盐样品。通过比较结果来评估基体对结果的影响，并用合成的CaCO3和NIST玻璃标准品校准。通过在He气氛中进行激光烧蚀，可以用合成的CaCO3和NIST玻璃标准品校准结果之间的差异。整个REE系列的rds都小于10％，而La的rds则为25％。相比之下，对于在Ar气氛中进行的测量，合成的CaCO3和NIST玻璃标准品校准的结果相差25-40％事实证明，使用非基质匹配的NIST玻璃标准品，LA-ICP-MS系统可以对碳酸盐样品中的REE浓度进行定量分析。

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