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首页> 外文期刊>Journal of Analytical Atomic Spectrometry >Evaluation of laser induced breakdown spectroscopy in view of nickel and vanadium online determination in petroleum products
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Evaluation of laser induced breakdown spectroscopy in view of nickel and vanadium online determination in petroleum products

机译：石油产品中镍和钒在线测定的激光诱导击穿光谱法评估

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摘要

On-line nickel and vanadium determination in oil samples was proposed using laser induced breakdown spectroscopy to reach low mg kg~(-1)concentrations. Both 266 nm and 532 nm emissions of a neodymium YAG laser were evaluated and the visible wavelength gave better results. An original optimization strategy employing a Doelhert design and full quadratic model was carried out. The number of laser shots, the delay time, the integration time gate and the laser energy were selected as factors. Measurements were compared under static and dynamic conditions (i.e. the sample being moved at a cc h~(-1)flow rate as it is under the process conditions), and no significant difference in terms of sensitivity and detection limits was observed due to the viscous nature of oil samples. Detection limits achieved for vanadium were 7 mg kg~(-1)and 31 mg kg~(-1)for nickel. In view of on-line measurements a Czerny Turner spectrometer equipped with a photomultiplier was evaluated. Then, the LIBS method developed enabled the plot of linear calibration curves for Ni and V with a sensitivity in agreement with the need of the petroleum industry for on-line determination.
机译：提出了使用激光诱导击穿光谱法测定油样中镍和钒的在线方法，以达到低mg kg〜（-1）浓度。评估了钕YAG激光器的266 nm和532 nm发射，可见波长给出了更好的结果。进行了采用Doelhert设计和完整二次模型的原始优化策略。选择激光束的数量，延迟时间，积分时间门和激光能量作为因素。在静态和动态条件下（即样品以cc h〜（-1）流速在过程条件下移动）对测量进行了比较，并且由于灵敏度和检测限的差异，未观察到明显差异。油样的粘性性质。钒的检出限为7 mg kg〜（-1），镍的检出限为31 mg kg〜（-1）。考虑到在线测量，对配备有光电倍增管的切尔尼·特纳光谱仪进行了评估。然后，开发出的LIBS方法可以绘制出镍和钒的线性校准曲线，其灵敏度与石油工业在线确定的需求相一致。

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  • 来源
    《Journal of Analytical Atomic Spectrometry》 |2016年第3期|712-721|共10页
  • 作者

    F. Trichard; N. Gilon; C. P. Lienemann; F. Baco-Antoniali;

  • 作者单位

    Institut des Sciences Analytiques, UMR 5280, Universite Claude Bernard Lyon1/CNRS/ENS, Lyon, France;

    Institut des Sciences Analytiques, UMR 5280, Universite Claude Bernard Lyon1/CNRS/ENS, Lyon, France;

    IFPEnergies nouvelles, Rond Point de l'echangeur de Solaize, BP 3, 69360 Solaize, France;

    IFPEnergies nouvelles, Rond Point de l'echangeur de Solaize, BP 3, 69360 Solaize, France;

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