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Comparison study of two commercial spectrometers for heavy metal analysis of laser induced breakdown spectroscopy (LIBS)

机译：两种商用光谱仪对激光诱导击穿光谱法（LIBS）的重金属分析的比较研究

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The purpose of this paper is to compare the performance of two spectrometers that are manufactured from the same company. In this work, heavy metals like lead Pb and copper Cu in the KBr matrix were analyzed using the laser induced breakdown spectroscopic technique. A Q-switched Nd:YAG laser with 90 mJ per pulse operating at the fundamental wavelength of 1064 nm and pulse duration of 10 ns was used to generate plasma at the focal region. The important experimental parameters such as the laser energy, integration time, distance between the lens and sample, distance and angle of the optical fiber from the target were optimized. Two spectrometers manufactured by Ocean Optics namely as Maya2000Pro and USB 4000 were employed for anlyzing the spectral lines. The experimental setup and conditions were remained the same for both experiments. The production of spectral lines from each of the interested elements was analyzed and compared with the NIST (National Institute of Standards and Technology) database. The sensitivity, repeatability and limit of detection for each of the systems are discussed in detail.
机译：本文的目的是比较同一家公司生产的两种光谱仪的性能。在这项工作中，使用激光诱导击穿光谱技术分析了KBr基体中的重金属，如铅Pb和铜Cu。使用Q开关Nd：YAG激光器，每脉冲90 mJ，在1064 nm的基本波长和10 ns的脉冲持续时间下工作，以在焦点区域生成等离子体。优化了重要的实验参数，例如激光能量，积分时间，透镜与样品之间的距离，光纤与目标的距离和角度。使用海洋光学公司制造的两个光谱仪Maya2000Pro和USB 4000来分析光谱线。对于两个实验，实验设置和条件保持相同。分析了每个感兴趣元素的光谱线，并与NIST（美国国家标准技术研究院）数据库进行了比较。详细讨论了每个系统的灵敏度，可重复性和检测极限。

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