A portable multi-collector system based on an artificial optical compound eye for stand-off laser-induced breakdown spectroscopy,Journal of Analytical Atomic Spectrometry

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A portable multi-collector system based on an artificial optical compound eye for stand-off laser-induced breakdown spectroscopy
Journal of Analytical Atomic Spectrometry ( IF 3.1 ) Pub Date : 2017-08-23 00:00:00 , DOI: 10.1039/c7ja00173h
W. T. Li _{1,

2,

3,

4} , X. Y. Yang _{1,

2,

3,

4} , X. Li _{1,

2,

3,

4} , S. S. Tang _{1,

2,

3,

4} , J. M. Li _{1,

2,

3,

4} , R. X. Yi _{1,

2,

3,

4} , P. Yang _{1,

2,

3,

4} , Z. Q. Hao _{1,

2,

3,

4} , L. B. Guo _{1,

2,

3,

4} , X. Y. Li _{1,

2,

3,

4} , X. Y. Zeng _{1,

2,

3,

4} , Y. F. Lu _{1,

2,

3,

4}

Affiliation

Stand-off laser-induced breakdown spectroscopy (ST-LIBS) has attracted increasing attention as a valuable method for the remote analysis of materials. In this work, a multi-collector (MC) system combining low cost small lenses imitating the structure and shape of an artificial optical compound eye (AOCE) is presented to enhance the spectral intensity of ST-LIBS. The volume of the MC system is one eighteenth smaller than that of a telescope system and the number of collectors can be flexibly changed according to the requirements. The mechanisms of spectral enhancement are also discussed. In order to illustrate the performance of the MC system, the spectral intensities and the limits of detection (LoDs) of Mn and Cr elements acquired by the telescope system and the MC system were compared at a distance of 2 meters. The results showed that the spectral intensity acquired from the MC system was enhanced by 2.2 times, and the LoDs of Mn and Cr were decreased to 294 μg g⁻¹ and 49 μg g⁻¹. These results indicate that the MC system has great potential in providing a portable, flexible and effective collection method for remote detection.

中文翻译：

一种基于人造光学复眼的便携式多采集器系统，用于远距离激光诱导击穿光谱

支座激光诱导击穿光谱法（ST-LIBS）作为一种远程分析材料的有价值的方法已引起越来越多的关注。在这项工作中，提出了一种结合低成本小透镜的多收集器（MC）系统，该低成本小透镜模仿了人工光学复眼（AOCE）的结构和形状，以增强ST-LIBS的光谱强度。MC系统的体积比望远镜系统小十八分之多，并且可以根据需要灵活更改收集器的数量。还讨论了频谱增强的机制。为了说明MC系统的性能，在2米的距离处比较了由望远镜系统和MC系统获取的Mn和Cr元素的光谱强度和检出限（LoDs）。^-1和49μgg^-1。这些结果表明，MC系统在提供一种便携式，灵活且有效的远程检测收集方法方面具有巨大的潜力。

更新日期：2017-08-23

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