便携式激光诱导击穿光谱最新研究进展

曾庆栋; 袁梦甜; 朱志恒; 陈光辉; 汪婕; 余华清; 郭连波; 李祥友

doi:10.37188/CO.2020-0093

便携式激光诱导击穿光谱最新研究进展

doi: 10.37188/CO.2020-0093

曾庆栋^{1, 2, ,},
袁梦甜^{1, 3,},
朱志恒¹,
陈光辉^{1, 3},
汪婕⁴,
余华清¹,
郭连波²,
李祥友²

1.
湖北工程学院物理与电子信息工程学院，湖北孝感 432000
2.
华中科技大学武汉光电国家研究中心，武汉 430074
3.
湖北大学物理与电子科学学院，武汉 430062
4.
湖北省计量测试技术研究院，武汉 430223

基金项目: 国家重大科学仪器设备开发专项（No. 2011YQ160017）；国家自然科学基金项目（No. 61705064，No. 11647122）；湖北省自然科学基金项目（No. 2018CFB773），湖北省教育厅团队研究项目（T201617）

详细信息

作者简介:
曾庆栋（1982—），男，湖北广水人，博士，副教授，2016年于华中科技大学获得博士学位，主要从事便携式激光诱导击穿光谱的研究与开发、光谱信号处理与算法研究等方面的工作。E-mail：jerry-z@hbeu.edu.cn

袁梦甜（1996—），女，湖北孝感人，湖北工程学院与湖北大学联合培养硕士研究生，主要从事激光诱导击穿光谱、光谱分析及光谱信号处理算法的研究。E-mail：921290877@qq.com

中图分类号: O433.4
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出版历程

Research progress on portable laser-induced breakdown spectroscopy

1.
School of Physics and Electronic-information Engineering, Hubei Engineering University, Xiaogan 432000, China
2.
Wuhan National Laboratory for Optoelectronics (WNLO), Huazhong University of Science and Technology, Wuhan 430074, China
3.
Faculty of Physics and Electronic Sciences, Hubei University, Wuhan 430062, China
4.
Hubei Institute of Measurement and Testing Technology, Wuhan 430223, China

Funds: Supported by National Special Fund for the Development of Major Research Equipment and Instruments (2011YQ160017); National Natural Science Foundation of China (No. 61705064 & 11647122); Natural Science Foundation of Hubei Province (No. 2018CFB773); Project of the Hubei Provincial Department of Education (No. T201617)

More Information

Corresponding author: jerry-z@hbeu.edu.cn

摘要

摘要: 作为一种新型快速的物质成分分析技术，激光诱导击穿光谱（laser-induced breakdown spectroscopy, LIBS）已经在越来越多的工业领域中被证明具有巨大的应用潜力。然而，由于野外作业或工业现场嘈杂恶劣检测环境的存在，对仪器设备的大小尺寸和抗恶劣环境的能力提出了新的更高的要求。近年来，新型的激光器的发展进一步促进了LIBS仪器化的进程，使得其逐渐从实验室迈向工业应用，同时也使得LIBS系统逐渐趋于仪器化、专业化、便携化。本文综述了便携式LIBS的发展历程，对各种激光光源（小型Nd: YAG固体激光器、二极管泵浦固体激光器、微片激光器、光纤激光器以及光纤传能的方案）应用于便携式LIBS系统的最新研究进展进行了综述和分类讨论，探讨了当前便携式LIBS存在的基本问题，并对其未来发展趋势进行了展望。
- 激光诱导击穿光谱 /
- 便携式 /
- 激光器 /
- 元素检测 /
- 进展
Abstract: As a new rapid element analysis technique, laser-induced breakdown spectroscopy (LIBS) has proven iteself to have great potential for applications in increasingly numerous industrial fields. However, due to harsh outdoor and industrial environments, newer and higher requirements are being demanded of the LIBS system, such as the size of its instruments and the ability to resist a harsh environment. The rapid development of new laser technology promotes instrumentation for LIBS, allowing it to gradually step outside the laboratory and into the industry, and allows the LIBS system to gradually move towards instrumentation, miniaturization and portability.In this paper, the development of a portable LIBS that was developed in recent years was reviewed. The application and latest research progress of different kinds of laser source (small lamp pumped solid-state laser, diode pump solid-state laser and micro laser, fiber laser) applied to the portable LIBS system were summarized and discussed, providing insight into both the fiber optic LIBS (FO-LIBS) and the handheld LIBS. In addition, the basic problems of current portable LIBS and the prospects of its future were proposed and discussed.
- laser-induced breakdown spectroscopy /
- portable /
- laser /
- element detection /
- progress

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图 1 激光诱导击穿光谱系统原理图

Figure 1. Schematic of laser-induced breakdown spectroscopy

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图 2 世界上第一台便携式LIBS系统(Nd: YAG, 1064 nm, 15~20 mJ/pulse, 4~8 ns)^[19]

Figure 2. The first portable LIBS system in the world (Nd: YAG, 1064 nm, 15~20 mJ/pulse, 4~8 ns)^[19]

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图 3 Laserna等人研发的两种便携式LIBS设备：（a）箱式（Nd: YAG, 1064 nm, 50 mJ/pulse, 6.5 ns）^[26], （b）背包式（Nd: YAG, 1064 nm, 50 mJ/pulse, 10 ns）^[27]

Figure 3. Two types of portable LIBS equipment developed by Laserna et al. : (a) a box type (Nd: YAG, 1064 nm, 50 mJ/pulse, 6.5 ns)^[26], (b) a backpack type (Nd: YAG, 1064 nm, 50 mJ/pulse, 10 ns)^[27]

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图 4 SECOPTA公司生产的FiberLIBS（总体积：44.9×52×17.7 cm³，探测头：35.5×16.5×10 cm³，1 kg）^[42]

Figure 4. FiberLIBS produced by SECOPTA (total volume: 44.9 × 52 × 17.7 cm³, probe head: 35.5 × 16.5 × 10 cm³, 1 kg)^[42]

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图 5 华中科技大学曾晓雁、李祥友等人研制的便携式LIBS样机

Figure 5. The portable LIBS system prototype developed by Xiaoyan Zeng and Xiangyou Li et al. in Huazhong University of Science and Technology

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图 6 光纤激光器实物图

Figure 6. Picture of fiber laser

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图 7 Gravel等人采用光纤激光器和紧凑型光谱仪搭建的LIBS系统^[51]

Figure 7. The LIBS system developed by Gravel et al. using a fiber laser and a compact spectrometer^[51]

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图 8 德国Noll等人开发的移动式LIBS系统^[52]

Figure 8. The mobile LIBS system developed by Noll et al. in Germany^[52]

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图 9 华中科技大学曾庆栋、李祥友等人采用光纤激光器搭建的便携式LIBS系统^{[53, 54]}

Figure 9. The portable LIBS system using a fiber laser developed by Qingdong Zeng and Xiangyou Li et al. in Huazhong University of Science and Technology^{[53, 54]}

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图 10 Whitehouse等人设计的FO-LIBS原理图^[57]

Figure 10. Schematic of FO-LIBS developed by Whitehouse et al.^[57]

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图 11 华中科技大学曾庆栋、李祥友等人研制的光纤传能移动式LIBS

Figure 11. The mobile LIBS developed by Qingdong Zeng and Xiangyou Li et al. in Huazhong University of Science and Technology

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图 12 英国牛津mPulse手持式LIBS合金分析仪^[62]

Figure 12. The mPulse handheld LIBS alloy analyzer, Oxford, UK^[62]

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图 13 美国Rigaku公司型号为KT-100S的手持式LIBS分析仪^[63]

Figure 13. Kt-100s handheld LIBS analyzer from Rigaku, USA^[63]

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图 14 四川大学段忆翔教授等人研发的手持式LIBS^[64]

Figure 14. The handheld LIBS developed by Yixiang Duan et al. in Sichuan University^[64]

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图 15 必达泰克公司的手持式μ-LIBS分析仪^[66]

Figure 15. The handheld μ-LIBS instrument of B&W Tek, Inc.^[66]

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表 1 基于DPSS激光器、光纤激光器和光纤传能的便携式LIBS的比较

Table 1. The comparison of several kinds of LIBS systems based on a DPSS laser, a fiber laser and FO-LIBS

激光器	优点	缺点	分析性能	适用领域
DPSS激光器	工作寿命长、功耗低、自然冷却、小巧便携	能量较低、谱线波动性较大	生铁中Mn、V、Ti和Cr元素的LOD分别为171 ppm、128 ppm、99 ppm和 59 ppm，R²分别为0.994、0.996、 0.994和0.991^[2]	手持式野外测量、电池供电、原位测量
光纤激光器	抗恶劣环境、体积小、价格便宜	连续背景干扰、烧蚀坑深，破坏性较大	铝基中Mg的LOD为1.1 ug/g，R²=0.994；黄铜中Ni的LOD为21.3 ug/g，R²=0.997^[51]；生铁中的Mn、V，Si的LOD分别为195、48和110 ppm, R²分别为0.997、0.991和0.992^[53]	工厂、矿山等恶劣工作环境，在线测量
光纤传能	避免复杂光路系统和外界干扰、降低自吸收效应	能量低，LOD较差	生铁中Mn和Ti元素LOD分别为1219, 257 ppm，R²分别为0.997，0.998^[60]	在线、原位测量，移动式测量

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表 2 几种手持式LIBS的参数比较

Table 2. Parameter comparison of several handheld LIBS

型号	研发单位	激光光源	体积、重量	参数及性能
LEA Handheld LIBS^[61]	芬兰Lasersec Systems公司	DPSS激光器	22.6×9×29 cm³, 1.75 kg	平均功率0.5 W，光谱范围220~400 nm，续航2小时，LOD可达到ppm级，可用于爆炸物、金属、食品与药品分类。
MPulse^[62]	英国牛津公司	准连续固体调Q激光器	9×23×21 cm³, 1.8 kg	频率4 kHz，峰值功率小于0.5 W，电池支持250次测试，可用于合金鉴别与金属分拣。
高能手持式LIBS^[64]	四川大学	被动调Q的Nd: YAG 激光器	33×11×32 cm³, 2.95 kg	单脉冲能量达100 mJ，光谱范围220~397 nm，可元素定量测定，岩屑岩性识别等。
KT-100S^[63]	美国Rigaku公司	波长1064 nm的3B级激光器	24.3×8.4×25.7 cm³, 1.5 kg	光谱范围200~480 nm，分辨率小于0.2 nm，电池供电10小时，可用于样品分类。
ChemLite^[65]	美国TSI公司	波长1574 nm的人眼安全激光器	30.5×25.4×10.2 cm³,2.4 kg	1574 nm人眼安全波长，光谱范围200~700 nm，一次充电支持1300次检测，探测范围低至0.01%。
μ-LIBS^[66]	必达泰克公司	DPSS激光器	27.9×8.9×27.9 cm³,1.8 kg	最大输出功率200 mW，脉宽小于1 ns,脉冲频率2 kHz，波长范围185~680 nm,分辨率0.4 nm。
z-200c+手持式LIBS 分析仪^[67]	SciAps公司	波长1064 nm的Nd: YAG激光器	21×30×12 cm³, 1.82 kg	脉宽1~2 ns，单脉冲能量5.5 mJ，重复频率50 Hz，光谱范围190~620 nm，用于原位分析钢中C含量。

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