激光与光电子学进展, 2019, 56 (2): 023002, 网络出版: 2019-08-01 复制并引用该论文  本文已被引 3 次  被引通知

图 & 表

图 1. 手持式LIBS光路结构示意图。 (a)激发光光路图;(b)信号光光路图

Fig. 1. Schematic of optical path structure in handheld LIBS. (a) Path diagram of excitation light; (b) path diagram of signal light

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图 2. ZEMAX仿真的光线追迹图

Fig. 2. Ray trace image simulated by ZEMAX

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图 3. 实验装置图

Fig. 3. Experimental setup

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图 4. 光谱图。(a)原始光谱图;(b)预处理的光谱

Fig. 4. Spectrogram. (a) Original signal spectrum; (b) processed signal spectrum

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图 5. 型号为E111的标准样品光谱

Fig. 5. Spectrum of standard sample E111

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图 6. Mg元素在383.83 nm及285.17 nm特征谱线处的定标曲线

Fig. 6. Calibration curves of Mg element at 383.83 nm and 285.17 nm characteristic lines

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图 7. Ti元素在323.38 nm及336.12 nm特征谱线处的定标曲线

Fig. 7. Calibration curves of Ti element at 323.38 nm and 336.12 nm characteristic lines

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表 1镜片结构参数

Table1. Structural parameters of lens

No. Type Radius /mm Thickness /mm Glass 1 Standard Infinity 20 2 Tilt Infinity 50 K9 3 Standard 24.628 -26.701 Mirror 4 Standard 53.145 56.520 Mirror 5 Standard Infinity -56.520 6 Standard 53.145 26.701 Mirror 7 Standard 24.628 -50 Mirror 8 Tilt Infinity 40 K9 9 Evenasphere -50.8 - Mirror

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表 2用于绘制定标曲线的样品型号及成分组成

Table2. Sample names and compositions used for drawing calibration curves

Samplename Mass fraction /% Si Fe Cu Mn Mg Cr Ni Zn Ti Al E111 1.250 0.825 1.880 1.240 0.692 0.092 0.161 0.401 0.121 Others E213b 0.287 0.313 0.129 1.520 0.052 - 0.075 0.047 0.060 Others E924d 12.290 1.060 2.020 0.261 0.265 - 0.427 1.540 0.018 Others 6063 0.098 0.110 0.012 0.460 1.210 0.310 - 0.053 0.220 Others E123a 0.127 0.350 4.110 0.532 1.510 - 0.037 0.147 0.039 Others

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表 3用于验证定标曲线的样品型号及成分组成

Table3. Sample names and compositions used for verifying calibration curves

Samplename Mass fraction /% Si Fe Cu Mn Mg Cr Ni Zn Ti Al K6061 0.588 0.292 0.278 0.118 1.050 0.208 0.031 0.154 0.108 Others K6063b 0.419 0.223 0.019 0.020 0.547 0.024 - 0.027 0.023 Others

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表 4样品的验证结果及相对误差

Table4. Verification results and relative errors of sample

Samplename Mass fraction of Mg /% Mass fraction of Ti /% 285.17 nm 383.83 nm 323.45 nm 334.94 nm Standardvalue Measuredvalue Relativeerror Standardvalue Measuredvalue Relativeerror Standardvalue Measuredvalue Relativeerror Standardvalue Measuredvalue Relativeerror K6061 1.050 1.021 2.76 1.050 1.072 2.10 0.108 0.106 1.85 0.108 0.113 4.63 K6063b 0.547 0.586 7.13 0.547 0.556 1.65 0.023 0.022 4.35 0.023 0.025 8.70

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表 5分析元素在不同特征谱线的检出限

Table5. Detection limits of different spectral lines in element analysis

Parameter Mg Ti 285.17 nm 383.83 nm 323.45 nm 334.94 nm Slope of calibration curve 3410.06 3117.09 2205.07 2398.08 Detection limit /(μg·g-1) 564.8 538.7 405.6 398.9

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李婧御, 陈宽, 陈国飞, 李扬彦, 曾爱军, 辛煜. 手持式激光诱导击穿光谱仪对铝合金中镁钛元素的定量分析[J]. 激光与光电子学进展, 2019, 56(2): 023002. Jingyu Li, Kuan Chen, Guofei Chen, Yangyan Li, Aijun Zeng, Yu Xin. Quantitative Analysis of Magnesium and Titanium Elements in Aluminum Alloy by Handheld Laser-Induced Breakdown Spectroscopy[J]. Laser & Optoelectronics Progress, 2019, 56(2): 023002.