Chaochao Pan, Nanjing Zhao, Mingjun Ma, Ruifang Yang, Jingqiang Yang, Jianguo Liu. Highly Sensitive Detection of Cd in Soil Using Laser-Induced Breakdown Spectroscopy[J]. Laser & Optoelectronics Progress, 2023, 60(17): 1730006
- Laser & Optoelectronics Progress
- Vol. 60, Issue 17, 1730006 (2023)
Fig. 1. Schematic diagram of experimental setup
Fig. 2. Effects of different mass fractions of NaCl doping on the intensity of Cd 214.441 nm characteristic line
Fig. 3. Effects of different mass fractions of NaCl doping on the intensity of Cd 228.802 nm characteristic line
Fig. 4. Effects of doping NaCl mass fraction on the intensity of Cd 214.441 nm and Cd 228.802 nm characteristic lines
Fig. 5. Effects of NaCl mass fraction on the SBR of Cd 214.441 nm and Cd 228.802 nm characteristic lines
Fig. 6. Calibration curves of Cd 214.441 nm in soils doped with 90% NaCl mass fraction and undoped NaCl
Fig. 7. Calibration curves of Cd 228.802 nm in soils doped with 90% NaCl mass fraction and undoped NaCl
Fig. 8. Boltzmann curves of multispectral lines with different NaCl doping mass fractions. (a) 0%; (b) 30%; (c) 60%; (d) 90%
Fig. 9. Effects of doping NaCl mass fraction on plasma temperature
Fig. 10. Effects of doping NaCl mass fraction on plasma eletron density
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Table 1. Analysis of the standard value and uncertainty of the standard matter of the active component in the three standard soils
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Table 2. Mass changes of soil flake samples with different NaCl doping mass fractions safter 50 monopulse measurements
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Table 3. Parameters of the selected seven iron element characteristic lines
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