Laser & Optoelectronics Progress, Volume. 60, Issue 17, 1730006(2023)
Highly Sensitive Detection of Cd in Soil Using Laser-Induced Breakdown Spectroscopy
Figures & Tables(13)
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%
Table 1. Analysis of the standard value and uncertainty of the standard matter of the active component in the three standard soils
View tableTable 1. Analysis of the standard value and uncertainty of the standard matter of the active component in the three standard soils
Characteristic parameter GBW07494 GBW07496 GBW07497 Cl- 13±3 37±5 16±3 Mg2+ 12.7±1.4 53±6 31±4 K+ 35±4 117±7 84±11 Na+ 24±3 57±5 42±7 Cu-DTPA 2.23±0.12 3.74±0.25 2.16±0.16 Zn-DTPA 1.19±0.13 1.66±0.21 2.62±0.29 Fe-DTPA 150±6 163±13 210±16 Mn-DTPA 28±4 40±5 52±6 Cd-DTPA 0.028±0.007 0.038±0.004 0.062±0.008 Pb-DTPA 1.34±0.11 2.19±0.20 2.47±0.20 Ni-DTPA 0.50±0.07 0.86±0.06 1.00±0.10 Co-DTPA 0.25±0.04 0.35±0.04 0.44±0.07
Table 2. Mass changes of soil flake samples with different NaCl doping mass fractions safter 50 monopulse measurements
View tableTable 2. Mass changes of soil flake samples with different NaCl doping mass fractions safter 50 monopulse measurements
Mass fraction of NaCl /% Mass before measurement /g Mass after measurement /g Ablative mass /g 0 2.9628 2.9567 0.0061 10 2.9650 2.9598 0.0052 20 2.9108 2.9048 0.0060 30 2.9702 2.9644 0.0058 40 2.9069 2.9014 0.0055 50 2.9634 2.9583 0.0051 60 2.9768 2.9695 0.0073 70 2.9719 2.9636 0.0083 80 2.9721 2.9633 0.0088 90 2.9702 2.9618 0.0084 99 2.9850 2.9740 0.0110
Table 3. Parameters of the selected seven iron element characteristic lines
View tableTable 3. Parameters of the selected seven iron element characteristic lines
Wavelength /nm gA E /cm-1 388.6280 3.70×107 26140.179 367.9910 1.24×107 27166.820 344.0606 1.20×108 29056.324 382.0425 6.00×108 33095.941 303.7380 1.46×108 33801.572 356.5380 3.86×108 35767.564 404.5810 7.76×108 36686.176
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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
Paper Information
Category: Spectroscopy
Received: Mar. 11, 2022
Accepted: Jun. 15, 2022
Published Online: Sep. 13, 2023
The Author Email: Nanjing Zhao (njzhao@aiofm.ac.cn)
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