| LI Honglian,ZHANG Shizhao,ZHANG Chenxing,WANG Fan,FANG Lide,LI Xiaoting.Effects of KCl and KI additives on soil breakdown spectroscopy characteristics[J].Optoelectronics Letters,2022,(2):109-114 |
| Effects of KCl and KI additives on soil breakdown spectroscopy characteristics |
| Author Name | Affiliation | | LI Honglian | School of Quality and Technical Supervision, Hebei University, Baoding 071002, China
National & Local Joint Engineering Research Center of Metrology Instrument and System, Baoding 071002, China
Hebei Key Laboratory of Energy Metering and Safety Testing Technology, Hebei University, Baoding 071002, China | | ZHANG Shizhao | School of Quality and Technical Supervision, Hebei University, Baoding 071002, China
National & Local Joint Engineering Research Center of Metrology Instrument and System, Baoding 071002, China
Hebei Key Laboratory of Energy Metering and Safety Testing Technology, Hebei University, Baoding 071002, China | | ZHANG Chenxing | School of Quality and Technical Supervision, Hebei University, Baoding 071002, China
National & Local Joint Engineering Research Center of Metrology Instrument and System, Baoding 071002, China
Hebei Key Laboratory of Energy Metering and Safety Testing Technology, Hebei University, Baoding 071002, China | | WANG Fan | School of Quality and Technical Supervision, Hebei University, Baoding 071002, China
National & Local Joint Engineering Research Center of Metrology Instrument and System, Baoding 071002, China
Hebei Key Laboratory of Energy Metering and Safety Testing Technology, Hebei University, Baoding 071002, China | | FANG Lide | School of Quality and Technical Supervision, Hebei University, Baoding 071002, China
National & Local Joint Engineering Research Center of Metrology Instrument and System, Baoding 071002, China
Hebei Key Laboratory of Energy Metering and Safety Testing Technology, Hebei University, Baoding 071002, China | | LI Xiaoting | School of Quality and Technical Supervision, Hebei University, Baoding 071002, China
National & Local Joint Engineering Research Center of Metrology Instrument and System, Baoding 071002, China
Hebei Key Laboratory of Energy Metering and Safety Testing Technology, Hebei University, Baoding 071002, China |
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| Abstract: |
| In order to enhance the spectral characteristics of the laser-induced breakdown spectroscopy (LIBS), the spectral signals of soil samples with different concentrations of KCl and KI additives were analyzed. The optimal laser energy, the lens to sample distance (LTSD) and the delay time were determined. Under the optimum experimental conditions, the spectral intensity, signal-to-noise ratio (SNR) and plasma characteristics of Cd I 288.08 nm and Al I 394.40 nm in soil samples with 0%, 5%, 10%, 15%, 20%, 25% and 30% KCl and KI additives were analyzed. The experimental results show that the spectral intensities of Cd and Al in soil samples with 15% KCl are 1.33 times and 1.61 times of that of the original sample, while those with 15% KI are 1.84 times and 1.81 times. The SNR, plasma temperature and electron density are improved. This provides an experimental reference for improving the accuracy of LIBS in soil detection. |
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