首页|Effects of KCI and KI additives on soil breakdown spec-troscopy characteristics
Effects of KCI and KI additives on soil breakdown spec-troscopy characteristics
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In order to enhance the spectral characteristics of the laser-induced breakdown spectroscopy(LIBS),the spectral sig-nals 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 I288.08 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 elec-tron density are improved.This provides an experimental reference for improving the accuracy of LIBS in soil detec-tion.
LI Honglian、ZHANG Shizhao、ZHANG Chenxing、WANG Fan、FANG Lide、LI Xiaoting
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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
国家自然科学基金Key Projects of Hebei Natural Science Foundation2018"Chunhui Program"Cooperative Scientific Research Projects of Ministry of Education and the Hebei Natural Science Youth FFunding Project for Introducing Overseas Students in Hebei Province
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