2026-10-12T18:48:40Z https://www.scidb.cn/oai

10.57760/sciencedb.03247 2022-10-17T10:03:08Z

2022-10-17 Mapping analysis of heavy metal elements in polluted soils using Laser Induced Breakdown Spectroscopy doi:10.57760/sciencedb.03247 en Laser-induced breakdown　spectroscopy(LIBS) has become a powerful technology　for quantitative analysis of the toxic heavy　metals in soils due to its excellent a attributes　of rapid analysis speed, simultaneous multi-element assay, and low-cost detection with slight sample preparation. In this work, LIBS was applied to analyze the spatial concentration distribution of toxic heavy metals in soils around a smelter. The spectral lines of copper, lead and chromium were used to directly analyzed the concentration distribution in soils around the smelter. The relevance between the spectral line intensities of Cr and the total concentrations detected by inductively coupled plasma optical emission spectrometry was poor. To improve the analysis accuracy, the calibration-free LIBS method combined with Saha equation was used. Compared with the preliminary analysis result of spectral line intensities, the concentration ratios of Cr/Si obtained from CF-LIBS showed a good correlation with the total concentrations. Then, the map of the spatial relative concentration distribution of Cr superposed on the aerial view of the locations was established.  Laser-induced breakdown spectroscopy; Soil; Heavy metals; Concentration distribution Gu Yan-hong ZHAO Nan-jing MA Ming-jun MENG De-shuo JIA Yao FANG Li LIU Jian-guo LIU Wen-qing PUBLIC https://creativecommons.org/licenses/by-nc-nd/4.0/ dataset Science Data Bank