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Highly Sensitive Detection of Heavy Metal Elements Using Laser-Induced Breakdown Spectroscopy Coupled with Chelating Resin Enrichment

文献类型： 外文期刊

作者： Wang, Jinmei 1 ; Li, Gang 1 ; Zheng, Peichao 1 ; Shata, Sahar 2 ; Qazi, Hafiz Imran Ahmad 1 ; Lu, Jianshu 1 ; Liu, Shaojian 1 ; Tian, Hongwu 3 ; Dong, Daming 3 ;

作者机构： 1.Chongqing Univ Posts & Telecommun, Coll Optoelect Engn, Chongqing Municipal Level Key Lab Photoelect Infor, Chongqing 400065, Peoples R China

2.Tufts Univ, Chem Dept, Water & Surface Studies Lab, Medford, MA 02155 USA

3.Beijing Acad Agr & Forestry Sci, Natl Res Ctr Intelligent Equipment Agr, Beijing 100097, Peoples R China

关键词： laser-induced breakdown spectroscopy; heavy metals; quantitative analysis; chelating resin

期刊名称：CHEMOSENSORS （ 影响因子：4.2； 五年影响因子：4.2 ）

ISSN：

年卷期： 2023 年 11 卷 4 期

页码：

收录情况： SCI

摘要： In this study, we demonstrate a unique method for the detection of heavy metals such as chromium (Cr), copper (Cu), lead (Pb), and nickel (Ni) at trace levels in aqueous solutions via laser-induced breakdown spectroscopy (LIBS) enriched using chelating resin. Reduction in sample time preparation was shortened by tailoring the sample processing time with the aid of an enrichment method. The calibration curves and LODs of CH-90 chelating resin for enriching Cr, Cu, Pb, and Ni cations were established under the optimal conditions. The linear correlation coefficients were all above 0.98, and the detection limits were 0.148 mg/L, 0.150 mg/L, 0.149 mg/L, and 0.240 mg/L, corresponding to Cr, Cu, Pb, and Ni, respectively. The quantitative evaluation of the obtained results signifies that the proposed method is highly sensitive for detecting trace elements and offers a good correspondence of the acquired linear correlation with its calibration model. Results comparison with past studies suggests that the proposed method is able to achieve lower LODs for elements under investigation.

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