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

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

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...

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Bibliographic Details
Published in:Chemosensors Vol. 11; no. 4; p. 228
Main Authors: Wang, Jinmei, Li, Gang, Zheng, Peichao, Shata, Sahar, Qazi, Hafiz Imran Ahmad, Lu, Jianshu, Liu, Shaojian, Tian, Hongwu, Dong, Daming
Format: Journal Article
Language:English
Published: Basel MDPI AG 01-04-2023
Subjects:
Ablation
Adsorption
Aluminum
Aqueous solutions
Calibration
Cations
chelating resin
Chelating resins
Chelation
Chemical detectors
Chromium
Copper
Correlation coefficients
Drinking water
Enrichment
Glass
Graphite
Heavy metals
Laser induced breakdown spectroscopy
Lasers
Lead
Nickel
Plasma
Production processes
Quantitative analysis
Spectroscopy
Spectrum analysis
Trace elements
China
United Kingdom > UK
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Summary: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.
ISSN:2227-9040
2227-9040
DOI:10.3390/chemosensors11040228