Qiuyun Wang, Xun Gao, Zeyu Wang, Ying Cui, Anmin Chen and Xueyan Han
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引用次数: 0
摘要
本研究提出了一种利用表面增强激光诱导击穿光谱（SE-LIBS）检测水中重金属（Cr， Cu和Pb）的高灵敏度方法，该方法采用砂纸抛光金属衬底。将含有Cr、Cu和Pb的溶液应用于用2000目砂纸抛光的Al金属基体上。抛光过程减少了“咖啡环效应”，促进了元素的更均匀分布，提高了光谱稳定性，最小化了实验误差。定量分析结果表明，Cr、Cu和Pb的检出限分别为1.02、1.23和3.26 ng mL−1。该方法显著提高了重金属检测的灵敏度、准确性和稳定性，在水质监测和环境污染分析中具有重要作用。
High sensitivity detection of heavy metal elements in water by polishing assisted SE-LIBS
This study presents a highly sensitive method for detecting heavy metals (Cr, Cu, and Pb) in water using surface-enhanced laser-induced breakdown spectroscopy (SE-LIBS) with a sandpaper-polished metal substrate. Solutions containing Cr, Cu, and Pb were applied to an Al metal substrate polished with 2000 mesh sandpaper. The polishing process reduced the “coffee ring effect”, promoting a more even distribution of elements, improving spectral stability, and minimizing experimental errors. The quantitative analysis results show that the detection limits of Cr, Cu and Pb were 1.02, 1.23 and 3.26 ng mL−1. This method dramatically enhances the sensitivity, accuracy and stability of heavy metal detection, and plays a key role in water quality monitoring and environmental pollution analysis.
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