On-Site Detection of Ca and Mg in Surface Water Using Portable Laser-Induced Breakdown Spectroscopy
文献类型： 外文期刊
作者： Wan, Yuanxin 1 ; Ma, Shixiang 2 ; Zheng, Peichao 1 ; Zhao, Xiande 2 ; Xing, Zhen 2 ; Jiao, Leizi 2 ; Tian, Hongwu 2 ; Dong, Daming 2 ;
作者机构： 1.Chongqing Univ Posts & Telecommun, Sch Photoelect Engn, Chongqing 400065, Peoples R China
2.Beijing Acad Agr & Forestry Sci, Res Ctr Intelligent Equipment, Beijing 100097, Peoples R China
3.Minist Agr & Rural Affairs, Key Lab Agr Sensors, Beijing 100097, Peoples R China
关键词： laser-induced breakdown spectroscopy (LIBS); miniaturized LIBS; on-site detection
期刊名称：CHEMOSENSORS （ 影响因子：3.7； 五年影响因子：3.8 ）
ISSN：
年卷期： 2025 年 13 卷 1 期
页码：
收录情况： SCI
摘要： Ca and Mg are key constituents in surface water that are essential nutrients and vital indicators of water hardness. Rapid on-site measurement of Ca and Mg concentrations in surface water is important. However, traditional laboratory detection methods are complex and time-consuming, and on-site detection is difficult. In this study, a portable surface water detection method was developed using laser-induced breakdown spectroscopy with a miniaturized spectrometer LIBS and a liquid jet device for sample introduction. The device enables the rapid online in situ measurement of elemental concentrations in the water. The limits of detection for the rapid on-site detection of Ca and Mg in surface water were 11.58 and 2.57 mg/L, respectively. We applied this method to assess the concentrations of Ca and Mg in authentic water samples collected from rivers and ponds. The recovery rates for Ca and Mg were 90.83-101.74% and 93.43-108.74%, respectively. This method is suitable for rapid, on-site, and highly sensitive monitoring of Ca and Mg concentrations in the environment.
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