Rapid automatic detection of water Ca, Mg elements using laser-induced breakdown spectroscopy
文献类型： 外文期刊
作者： Zhu, Yijun 1 ; Ma, Shixiang 2 ; Yang, Guiyan 2 ; Tian, Hongwu 2 ; Dong, Daming 1 ;
作者机构： 1.Guangxi Univ, Sch Mech Engn, Nanning, Peoples R China
2.Beijing Acad Agr & Forestry Sci, Res Ctr Intelligent Equipment, Beijing, Peoples R China
3.Minist Agr & Rural Affairs, Key Lab Agr Sensors, Beijing, Peoples R China
关键词： laser-induced breakdown spectroscopy (LIBS); automatic detecting system; water hardness; cation exchange membrane (CEM); precise control
期刊名称：FRONTIERS IN PHYSICS （ 影响因子：3.1； 五年影响因子：3.3 ）
ISSN： 2296-424X
年卷期： 2023 年 11 卷
页码：
收录情况： SCI
摘要： Ca, Mg, as the main components in water, are not only essential nutrients for life but are also an important index of water hardness. Rapid detection of the element content is of great significance for water quality evaluation and nutrient balance in planting and breeding water. Traditional laboratory analysis methods are time consuming and involve complex procedures. Ion cross sensitivity and response drift also limit the application of online sensors. These disadvantages are not in line with the precise control and rapid response required for practical applications. Here, we propose a rapid automatic Ca, Mg ion concentration detection method using Laser-induced breakdown spectroscopy. Based on a cation exchange membrane, an automatic control system integrating water sampling, hybrid reacting, attachment drying and spectra measuring was constructed. The testing time for one sample could be compressed to 5 min. Consequently, it met the requirements of accuracy and timeliness of water element regulation. The proposed system can provide new technical means for large-scale aquaculture, soilless cultivation of facilities and other scenarios aiming at accurate measurement and control of elements in water body.
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