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Electrochemical Sensor for Ammonium Nitrogen in Soil Based on Platinum Modified Screen-printed Electrodes

文献类型： 外文期刊

作者： Chen, Shan 1 ; Chen, Jinhu 2 ; Xu, Guohailin 3 ; Liu, Jun 1 ; Qian, Mingyan 1 ; Chen, Jingwen 1 ; Fang, Yimin 2 ;

作者机构： 1.Minist Agr & Rural Affairs, Inst Agr Facil & Equipment, Key Lab Protected Agr Engn Middle & Lower Reaches, Jiangsu Acad Agr Sci,Jiangsu Engn Technol Res Ctr, Nanjing 210014, Peoples R China

2.Nanjing Med Univ, Sch Pharm, Nanjing 211166, Peoples R China

3.Jiangsu Univ, Sch Agr Engn, Zhenjiang 212013, Peoples R China

关键词： Soil; Ammonium nitrogen; Electrochemistry; Screen printed electrode

期刊名称：CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE （ 影响因子：1.0； 五年影响因子：0.6 ）

ISSN： 0251-0790

年卷期： 2023 年 44 卷 12 期

页码：

收录情况： SCI

摘要： Rapid detection of ammonium nitrogen(NH4+) in soil is quit important for precise agriculture as it can significantly increase the utilization of soil fertility and reduce the environmental pollution. Compared with the traditional detection methods for NH4+ which are time-consuming and expensive, here we developed a rapid and sensitive electrochemical sensor by platinum deposited screen printed electrodes(Pt-SPEs) as sensing components. Owing to the specific catalysis to NH4+ , using the carbonate to precipitate the metal ions, coupling with the ammonium extraction syringe, NH4+ in soil can be detected in 5 min for the first time, with a detection range of 0.1-5 mmol/L(R2=0.997)and a detection limit of 13 mu mol/L(S/N=3). This sensors can be applied for on-site detection of NH4+ in soil due to its rapidity, simplicity, high selectivity and stability without large equipment, providing an important data support for precise agriculture.

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