A chemiluminescence method induced by microplasma jet for nitrites detection and the miniature detection system using smartphone

Yi Cai; Han Zhou; Wei Li; Cheng Yao; Jianhua Wang; Yong Zhao

doi:10.1016/j.aca.2023.341339

A chemiluminescence method induced by microplasma jet for nitrites detection and the miniature detection system using smartphone

Anal Chim Acta. 2023 Aug 1:1267:341339. doi: 10.1016/j.aca.2023.341339. Epub 2023 May 10.

Authors

Yi Cai¹, Han Zhou², Wei Li³, Cheng Yao³, Jianhua Wang⁴, Yong Zhao⁵

Affiliations

¹ School of Control Engineering, Hebei Key Laboratory of Micro-Nano Precision Optical Sensing and Measurement Technology, Northeastern University at Qinhuangdao, Qinhuangdao, 066004, China; College of Information Science and Engineering, Northeastern University, Shenyang, 110819, China. Electronic address: caiyi@qhd.neu.edu.cn.
² School of Control Engineering, Hebei Key Laboratory of Micro-Nano Precision Optical Sensing and Measurement Technology, Northeastern University at Qinhuangdao, Qinhuangdao, 066004, China; College of Information Science and Engineering, Northeastern University, Shenyang, 110819, China.
³ School of Control Engineering, Hebei Key Laboratory of Micro-Nano Precision Optical Sensing and Measurement Technology, Northeastern University at Qinhuangdao, Qinhuangdao, 066004, China.
⁴ Research Center for Analytical Sciences, Department of Chemistry, College of Sciences, Northeastern University, Shenyang, 110819, China.
⁵ School of Control Engineering, Hebei Key Laboratory of Micro-Nano Precision Optical Sensing and Measurement Technology, Northeastern University at Qinhuangdao, Qinhuangdao, 066004, China; College of Information Science and Engineering, Northeastern University, Shenyang, 110819, China. Electronic address: zhaoyong@ise.neu.edu.cn.

PMID: 37257970
DOI: 10.1016/j.aca.2023.341339

Abstract

A method of luminol-diazonium chemiluminescence (CL) induced by microplasma for hazardous substance detection is proposed. The luminol-diazonium CL is caused by microplasma jet, rather than hydrogen peroxide reagent or other oxidizing agents. The CL intensity is increased by the concentration of nitrites. Based on the process of microplasma generation and CL mechanism, the optimal work conditions of the method are obtained. The linear range for nitrites detection is 0.03-1 mmol L^-1 with the limit of detection (LOD) of 0.01 mmol L^-1. Furthermore, a miniature system using test paper and smartphone is designed for nitrites detection in emergency. The detection system is confined in the custom-tailored shell which is only 28 cm in length, 18 cm in width and 10 cm in height. After microplasma jet treatment, the color of the test paper changes with the NO₂^- concentration. The photographs of the test paper are taken by the built-in camera of smartphone and analyzed by visiting the website via smartphone. The LOD is 1 mmol L^-1 obtained by the CL miniature detection system based on test paper and smartphone. The accuracy, reliability and practicability of the proposed method is verified in this paper.

Keywords: Chemiluminescence; Luminol-diazonium; Microplasma jet; Miniature detection system; NO(2)(−) Detection.