Determination of Metals by Portable Millisecond Pulsed Solution Cathode Glow Discharge (SCGD) Atomic Emission Spectroscopy (AES)
文献类型： 外文期刊
作者： Zheng, Peichao 1 ; Wang, Ningshen 1 ; Wang, Jinmei 1 ; Qazi, Hafiz Imran Ahmad 1 ; Tian, Hongwu 2 ; Dong, Daming 2 ; He, Yuxin 1 ; Wu, Meini 1 ;
作者机构： 1.Chongqing Univ Posts & Telecommun, Coll Optoelect Engn, Chongqing Municipal Level Key Lab Photoelect Infor, Chongqing, Peoples R China
2.Beijing Acad Agr & Forestry Sci, Natl Res Ctr Intelligent Equipment Agr, Beijing, Peoples R China
关键词： Atomic emission spectrometry (AES); elemental analysis; millisecond pulsed solution cathode glow discharge (SCGD); solution spectroscopy; >
期刊名称：ANALYTICAL LETTERS （ 影响因子：2.0； 五年影响因子：1.8 ）
ISSN： 0003-2719
年卷期： 2023 年
页码：
收录情况： SCI
摘要： In order to determine metal ions in aqueous solution, a millisecond pulsed solution cathode glow discharge (SCGD) source coupled with a portable spectrometer was developed for atomic emission spectrometry (AES). The millisecond pulsed SCGD source was operated with two high-voltage DC power supplies and a high-voltage pulse switch, specifically boosting the analyte excitation and sustain the glow discharge. The method to excite the plasma discharge contrasts with traditional approaches that employ a single power source. The influence of operating parameters, including pulsed voltage, pulsed frequency, duty ratio, and sample flow rate, were optimized to construct a system having good stability and improved excitation of metal ions. The optimum detection limits for Na, K, Li, Mg, Ag, Cs, Rb, and Sr were 0.17, 0.32, 0.38, 0.50, 2.65, 1.30, 0.22, and 74.02 & mu;g & BULL;L-1, respectively. Furthermore, mountain spring, Yangtze River, and reservoir water were spiked with Ag, Rb, and Cs; the recoveries ranged from 105% to 106%, 106% to 107%, and 107% to 108% indicating that the developed system has favorable analytical performance.
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