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Sustainable Solution Anode Glow Discharge-Atomic Emission Spectroscopy (SAGD-AES) with Semiconductor Cathode Cooling for Elemental Analysis

文献类型： 外文期刊

作者： Zheng, Peichao 1 ; Liu, Jiali 1 ; Wang, Jinmei 1 ; Wu, Meini 1 ; Qazi, Hafiz Imran Ahmad 1 ; He, Yuxin 1 ; Yan, Nantian 1 ; Fei, Guoxing 1 ; Tian, Hongwu 2 ; Dong, Daming 2 ;

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

3.Chongqing Univ Posts & Telecommun, Coll Optoelect Engn, Chongqing Municipal Level Key Lab Photoelect Infor, Chongqing 400065, Peoples R China

关键词： Elemental analysis; heavy metals; semiconductor refrigeration; solution anode glow discharge-atomic emission spectrometry (SAGD-AES)

期刊名称：ANALYTICAL LETTERS （ 影响因子：1.6； 五年影响因子：1.9 ）

ISSN： 0003-2719

年卷期： 2024 年 57 卷 14 期

页码：

收录情况： SCI

摘要： A long-term sustainable tungsten cathode-solution anode glow discharge (SAGD) source for atomic emission spectrometry was developed for the determination of heavy metal elements. The tungsten cathode of this source was cooled by a compact refrigeration semiconductor, which is simple in design and able to operate at atmospheric pressure for long periods. When the equipment operates at its optimal conditions (75 mA discharge current, 2.0 mm discharge gap, 3.8 mL min-1 flow rate, and solution pH value of 2.0), the detection limits of Ag (338.24 nm), Cd (228.80 nm), Hg (253.66 nm), Pb (368.28 nm), Tl (337.52 nm), and Zn (213.79 nm) were explored, and the values were 0.030, 1.7, 7.2, 17, 0.24, and 25 mu g L-1, respectively. The interference of coexisting ions in water, such as K+, Ca2+, Na+, Mg2+, and Li+, on the analytical performance of the solution anode glow discharge-atomic emission spectrometry (SAGD-AES) for Cd, Hg, Pb, and Zn were investigated. The results showed that coexisting metal ions' interferences are insignificant. The SAGD-AES system was successfully applied for analyzing water samples from the Yangtze River and Baixi River, and its accuracy and practicality were verified by comparison with inductively coupled plasma-optical emission spectrometry (ICP-OES) results.

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