Elemental Analysis of Environmental Waters by Solution Cathode Glow Discharge-Atomic Emission Spectrometry (SCGD-AES) with a Multifunctional Injection System
文献类型： 外文期刊
作者： Zheng, Peichao 1 ; Hu, Qiang 1 ; Zhang, Hangxi 1 ; Wang, Jinmei 1 ; Yang, Yang 1 ; He, Yuxin 1 ; Wu, Meini 1 ; Tian, Hongwu 2 ; Dong, Daming 3 ; Mao, Xuefeng 1 ; Lai, Chunhong 1 ;
作者机构： 1.Chongqing Univ Posts & Telecommun, Coll Optoelect Engn, Chongqing Municipal Level Key Lab Photoelect Info, Beijing 400065, Peoples R China
2.Beijing Acad Agr & Forestry Sci, Res Ctr Intelligent Equipment, Beijing, Peoples R China
3.Natl Engn Res Ctr Informat Technol Agr, Beijing, Peoples R China
关键词： Continuous flow mode; elemental analysis; flow injection mode; solution cathode glow discharge-atomic emission spectrometry (SCGD-AES)
期刊名称：ANALYTICAL LETTERS （ 影响因子：2.267； 五年影响因子：1.823 ）
ISSN： 0003-2719
年卷期： 2022 年 55 卷 14 期
页码：
收录情况： SCI
摘要： A multifunction sample injection system combined with solution cathode glow discharge-atomic emission spectrometry (SCGD-AES) was developed based on several simple devices (six-way valve, peristaltic pump and medical injector). The equipment enables two analytical modes (continuous flow and flow injection), selected according to the sample. Moreover, the equipment can be operated at atmospheric pressure without any inert gas. Under the optimal experimental conditions (1150 V discharge voltage, 2.5 mm discharge gap, 2.32 mL min(-1) flow rate and solution pH 1.0), ten elements (Na, K, Mg, Cu, Rb, Ag, Tl, Cd, Zn, and Mn) were determined using SCGD-AES in the continuous flow and flow injection modes. The detection limits for metals were from 0.1 to 264 mu g L-1 (continuous flow mode) and 0.9 to 282 mu g L-1 (flow injection mode). The relative standard deviations of the spectral intensities were below 2%. The instrumentation was successfully applied to the Yangtze River and reservoir water samples. The accuracy and viability were confirmed by comparison with inductively coupled plasma-atomic emission spectrometry (ICP-AES) measurements.
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