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Highly Sensitive Determination of Selenium, Arsenic and Mercury in Seawater by Hydride Generation Coupled with Solution Cathode Glow Discharge Optical Emission Spectrometry
Zhao Ming-yue; Cheng Jun-qi; Yang Bing-cheng; Wang Zheng
2019-05-01
Source PublicationSPECTROSCOPY AND SPECTRAL ANALYSIS
ISSN1000-0593
Volume39Issue:5Pages:1359
SubtypeArticle
AbstractIn this paper, the trace amounts of selenium, arsenic and mercury in seawater were quantitatively detected by coupling hydride generation (FIG) device with solution cathode glow discharge optical emission spectrometry (SCGD-OES). Instrument conditions were optimized, and the optimal instrument conditions for quantitative analysis of selenium, arsenic and mercury were determined : 5% HCl as the carrier acid for subsequent experiments, 1. 5% NaBH, as the reducing agent, the SCGD parameters of the electrolyte, discharge voltage, and flow rate were maintained at pH 1 HCl, 1 060 V, and 2. 2 mL . min(-1), respectively. Element wavelengths of 203. 4, 228. 8 and 253. 7 nm were selected as the analytical lines of selenium, arsenic and mercury, and the mixed standard solutions of selenium, arsenic and mercury were determined under the optimal working conditions simultaneously. The mass concentration of selenium, arsenic and mercury is linear with the emission intensity in the range of 2 similar to 100 mu g. L-1, and the linear correlation coefficients are 0. 999 2, 0. 999 4 and 0. 998 5, respectively. The detection limits were 0. 54, 0. 92 and 1. 91 mu g .L-1. The relative standard deviations of the signal values of selenium, arsenic and mercury are less than 3% at a concentration of 0. 1 mg .L-1 Compared with SCGD-OES, the detection limits of selenium, arsenic and mercury are re- duced by three, four and two orders of magnitude, respectively. Soil reference material GBW07405 was selected to verify the accuracy of the results of the coupling instrument, and the measured value was consistent with the reference value. The method has been applied to the analysis of trace selenium, arsenic and mercury in seawater samples from the Yellow Sea coast of China and the analysis results are in agreement with those of ICP-MS. The recoveries of standard addition are between 94. 9% and 105. 3%. HG-SCGD-OES enables highly sensitive on-line quantitative detection of trace amounts of selenium, arsenic and mercury in seawater.
KeywordHydride generation Solution cathode glow discharge-optical emission spectrometry Selenium Arsenic Mercury
DOI10.3964/j.issn.1000-0593(2019)05-1359-07
Language中文
WOS Research AreaSpectroscopy
PublisherOFFICE SPECTROSCOPY & SPECTRAL ANALYSIS
Citation statistics
Document Type期刊论文
Identifierhttp://ir.sic.ac.cn/handle/331005/27137
Collection中国科学院上海硅酸盐研究所
Recommended Citation
GB/T 7714
Zhao Ming-yue,Cheng Jun-qi,Yang Bing-cheng,et al. Highly Sensitive Determination of Selenium, Arsenic and Mercury in Seawater by Hydride Generation Coupled with Solution Cathode Glow Discharge Optical Emission Spectrometry[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS,2019,39(5):1359.
APA Zhao Ming-yue,Cheng Jun-qi,Yang Bing-cheng,&Wang Zheng.(2019).Highly Sensitive Determination of Selenium, Arsenic and Mercury in Seawater by Hydride Generation Coupled with Solution Cathode Glow Discharge Optical Emission Spectrometry.SPECTROSCOPY AND SPECTRAL ANALYSIS,39(5),1359.
MLA Zhao Ming-yue,et al."Highly Sensitive Determination of Selenium, Arsenic and Mercury in Seawater by Hydride Generation Coupled with Solution Cathode Glow Discharge Optical Emission Spectrometry".SPECTROSCOPY AND SPECTRAL ANALYSIS 39.5(2019):1359.
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