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Ultrasensitive Determination of Selenium and Arsenic by Modified Helium Atmospheric Pressure Glow Discharge Optical Emission Spectrometry Coupled with Hydride Generation
Peng, Xiaoxu; Wang, Zheng
2019-08-06
Source PublicationANALYTICAL CHEMISTRY
ISSN0003-2700
Volume91Issue:15Pages:10073
SubtypeArticle
AbstractWe herein report the development of a compact and robust optical emission spectrometry (OES)-based technique for the ultrasensitive determination of Se and As utilizing hydride generation (HG) as the sampling technique and direct-current atmospheric pressure glow discharge in He (APGD) as the radiation source. The emission sensitivities of 50 ng mL(-1) Se and As in the newly designed HG-APGD were enhanced more than 3-fold by constraining the spatial volume between two hollow-tube APGD electrodes, and the stability was significantly improved. The developed technique achieved Se and As detection limits of 0.13 and 0.087 ng mL(-1), respectively, with the corresponding relative standard deviations at analyte concentrations of 50 ng mL(-1) being <0.5% in both cases. Moreover, the HG-APGD-OES procedure was advantageous in that it exhibited a low power consumption (<17 W) and a low gas consumption (<100 mL min(-1)). Its accuracy and practicality were also demonstrated by the determination of GBW10024 (scallop) and GBW07381 (stream sediments) certified reference materials and mice blood samples. The results showed good agreement with the certified values and values obtained using inductively coupled plasma-mass spectrometry.
DOI10.1021/acs.analchem.9b02006
Language英语
WOS Research AreaChemistry
PublisherAMER CHEMICAL SOC
Citation statistics
Cited Times:11[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.sic.ac.cn/handle/331005/26917
Collection中国科学院上海硅酸盐研究所
Recommended Citation
GB/T 7714
Peng, Xiaoxu,Wang, Zheng. Ultrasensitive Determination of Selenium and Arsenic by Modified Helium Atmospheric Pressure Glow Discharge Optical Emission Spectrometry Coupled with Hydride Generation[J]. ANALYTICAL CHEMISTRY,2019,91(15):10073.
APA Peng, Xiaoxu,&Wang, Zheng.(2019).Ultrasensitive Determination of Selenium and Arsenic by Modified Helium Atmospheric Pressure Glow Discharge Optical Emission Spectrometry Coupled with Hydride Generation.ANALYTICAL CHEMISTRY,91(15),10073.
MLA Peng, Xiaoxu,et al."Ultrasensitive Determination of Selenium and Arsenic by Modified Helium Atmospheric Pressure Glow Discharge Optical Emission Spectrometry Coupled with Hydride Generation".ANALYTICAL CHEMISTRY 91.15(2019):10073.
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