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Ultra-sensitive determination of inorganic arsenic valence by solution cathode glow discharge-atomic emission spectrometry coupled with hydride generation
Guo, Xiaohong1,2; Peng, Xiaoxu2; Li, Qing2; Mo, Jiamei2; Du, Yiping1; Wang, Zheng2
2017
发表期刊Journal of Analytical Atomic Spectrometry
ISSN02679477
卷号32期号:12页码:2416-2422
摘要A simple and ultra-sensitive method for the determination of inorganic arsenic valence was developed by solution cathode glow discharge atomic emission spectrometry (SCGD-AES) coupled with hydride generation (HG). Arsenic was converted into volatile hydrides by the reaction with NaBH4and HCl, after which they were delivered and subsequently injected into the near-anode region of the SCGD, where they were detected directly by atomic emission spectrometry (AES). The detection limit (DL) for arsenic was improved by four orders of magnitude compared to the single SCGD-AES process. The main operational parameters and sources of potential interference that affect the determination of arsenic were thoroughly studied. Under optimal conditions, the DLs for As(iii) and As(v) were both calculated to be 0.3 μg L-1. Repeatability, expressed as the relative standard deviation of the spectral peak height, was 2.5% (n = 11) for a 0.1 mg L-1arsenic solution. The proposed method was validated by the determination of a certified reference material (NIST SRM 1568a) and was applied to the real rice samples, where the measurement results obtained by the HG-SCGD-AES method were in good agreement with the reference values or values from hydride generation atomic fluorescence spectrometry. © 2017 The Royal Society of Chemistry.
DOI10.1039/c7ja00228a
EI入藏号20174904505000
EI主题词Atoms
EI分类号701.1 Electricity: Basic Concepts and Phenomena - 804.2 Inorganic Compounds - 931.3 Atomic and Molecular Physics - 941.4 Optical Variables Measurements
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文献类型期刊论文
条目标识符http://ir.sic.ac.cn/handle/331005/25609
专题中国科学院上海硅酸盐研究所
通讯作者Du, Yiping
作者单位1.Shanghai Key Laboratory of Functional Materials Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai; 200237, China;
2.Shanghai Institute of Ceramics, Chinese Academy of Science, 1295 Dingxi Road, Shanghai; 200050, China
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GB/T 7714
Guo, Xiaohong,Peng, Xiaoxu,Li, Qing,et al. Ultra-sensitive determination of inorganic arsenic valence by solution cathode glow discharge-atomic emission spectrometry coupled with hydride generation[J]. Journal of Analytical Atomic Spectrometry,2017,32(12):2416-2422.
APA Guo, Xiaohong,Peng, Xiaoxu,Li, Qing,Mo, Jiamei,Du, Yiping,&Wang, Zheng.(2017).Ultra-sensitive determination of inorganic arsenic valence by solution cathode glow discharge-atomic emission spectrometry coupled with hydride generation.Journal of Analytical Atomic Spectrometry,32(12),2416-2422.
MLA Guo, Xiaohong,et al."Ultra-sensitive determination of inorganic arsenic valence by solution cathode glow discharge-atomic emission spectrometry coupled with hydride generation".Journal of Analytical Atomic Spectrometry 32.12(2017):2416-2422.
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