Double hydride generation gaseous phase enrichment with flow injection on-line automatic preparation for ultratrace amounts of total selenium determination by atomic fluorescence spectrometry

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	Double hydride generation gaseous phase enrichment with flow injection on-line automatic preparation for ultratrace amounts of total selenium determination by atomic fluorescence spectrometry
	Guo, X. M. ; Li, S. P. ; Huang, B. L. ; Huang BL(黄本立)
刊名	http://dx.doi.org/10.1081/SL-200049589
	2005
关键词	ABSORPTION-SPECTROMETRY ALKALINE-SOLUTIONS GRAPHITE-FURNACE PRECONCENTRATION
英文摘要	A double hydride generation technique was developed and successfully used for the determination of total ultratrace amounts of selenium by atomic fluorescence spectrometry (AFS). In this technique, the acid digested sample solution was used for the generation of selenium hydride first, after which, the SeH2 formed was reacted with, and absorbed in, a small volume of alkaline solution (0.5 mol L-1 NaOH + 0.05 mol L-1 H2O2), in which automated organic selenium digestion by the flow injection technique was pursued. The alkaline solution with the selenium absorbed was mixed with the reductant and then acidified to achieve hydride generation for the second time. The concentration factor depends on the volume ratio of the sample and the alkaline solution. Selenium hydride was atomized in a quartz atomizer with a mini-hydrogen diffusion flame and detected by AFS. Under the conditions employed, a detection limit of 2-6 pg Se mL(-1) and 2.8% relative standard deviation (RSD) (with 1 ng mL(-1) Se, n = 11), and 12% RSD (with 0.05 ng mL(-1) Se, n = 7) were obtained by this enrichment technique and AFS detection.
语种	英语
内容类型	期刊论文
源URL	[http://dspace.xmu.edu.cn/handle/2288/64516]
专题	化学化工－已发表论文
推荐引用方式 GB/T 7714	Guo, X. M.,Li, S. P.,Huang, B. L.,et al. Double hydride generation gaseous phase enrichment with flow injection on-line automatic preparation for ultratrace amounts of total selenium determination by atomic fluorescence spectrometry[J]. http://dx.doi.org/10.1081/SL-200049589,2005.
APA	Guo, X. M.,Li, S. P.,Huang, B. L.,&黄本立.(2005).Double hydride generation gaseous phase enrichment with flow injection on-line automatic preparation for ultratrace amounts of total selenium determination by atomic fluorescence spectrometry.http://dx.doi.org/10.1081/SL-200049589.
MLA	Guo, X. M.,et al."Double hydride generation gaseous phase enrichment with flow injection on-line automatic preparation for ultratrace amounts of total selenium determination by atomic fluorescence spectrometry".http://dx.doi.org/10.1081/SL-200049589 (2005).