Determination of impurities in K2Cr2O7 by an inductively coupled plasma spectrometer

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	Determination of impurities in K2Cr2O7 by an inductively coupled plasma spectrometer
	Li, YP ; Zhang, Y ; Qi, T ; Liu, KL
刊名	SPECTROSCOPY AND SPECTRAL ANALYSIS
	2004-11-01
卷号	24 期号:11 页码:1428-1431
关键词	ICP-AES matrix match K2Cr2O7 indirect determination
ISSN号	1000-0593
其他题名	Spectrosc. Spectr. Anal.
中文摘要	The trace elements Si, Al, Fe, Ca, Mn, Mg, and Cl in the K2Cr2O7 produced by chromate cleaner production were determined by a sequential inductively coupled plasma spectrometer in this paper. Matrix effect was studied and eliminated through matrix matching. The analytical conditions for the elements were optimized. Incident power of the RF generator was 0.95 W. Pressure of carrier gas flow was 0.13 MPa, and its flow rate was 1.2 L(.)min(-1). Auxiliary gas flow rate was 0.2 L(.)min(-1). The element Cl was indirectly determined by the method of AgCl precipitation. The ion Cl- can be completely precipitated in 6% nitric acid system, and then determined after keeping the solution at 50 degreesC for two hours. The recoveries of the studied impurities range from 95% to 104%, and the relative standard deviations are lower than 4% ( n = 10). Detection limits of these impurities are in a range 0.0001%-0.00001% (w/w). The analytical results of random samples agree well with the results using the standard-adding method, and the relative error varies from -4.27% to + 5.26%. The developed method has been applied to the determination of impurities in K2Cr2O7 product with satisfactory results.
英文摘要	The trace elements Si, Al, Fe, Ca, Mn, Mg, and Cl in the K2Cr2O7 produced by chromate cleaner production were determined by a sequential inductively coupled plasma spectrometer in this paper. Matrix effect was studied and eliminated through matrix matching. The analytical conditions for the elements were optimized. Incident power of the RF generator was 0.95 W. Pressure of carrier gas flow was 0.13 MPa, and its flow rate was 1.2 L(.)min(-1). Auxiliary gas flow rate was 0.2 L(.)min(-1). The element Cl was indirectly determined by the method of AgCl precipitation. The ion Cl- can be completely precipitated in 6% nitric acid system, and then determined after keeping the solution at 50 degreesC for two hours. The recoveries of the studied impurities range from 95% to 104%, and the relative standard deviations are lower than 4% ( n = 10). Detection limits of these impurities are in a range 0.0001%-0.00001% (w/w). The analytical results of random samples agree well with the results using the standard-adding method, and the relative error varies from -4.27% to + 5.26%. The developed method has been applied to the determination of impurities in K2Cr2O7 product with satisfactory results.
WOS标题词	Science & Technology ; Technology
类目[WOS]	Spectroscopy
研究领域[WOS]	Spectroscopy
关键词[WOS]	ICP-AES ; FE ; MN ; CA ; MG ; ZN ; CU
收录类别	SCI
原文出处	://WOS:000225661600042
语种	英语
WOS记录号	WOS:000225661600042
公开日期	2013-11-05
内容类型	期刊论文
版本	出版稿
源URL	[http://ir.ipe.ac.cn/handle/122111/4915]
专题	过程工程研究所_研究所（批量导入）
作者单位	1.Chinese Acad Sci, Inst Proc Engn, Key Lab Green Proc & Engn, Beijing 100080, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
推荐引用方式 GB/T 7714	Li, YP,Zhang, Y,Qi, T,et al. Determination of impurities in K2Cr2O7 by an inductively coupled plasma spectrometer[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS,2004,24(11):1428-1431.
APA	Li, YP,Zhang, Y,Qi, T,&Liu, KL.(2004).Determination of impurities in K2Cr2O7 by an inductively coupled plasma spectrometer.SPECTROSCOPY AND SPECTRAL ANALYSIS,24(11),1428-1431.
MLA	Li, YP,et al."Determination of impurities in K2Cr2O7 by an inductively coupled plasma spectrometer".SPECTROSCOPY AND SPECTRAL ANALYSIS 24.11(2004):1428-1431.