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	Direct spectrophotometric determination of chromium by microwave-oven induced flow-injection analysis
	Zhao H(赵鸿)
	1998
关键词	microwave spectrophotometric flow-injection chromium(VI) dibromocarboxyarsenazo dibromo-o-carborylchlorophonazo
英文摘要	Two sensitive flow-injection methods have been developed for the determination of traces of Cr(VI), based on the very efficient microwave-accelerated reactions of Cr2O72- with dibromocarboxyarsenazo (DBM-AsA, in System 1) and dibromo-o-carborylchlorophonazo (DBOK-CPA, in System 2). The reactions are followed spectrophotometrically by measuring the decrease in the absorbance of DBM-AsA at 535 nm or DBOK-CPA at 556 nm. The sampling frequency for both systems is 40 h(-1). The calibration graphs are Linear in the range between 1.62 and 27.0 mu g ml(-1), and 0.40 and 10.80 mu g ml(-1) for Systems 1 and 2, respectively. The respective detection limits are 0.087 and 0.10 mu g ml(-1). The methods were applied to determining traces of chromium in a steel sample and electroplating solutions with satisfactory results. (C) 1998 Published by Elsevier Science B.V. All rights reserved.
语种	英语
内容类型	期刊论文
源URL	[http://dspace.xmu.edu.cn/handle/2288/69921]
专题	物理技术－已发表论文
推荐引用方式 GB/T 7714	Zhao H. Direct spectrophotometric determination of chromium by microwave-oven induced flow-injection analysis[J],1998.
APA	赵鸿.(1998).Direct spectrophotometric determination of chromium by microwave-oven induced flow-injection analysis..
MLA	赵鸿."Direct spectrophotometric determination of chromium by microwave-oven induced flow-injection analysis".(1998).

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