NDLI: Flow injection spectrophotometric determination of iron based on its catalytic effect on the oxidation of variamine blue by hydrogen peroxide

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Flow injection spectrophotometric determination of iron based on its catalytic effect on the oxidation of variamine blue by hydrogen peroxide

Content Provider	Semantic Scholar
Author	Khaled, Elmorsy Hassan, Hassan N. A. Moghieb, Ahmed M. H.
Copyright Year	2007
Abstract	A simple, rapid and sensitive kinetic spectrophotometric method for the determination of trace amounts of iron (II) was developed based on its catalytic effect on the oxidation of variamine blue with hydrogen peroxide in the presence of triethanolamine as activator to form a deep violet blue colored species with an absorption maximum at 560 nm. The reaction was monitored using FIA and batch methods. The calibration graphs were linear in the concentration range 5.4-130 and 3.4-40 ng of iron for the FIA and batch, respectively. The FIA technique showed good average recoveries with lower detection limit compared with the batch technique. The method was highly selective to iron (the tolerance limit for 20 ions was listed) and successfully applied for iron determination in pharmaceutical preparation, polluted air and tap water with average recoveries agreed with the official method. Key word: Kinetic; Iron (II); Variamine blue; Flow injection; Batch analysis; Polluted air; Pharmaceutical preparations; Tap water.
Starting Page	109
Ending Page	113
Page Count	5
File Format	PDF HTM / HTML
Volume Number	24
Alternate Webpage(s)	http://aitech.ac.jp/~jafia/english/jfia/contents/24_2/JFIA24(2)(2007)pp109-113.pdf
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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