University of North Florida
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Stuart Chalk, Ph.D.
Department of Chemistry
University of North Florida
Phone: 1-904-620-1938
Fax: 1-904-620-3535
Website: @unf

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Classification: Environmental -> water -> mine

Citations 1

"Use Of A Sequential Injection Technique To Evaluate The Effect Of Mixing Chambers On Zone Penetration"
Anal. Chim. Acta 1998 Volume 367, Issue 1-3 Pages 111-121
T. McCormack and J. F. van Staden*

Abstract: The simple chemical and fast rate of the complexation reaction between tiron and iron(III) were used to evaluate the effect four mixing chambers of various volumes (1.2-4.0 mL) have on the degree and reproducibility of zone penetration within a sequential injection (SI) system. As a consequence of this study a fully computerized SI system for the spectrophotometric determination of iron(III) in mine waters is proposed. Using a 1.2 mL mixing chamber placed before the detector, the method is able to analyze 24 samples per h with an average relative standard deviation of 0.28%. The calibration graph is linear between 0 and 200 mg/L with a 3s detection limit of 0.03 mg/L.
Iron(III) Spectrophotometry Sequential injection Mixing chamber Zone penetrating Complexation