Simultaneous determination of total iron and chromium(VI) in wastewater using a flow injection system based on the sandwich technique

An illustrated description is given of a flow injection system for the simultaneous determination of total iron and hexavalent chromium in waste waters, based on the so-called sandwich technique in which the sample was injected between 2 different carrier solutions. Both metals were determined spect...

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Bibliographic Details
Published in:Analyst (London) 1989-01, Vol.114 (11), p.1465-1468
Main Authors: Araujo, AN, Lima, JLFC, Rangel, AOSS, Alonso, J, Bartroli, J, Barber, R
Format: Article
Language:English
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Summary:An illustrated description is given of a flow injection system for the simultaneous determination of total iron and hexavalent chromium in waste waters, based on the so-called sandwich technique in which the sample was injected between 2 different carrier solutions. Both metals were determined spectrophotometrically at 526 nm with a single detector over the range 0.2-10 ppm. The standard deviations were 0.09 ppm for total iron and 0.08 ppm for hexavalent chromium.
ISSN:0003-2654
1364-5528
DOI:10.1039/AN9891401465