Determination of hypochlorite in water using a chemiluminescent test strip [An article from: Analytica Chimica Acta]

This digital document is a journal article from Analytica Chimica Acta, published by Elsevier in 2004. The article is delivered in HTML format and is available in your Amazon.com Media Library immediately after purchase. You can view it with any web browser.

Description:
We have developed a selective and reusable chemiluminescent test strip to determine hypochlorite. The hypochlorite-sensitive test strip contains a 10mm x 9mm piece of anionic cellulose paper in fluoresceinate cycle, glued to a 10mm x 4cm x 0.5mm polyester strip. The measurement of the chemiluminescence in a luminometer when 1ml of sample is injected into a conventional cell containing the strip makes it possible to determine hypochlorite. The composition of the membrane and reaction conditions have been adjusted to obtain adequate sensitivity and selectivity. The test strip responded linearly to hypochlorite over two linear ranges, the first 2.0-10.3mgL^-^1 and the second 10.3-51.4mgL^-^1, with a detection limit of 0.4mgL^-^1. The reproducibility using the same disposable test strip at a medium level of the range was 6.6%, as relative standard deviation (R.S.D.), and 12.3% using different test strips. The procedure was applied to the determination of hypochlorite in different types of waters.