File(s) under permanent embargo
A simple and sensitive method for the determination of iodide and iodate in raw, ultraviolet- and ozone-treated aquacultural seawater samples using ion chromatography coupled to an ultraviolet detector
journal contribution
posted on 2023-05-18, 20:53 authored by Estrella Sanz RodriguezEstrella Sanz Rodriguez, Setiawan, AN, Pope, S, Paul HaddadPaul Haddad, Nesterenko, PN, Brett PaullBrett PaullA new ion chromatographic method for the speciation of iodine in aquacultural seawater samples has been developed. This simple, isocratic, non-suppressed ion chromatographic method, which uses an electrolytically generated potassium hydroxide eluent with a high capacity anion exchange column (Dionex IonPac AS20, 250 × 4 mm ID, 7.5 μm), allows the direct injection of undiluted seawater samples, with detection based upon standard ultraviolet absorbance (226 nm). Using a sample injection volume of 125 μL, a method limit of detection for iodide of 9.45 nM in seawater was achieved, with an absolute detection limit of 0.15 ng. Speciation (iodide/iodate) was accomplished via off-line sample reduction using ascorbic acid (0.2 M) and HCl (6 M). The new method was applied to the study of iodine speciation in raw, ultraviolet- and ozone-treated aquacultural seawater samples.
Funding
Australian Research Council
History
Publication title
Analytical MethodsVolume
8Issue
28Pagination
5587-5595ISSN
1759-9660Department/School
School of Natural SciencesPublisher
Royal Society of ChemistryPlace of publication
United KingdomRights statement
© The Royal Society of Chemistry 2016Repository Status
- Restricted