OceanRep
Determination of cobalt and iron in estuarine and coastal waters using flow injection with chemiluminescence detection.
Cannizzaro, V., Bowie, A. R., Sax, A., Achterberg, Eric P. and Worsfold, P. J. (2000) Determination of cobalt and iron in estuarine and coastal waters using flow injection with chemiluminescence detection. Analyst, 125 (1). pp. 51-57. DOI 10.1039/a907651d.
Text
a907651d.pdf - Published Version Restricted to Registered users only Download (189kB) | Contact |
Abstract
Flow injection with chemiluminescence detection (FI-CL) was used to determine cobalt and iron in estuarine and coastal waters. Cobalt(II) was determined by means of a pyrogallol-hydrogen peroxide-sodium hydroxide reaction in the presence of methanol and the surfactant cetyltrimethylammonium bromide (CTAB). With pyrogallol, the sensitivity was enhanced compared with the traditional reagent, gallic acid. The practical limit of detection in sea-water was 5 pM (3s) and there was good agreement with certified values for the sea-water CRMs NASS-5 (0.16 ± 0.01 nM), CASS-3 (0.60 ± 0.09 nM) and SLEW-2 (0.93 ± 0.13 nM). Results for an Irish Sea sample gave good agreement with data obtained using cathodic stripping voltammetry. Iron(II + III) was determined using a luminol reaction with dissolved oxygen as the oxidant. The practical limit of detection was 40 pM (3s) and results from shipboard analysis of the CRM NASS-4 (1.95 ± 0.14 nM) were in good agreement with the certified value (1.88 ± 0.29 nM). Field evaluation of the instrumentation and analytical methods was achieved through a series of local surveys in the Tamar Estuary (UK), from which environmental data are presented.
Document Type: | Article |
---|---|
Refereed: | Yes |
Open Access Journal?: | No |
Publisher: | Royal Society of Chemistry |
Date Deposited: | 04 Feb 2014 10:48 |
Last Modified: | 04 Feb 2014 10:48 |
URI: | https://oceanrep.geomar.de/id/eprint/21824 |
Actions (login required)
View Item |
Copyright 2023 | GEOMAR Helmholtz-Zentrum für Ozeanforschung Kiel | All rights reserved
Questions, comments and suggestions regarding the GEOMAR repository are welcomed
at bibliotheksleitung@geomar.de !