Thin layer coulometric determination of nitrate in fresh waters

Manzar Sohail; Roland De Marco; Krystina Lamb; Eric Bakker

doi:10.1016/j.aca.2012.07.026

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Thin layer coulometric determination of nitrate in fresh waters

Journal article

Open access

Peer reviewed

Thin layer coulometric determination of nitrate in fresh waters

Manzar Sohail, Roland De Marco, Krystina Lamb and Eric Bakker

Analytica Chimica Acta, Vol.744, pp.39-44

2012

DOI: https://doi.org/10.1016/j.aca.2012.07.026

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Abstract

ion selective electrode

coulometry

nutrients

nitrate

environmental analysis

A nitrate ion-selective electrode (ISE) employing a permeable tubular membrane impregnated with a conventional ISE cocktail has been used successfully in the coulometric analysis of nitrate in fresh waters. The liquid ISE membrane comprising a nitrate ionophore [tridodecylmethylammonium nitrate (TDMAN)], lipophilic electrolyte [tetradodecyl-ammoniumtetrakis(4-chlorophenyl)borate (ETH 500)] and plasticizer [bis(3-ethyl-hexyl)sebacate (DOS)] was supported on a porous polypropylene tube. Coulometric analysis with the tubular membrane ISE showed that nitrate could be detected in the range 10-100 μM with a precision of 2.3% relative standard deviation (RSD), limit of detection of 1.1 μM and relative accuracy of 4.4% compared to a certified reference material (CRM) Lake sample.

Details

Title: Thin layer coulometric determination of nitrate in fresh waters
Authors: Manzar Sohail (Author) - University of the Sunshine Coast
Roland De Marco (Author) - University of the Sunshine Coast
Krystina Lamb (Author) - University of the Sunshine Coast - Faculty of Science, Health, Education and Engineering
Eric Bakker (Author) - University of Geneva, Switzerland
Publication details: Analytica Chimica Acta, Vol.744, pp.39-44
Publisher: Elsevier BV
Date published: 2012
DOI: 10.1016/j.aca.2012.07.026
ISSN: 0003-2670
Organisation Unit: School of Science and Engineering - Legacy; University of the Sunshine Coast, Queensland; Office of the Deputy Vice-Chancellor (Research and Innovation)
Language: English
Record Identifier: 99450508202621
Output Type: Journal article

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Collaboration types: Domestic collaboration; International collaboration
Web Of Science research areas: Chemistry, Analytical