Determination of trace amounts of bromide by flow injection/stopped-flow detection technique using kinetic-spectrophotometric method

A simple, sensitive and selective method for the determination of bromide in seawater by using a flow injection/stopped-flow detection technique was examined. The detection system was developed for a new kinetic-spectrophotometric determination of bromide in the presence of chloride matrix without a...

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Main Authors: K. Uraisin, D. Nacapricha, S. Lapanantnoppakhun, K. Grudpan, S. Motomizu
Format: Journal
Published: 2018
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http://cmuir.cmu.ac.th/jspui/handle/6653943832/62138
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Institution: Chiang Mai University
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spelling th-cmuir.6653943832-621382018-09-11T09:22:26Z Determination of trace amounts of bromide by flow injection/stopped-flow detection technique using kinetic-spectrophotometric method K. Uraisin D. Nacapricha S. Lapanantnoppakhun K. Grudpan S. Motomizu Chemistry A simple, sensitive and selective method for the determination of bromide in seawater by using a flow injection/stopped-flow detection technique was examined. The detection system was developed for a new kinetic-spectrophotometric determination of bromide in the presence of chloride matrix without any extraction and/or separation. The detection was based on the kinetic effect of bromide on the oxidation of methylene blue (MB) with hydrogen peroxide in a strongly acidic solution. Large amounts of chloride could enhance the sensitivity of the method as an activator. The decolorisation of the blue color of MB was used for the spectrophotometric determination of bromide at 746 nm. A stopped-flow approach was used to improve the sensitivity of the measurement and provide good linearity of the calibration over the range of 0-3.2 μg ml-1of bromide. The relative standard deviation was 0.74% for the determination of 2.4 μg ml-1bromide (n = 5). The detection limit (3σ) was 0.1 μg ml-1with a sampling frequency of 12 h-1. The influence of potential interfering ions was studied. The proposed method was applied to the determination of bromide in seawater samples and provided satisfactory results. © 2005 Elsevier B.V. All rights reserved. 2018-09-11T09:22:26Z 2018-09-11T09:22:26Z 2005-12-15 Journal 00399140 2-s2.0-27744454582 10.1016/j.talanta.2005.07.055 https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=27744454582&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/62138
institution Chiang Mai University
building Chiang Mai University Library
country Thailand
collection CMU Intellectual Repository
topic Chemistry
spellingShingle Chemistry
K. Uraisin
D. Nacapricha
S. Lapanantnoppakhun
K. Grudpan
S. Motomizu
Determination of trace amounts of bromide by flow injection/stopped-flow detection technique using kinetic-spectrophotometric method
description A simple, sensitive and selective method for the determination of bromide in seawater by using a flow injection/stopped-flow detection technique was examined. The detection system was developed for a new kinetic-spectrophotometric determination of bromide in the presence of chloride matrix without any extraction and/or separation. The detection was based on the kinetic effect of bromide on the oxidation of methylene blue (MB) with hydrogen peroxide in a strongly acidic solution. Large amounts of chloride could enhance the sensitivity of the method as an activator. The decolorisation of the blue color of MB was used for the spectrophotometric determination of bromide at 746 nm. A stopped-flow approach was used to improve the sensitivity of the measurement and provide good linearity of the calibration over the range of 0-3.2 μg ml-1of bromide. The relative standard deviation was 0.74% for the determination of 2.4 μg ml-1bromide (n = 5). The detection limit (3σ) was 0.1 μg ml-1with a sampling frequency of 12 h-1. The influence of potential interfering ions was studied. The proposed method was applied to the determination of bromide in seawater samples and provided satisfactory results. © 2005 Elsevier B.V. All rights reserved.
format Journal
author K. Uraisin
D. Nacapricha
S. Lapanantnoppakhun
K. Grudpan
S. Motomizu
author_facet K. Uraisin
D. Nacapricha
S. Lapanantnoppakhun
K. Grudpan
S. Motomizu
author_sort K. Uraisin
title Determination of trace amounts of bromide by flow injection/stopped-flow detection technique using kinetic-spectrophotometric method
title_short Determination of trace amounts of bromide by flow injection/stopped-flow detection technique using kinetic-spectrophotometric method
title_full Determination of trace amounts of bromide by flow injection/stopped-flow detection technique using kinetic-spectrophotometric method
title_fullStr Determination of trace amounts of bromide by flow injection/stopped-flow detection technique using kinetic-spectrophotometric method
title_full_unstemmed Determination of trace amounts of bromide by flow injection/stopped-flow detection technique using kinetic-spectrophotometric method
title_sort determination of trace amounts of bromide by flow injection/stopped-flow detection technique using kinetic-spectrophotometric method
publishDate 2018
url https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=27744454582&origin=inward
http://cmuir.cmu.ac.th/jspui/handle/6653943832/62138
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