Selective determination of chloride ions using silver triangular nanoplates and dynamic gas extraction

Selective determination of chloride ions using silver triangular nanoplates and dynamic gas extraction

[Display omitted] •A novel selective method for determination of chlorides.•It combines optical detection using nanoparticles and dynamic gas extraction.•Dynamic gas extraction improves remarkably selectivity of the determination.•Tolerance limits of about 105 in presence of common inorganic ions.•D...

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Bibliographic Details
Published in:Sensors and actuators. B, Chemical Chemical, 2018-03, Vol.256, p.699-705
Main Authors: Gorbunova, Marina O., Shevchenko, Anastasiya V., Apyari, Vladimir V., Furletov, Aleksei A., Volkov, Pavel A., Garshev, Alexey V., Dmitrienko, Stanislava G.
Format: Article
Language:eng
Subjects:
Chloride
Chloride ions
Chlorides
Chlorine
Colorimetry
Digital colorimetry
Dynamic gas extraction
Extraction processes
Formulations
Ions
Metal nanoparticles
Nanoparticles
Nanostructured ceramics
Pretreatment
Selective detection
Selectivity
Sensors
Silver triangular nanoplates
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Summary:[Display omitted] •A novel selective method for determination of chlorides.•It combines optical detection using nanoparticles and dynamic gas extraction.•Dynamic gas extraction improves remarkably selectivity of the determination.•Tolerance limits of about 105 in presence of common inorganic ions.•Direct determination of chlorides in samples is possible with no sample pretreatment. In this article, we propose a novel selective method for determination of chlorides using paper modified with silver triangular nanoplates. It is based on simultaneous in-situ conversion of chloride ions into chlorine and its dynamic gas extraction with digital colorimetric detection using convenient nanoparticle-modified paper test strips. The dynamic gas extraction improves remarkably selectivity of the nanoparticle-based detection. A simple and inexpensive setup allowing for realization of this combination is described. The limit of chloride ions detection is 0.04mg L−1 and the determination range is 0.1–1.5mg L−1. This determination can be successfully carried out in solutions containing at least 7·104 greater molar amounts of common inorganic ions. Due to the high selectivity, the direct determination of chlorides in pharmaceutical formulations, river water and tomato juice is possible with no sample pretreatment. The proposed approach seems to be promising for nanoparticle-based determinations of other analytes that can be transformed to volatile derivatives.
ISSN:0925-4005
1873-3077