Publication: Simple and fast colorimetric detection of inorganic arsenic selectively adsorbed onto ferrihydrite-coated silica gel using silver nanoplates
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Issued Date
2016
Resource Type
File Type
application/pdf
ISSN
399140
Other identifier(s)
2-s2.0-84960847693
Rights Holder(s)
Scopus
Bibliographic Citation
Talanta. Vol 153, (2016), p.197-202
Suggested Citation
Siangproh W., Chailapakul O., Songsrirote K. Simple and fast colorimetric detection of inorganic arsenic selectively adsorbed onto ferrihydrite-coated silica gel using silver nanoplates. Talanta. Vol 153, (2016), p.197-202. doi:10.1016/j.talanta.2016.03.028 Retrieved from: https://hdl.handle.net/20.500.14740/5372
Author(s)
Abstract
The optical detection for inorganic arsenic (As) semi-quantitative determination is presented by using silver nanoplates (AgNPls). The color of AgNPs is immediately changed in the presence of As(III) and As(V) with the same sensitivity. To improve the selectivity of AgNPls for As detection, ferrihydrite-coated silica gel (SiO2-Fh) was specifically exploited as adsorbent for arsenic prior to As detection by AgNPls. The developed method provides the detection limit of 0.5 ppm with the detection range between 0.5 ppm and 30.0 ppm for As determination observed with naked eye, and allows to determine total inorganic arsenic. This is the first report of As detection approach combining As removal technology together with nanotechnology. This combined technique provides a rapid, sensitive and selective method for monitoring As levels in aqueous samples, and can be employed as a testing field kit to screen arsenic contamination outside of a laboratory. © 2016 Elsevier B.V. All rights reserved.
Subject(s)
Arsenic
Color
Colorimetry
Nanostructures
Silica gel
Silver
Silver compounds
Arsenic contamination
Colorimetric detection
Combined techniques
Detection approach
Ferrihydrites
Optical detection
Quantitative determinations
Silver nanoplates
Silica
Arsenic
Ferric ion
Ferric oxyhydroxide
Metal nanoparticle
Silica gel
Silicon dioxide
Silver
Colorimetry
Arsenic
Colorimetry
Ferric Compounds
Metal Nanoparticles
Silica Gel
Silicon Dioxide
Silver
Color
Colorimetry
Nanostructures
Silica gel
Silver
Silver compounds
Arsenic contamination
Colorimetric detection
Combined techniques
Detection approach
Ferrihydrites
Optical detection
Quantitative determinations
Silver nanoplates
Silica
Arsenic
Ferric ion
Ferric oxyhydroxide
Metal nanoparticle
Silica gel
Silicon dioxide
Silver
Colorimetry
Arsenic
Colorimetry
Ferric Compounds
Metal Nanoparticles
Silica Gel
Silicon Dioxide
Silver