Please use this identifier to cite or link to this item: https://ir.swu.ac.th/jspui/handle/123456789/13417
ชื่อเรื่อง: Simple and fast colorimetric detection of inorganic arsenic selectively adsorbed onto ferrihydrite-coated silica gel using silver nanoplates
ผู้แต่ง: Siangproh W.
Chailapakul O.
Songsrirote K.
Keywords: 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
วันที่เผยแพร่: 2016
บทคัดย่อ: 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.
URI: https://ir.swu.ac.th/jspui/handle/123456789/13417
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84960847693&doi=10.1016%2fj.talanta.2016.03.028&partnerID=40&md5=8f11d8b7a703f9441fbf720c0bd6dac9
ISSN: 399140
Appears in Collections:Scopus 1983-2021

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