Please use this identifier to cite or link to this item: https://ir.swu.ac.th/jspui/handle/123456789/12397
ชื่อเรื่อง: A transparency sheet-based colorimetric device for simple determination of calcium ions using induced aggregation of modified gold nanoparticles
ผู้แต่ง: Duenchay P.
Chailapakul O.
Siangproh W.
Keywords: calcium ion
gold nanoparticle
polypropylene
calcium
gold
ion
metal nanoparticle
analytical parameters
Article
atomic absorption spectrometry
chemical modification
colorimetry
concentration (parameter)
cost effectiveness analysis
drug analysis
drug determination
electrochemical detection
limit of detection
limit of quantitation
measurement accuracy
pH
process optimization
simulation
static electricity
stereoselectivity
surface plasmon resonance
ultraviolet visible spectrophotometry
urine sampling
validation process
zeta potential
chemistry
colorimetry
human
procedures
reproducibility
ultraviolet spectrophotometry
urinalysis
Calcium
Colorimetry
Gold
Humans
Ions
Metal Nanoparticles
Reproducibility of Results
Spectrophotometry, Ultraviolet
Urinalysis
วันที่เผยแพร่: 2019
บทคัดย่อ: A simple and novel transparency sheet-based colorimetric detection device using gold nanoparticles (AuNPs) modified by 4-Amino-6-hydroxy-2-mercaptopyrimidine monohydrate (AHMP) was fabricated and developed for the determination of calcium ions (Ca2+). The detection was based on a colorimetric reaction as a result of the aggregation of modified AuNPs induced by Ca2+ due to the ability to form strong electrostatic interactions between positively charged Ca2+ and negatively charged modified AuNPs. Probe solution changes color from red to blue in the presence of Ca2+ and can be observed by the naked eyes. To verify the complete self-assembly of the AHMP onto the AuNP surface, the modified AuNPs were characterized using ultraviolet–visible spectroscopy and zeta potential measurements. Under optimal conditions, a quantitative linearity was 10 to 100 ppm (R2 = 0.9877) with a detection limit of 3.05 ppm. The results obtained by the developed method were in good agreement with standard atomic absorption spectrometry (AAS) results and demonstrated that this method could reliably measure Ca2+. Overall, this novel alternative approach presents a low-cost, simple, sensitive, rapid, and promising device for the detection of Ca2+. © 2019 by the authors. Licensee MDPI, Basel, Switzerland.
URI: https://ir.swu.ac.th/jspui/handle/123456789/12397
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85068485265&doi=10.3390%2fijms20122954&partnerID=40&md5=f8858ed3c74c9a7641e1aeb7f3178ccb
ISSN: 16616596
Appears in Collections:Scopus 1983-2021

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