Please use this identifier to cite or link to this item: https://ir.swu.ac.th/jspui/handle/123456789/11913
ชื่อเรื่อง: Application of modifier-free gold nanoparticle colorimetric sensing for rapid screening and detection of vitamin B1
ผู้แต่ง: Duenchay P.
Kaewjua K.
Chailapakul O.
Siangproh W.
Keywords: Color
Colorimetry
Image processing
Metal nanoparticles
Colorimetric sensing
Colorimetric sensors
Limit of quantitations
Linear relationships
Positively charged
Quantitative measurement
Selective determination
Unmodified gold nanoparticles
Gold nanoparticles
ascorbic acid
buffer
cyanocobalamin
gold nanoparticle
nicotinamide
pantothenic acid
polymer
pyridoxine
riboflavin
thiamine
unclassified drug
vitamin b7
vitamin b9
accuracy
Article
calibration
colorimetry
image processing
incubation time
limit of quantitation
porosity
priority journal
screening
static electricity
ultraviolet visible spectrophotometry
urinalysis
zeta potential
วันที่เผยแพร่: 2020
บทคัดย่อ: In this report, we present a transparency sheet-based colorimetric sensor as an alternative platform for the simple, sensitive and selective determination of vitamin B1 in urine samples by using unmodified gold nanoparticles (AuNPs). Samples presenting different concentrations of vitamin B1 were evaluated. The specific analysis is based on the aggregation of AuNPs by vitamin B1 due to the ability to form strong electrostatic interactions between positively charged vitamin B1 and negatively charged AuNPs. In the presence of vitamin B1, a distinctive color change in the AuNPs from red to blue was visualized by the naked eye within 10 minutes without the requirement for surface modification. For quantitative measurement using image processing, a good linear relationship (R2= 0.9913) between the vitamin B1 concentration and average red intensity was obtained in the range of 40-200 ppb. The limit of detection (LOD) and the limit of quantitation (LOQ) for vitamin B1 were found to be 3.002 ppb (S/B = 3) and 10.006 ppb (S/B = 10), respectively. The characteristics of the developed sensors were investigated for precision, accuracy, and sensitivity, and they were validated by classic methods. Statistical analysis proved that the developed sensors were precise, sensitive and accurate and that they can be used effectively for the analysis of vitamin B1 in urine samples. © The Royal Society of Chemistry and the Centre National de la Recherche Scientifique 2020.
URI: https://ir.swu.ac.th/jspui/handle/123456789/11913
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85086181365&doi=10.1039%2fd0nj01401j&partnerID=40&md5=f125613c11623438bd3d4ae5c9a0c8cf
ISSN: 11440546
Appears in Collections:Scopus 1983-2021

Files in This Item:
There are no files associated with this item.


Items in SWU repository are protected by copyright, with all rights reserved, unless otherwise indicated.