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Citation
Tags
HERO ID
7007744
Reference Type
Journal Article
Title
Gold nanoprism/Tollens' reagent complex as plasmonic sensor in headspace single-drop microextraction for colorimetric detection of formaldehyde in food samples using smartphone readout
Author(s)
Qi, T; Shi, H; Lee, H; Xu, M; Yao, Yao; Chen, W; Xu, M; Tang, S; Shen, Wei; Kong, D; Cai, X; ,
Year
2020
Is Peer Reviewed?
1
Journal
Talanta
ISSN:
0039-9140
EISSN:
1873-3573
Publisher
ELSEVIER
Location
AMSTERDAM
Volume
220
Page Numbers
121388
Language
English
PMID
32928410
DOI
10.1016/j.talanta.2020.121388
Web of Science Id
WOS:000571477400005
URL
https://www.proquest.com/scholarly-journals/gold-nanoprism-tollens-reagent-complex-as/docview/2477624070/se-2?accountid=171501
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Abstract
In this work, an assay with high sensitivity and selectivity for the detection of formaldehyde (FA) is presented. The assay applied a gold nanoprism/Tollens' reagent (Au-np/TR) complex as the sensor used in headspace single-drop microextraction (HS-SDME). A surface plasmon resonance signal enhancement as well as color change was caused by the formation of Au@Ag-np after a redox reaction between FA and TR during the HSSDME process. With the utilization of smartphone nanocolorimetry (SNC), the FA could be detected and quantified. For HS-SDME-SNC, a linearity calibration curve ranging from 0.1 to 100 mu M was obtained, and the limit of detection was determined to be 30 nM. Successful attempts to determine FA were demonstrated by analysis of the analyte in (adulterated) raw food samples (octopus and chicken flesh). Matrix effects from real samples were avoided by using HS-SDME, and only a 3-mu L droplet of solvent was needed in the assay.
Keywords
article; Gold nanoprism; Tollens' reagent; Smartphone nanocolorimetry; Formaldehyde; Headspace single-drop microextraction; calibration; chicken meat; colorimetry; detection limit; droplets; headspace analysis; microextraction; mobile telephones; nanogold; nanoprisms; raw foods; redox reactions; solvents; surface plasmon resonance
Tags
IRIS
•
Formaldehyde [archived]
HAWC
Mechanistic inflammation
Excluded
Search Update 2018-2021
Inflammation/Reactive oxygen Species
WoS
•
IRIS Formaldehyde (Inhalation) [Final 2024]
Literature Indexing
WoS
2021 Systematic Evidence Map
Literature Identification
Inflammation and Immune-Related Mechanistic Studies
Excluded
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