Literature DB >> 21035607

Highly sensitive trace analysis of paraquat using a surface-enhanced Raman scattering microdroplet sensor.

Rongke Gao1, Namhyun Choi, Soo-Ik Chang, Seong Ho Kang, Joon Myong Song, Seong In Cho, Dong Woo Lim, Jaebum Choo.   

Abstract

We report a rapid and highly sensitive trace analysis of paraquat (PQ) in water using a surface-enhanced Raman scattering (SERS)-based microdroplet sensor. Aqueous samples of PQ, silver nanoparticles, and NaCl as the aggregation agent were introduced into a microfluidic channel and were encapsulated by a continuous oil phase to form a microdroplet. PQ molecules were adsorbed onto particle surfaces in isolated droplets by passing through the winding part of the channel. Memory effects, caused by the precipitation of nanoparticle aggregates on channel walls, were removed because the aqueous droplets were completely isolated by a continuous oil phase. The limit of detection (LOD) of PQ in water, determined by the SERS-based microdroplet sensor, was estimated to be below 2×10(-9) M, and this low detection limit was enhanced by one to two orders of magnitude compared to conventional analytical methods.
Copyright © 2010 Elsevier B.V. All rights reserved.

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Year:  2010        PMID: 21035607     DOI: 10.1016/j.aca.2010.09.036

Source DB:  PubMed          Journal:  Anal Chim Acta        ISSN: 0003-2670            Impact factor:   6.558


  6 in total

Review 1.  Point-of-care testing in the early diagnosis of acute pesticide intoxication: The example of paraquat.

Authors:  Ting-Yen Wei; Tzung-Hai Yen; Chao-Min Cheng
Journal:  Biomicrofluidics       Date:  2018-01-19       Impact factor: 2.800

2.  Highly Sensitive Fluorescent Probe for Detection of Paraquat Based on Nanocrystals.

Authors:  Zeinab Pourghobadi; Hadis Makanali; Hakimeh Zare
Journal:  J Fluoresc       Date:  2021-01-19       Impact factor: 2.217

Review 3.  Rapid field trace detection of pesticide residue in food based on surface-enhanced Raman spectroscopy.

Authors:  Pei Liang; Wenwen Chen; Zhexiang Tang; Chen Li; Kunyue Xiao; Shangzhong Jin; Dejiang Ni; Zhi Yu
Journal:  Mikrochim Acta       Date:  2021-10-07       Impact factor: 5.833

4.  Histopathological changes induced by paraquat on some tissues of gourami fish (Trichogaster trichopterus).

Authors:  M Banaee; M H Davoodi; F Zoheiri
Journal:  Open Vet J       Date:  2013-03-30

5.  Rapid Simultaneous Determination of Paraquat and Creatinine in Human Serum Using a Piece of Paper.

Authors:  Tsui-Hsuan Chang; Kuo-Hao Tung; Po-Wen Gu; Tzung-Hai Yen; Chao-Min Cheng
Journal:  Micromachines (Basel)       Date:  2018-11-12       Impact factor: 2.891

Review 6.  Surface-Enhanced Raman Scattering Spectroscopy and Microfluidics: Towards Ultrasensitive Label-Free Sensing.

Authors:  Krishna Kant; Sara Abalde-Cela
Journal:  Biosensors (Basel)       Date:  2018-06-29
  6 in total

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