NDLI: Determination of acetamiprid by a colorimetric method based on the aggregation of gold nanoparticles

Content Provider	Springer Nature Link
Author	Xu, Qin Du, Shi Jin, Gen di Li, Hongbo Hu, Xiao Ya
Copyright Year	2011
Abstract	A method was developed for the detection of the insecticide acetamiprid based on the strong interaction of the cyano group of acetamiprid with gold nanoparticles (AuNPs). The interaction results in the aggregation of gold nanoparticles and is accompanied by a color change from red to purple. The concentration of acetamiprid can be determined qualitatively and quantitatively by visually monitoring the color change or by using a spectrometer. Transmittance electron microscopy and UV-vis spectroscopy have been used to characterize the process. The experimental parameters were optimized with regard to the size of the AuNPs, pH, and incubation time. Under optimal experimental conditions, linear relationships between the logarithm of the concentration of acetamiprid and the absorbance were found over the range of 0.66 to 6.6 μM for AuNPs with diameters of 22.0 ± 1.0 nm and of 6.6–66 μM for AuNPs with diameters of 15.0 ± 1.0 nm. This method was successfully applied to detect acetamiprid in vegetables. Figure A method was developed for the detection of acetamiprid based on the strong interaction of the cyano group of acetamiprid with gold nanoparticles. This method is rapid, sensitive and low-cost. It can be used for pesticide residues detection.
Starting Page	323
Ending Page	329
Page Count	7
File Format	PDF
ISSN	00263672
Journal	Microchimica Acta
Volume Number	173
Issue Number	3-4
e-ISSN	14365073
Language	English
Publisher	Springer Vienna
Publisher Date	2011-02-19
Publisher Place	Vienna
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Colorimetry Gold nanoparticles Aggregation Acetamiprid Nanochemistry Analytical Chemistry Characterization and Evaluation of Materials Microengineering Nanotechnology
Content Type	Text
Resource Type	Article
Subject	Analytical Chemistry

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