caa a22 4500 445880716 CHVBK 20180317145542.0 cr unu---uuuuu 170323e20110601xx s 000 0 eng 10.1007/s00604-011-0562-y doi (NATIONALLICENCE)springer-10.1007/s00604-011-0562-y Determination of acetamiprid by a colorimetric method based on the aggregation of gold nanoparticles [Elektronische Daten] [Qin Xu, Shi Du, Gen-di Jin, Hongbo Li, Xiao Hu] 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 6.6μM for AuNPs with diameters of 22.0 ± 1.0nm and of 6.6-66μM for AuNPs with diameters of 15.0 ± 1.0nm. 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. Springer-Verlag, 2011 Colorimetry nationallicence Gold nanoparticles nationallicence Aggregation nationallicence Acetamiprid nationallicence Xu Qin College of Chemistry and Chemical Engineering, Yangzhou University, 225002, Yangzhou, China aut Du Shi College of Chemistry and Chemical Engineering, Yangzhou University, 225002, Yangzhou, China aut Jin Gen-di College of Chemistry and Chemical Engineering, Yangzhou University, 225002, Yangzhou, China aut Li Hongbo College of Chemistry and Chemical Engineering, Yangzhou University, 225002, Yangzhou, China aut Hu Xiao College of Chemistry and Chemical Engineering, Yangzhou University, 225002, Yangzhou, China aut Microchimica Acta Springer Vienna 173/3-4(2011-06-01), 323-329 0026-3672 173:3-4<323 2011 173 604 https://doi.org/10.1007/s00604-011-0562-y text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00604-011-0562-y text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Xu Qin College of Chemistry and Chemical Engineering, Yangzhou University, 225002, Yangzhou, China aut NATIONALLICENCE 700 1- Du Shi College of Chemistry and Chemical Engineering, Yangzhou University, 225002, Yangzhou, China aut NATIONALLICENCE 700 1- Jin Gen-di College of Chemistry and Chemical Engineering, Yangzhou University, 225002, Yangzhou, China aut NATIONALLICENCE 700 1- Li Hongbo College of Chemistry and Chemical Engineering, Yangzhou University, 225002, Yangzhou, China aut NATIONALLICENCE 700 1- Hu Xiao College of Chemistry and Chemical Engineering, Yangzhou University, 225002, Yangzhou, China aut NATIONALLICENCE 773 0- Microchimica Acta Springer Vienna 173/3-4(2011-06-01), 323-329 0026-3672 173:3-4<323 2011 173 604 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer