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Fabrication of chemical sensor for organochlorine pesticide detection using colloidal gold nanoparticles

Published online by Cambridge University Press:  16 July 2018

Puja Goel*
Affiliation:
Physics Department, College of Basic Sciences and Humanities, G.B. Pant University of Agriculture and Technology, Pantnagar, 263145, India
Manju Arora
Affiliation:
CSIR-National Physical Laboratory, Dr. K.S. Krishnan Marg, New Delhi, 110012, India
*
Address all correspondence to Puja Goel at [email protected]
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Abstract

Gold nanoparticles (GNPs) of ~8 nm in diameter were used for the detection of organochlorine endosulfan pesticide (ESP) as colorimetric sensor and the design of GNP-based chemical sensor for its quantitative estimation has also been proposed. The original wine red color of GNPs changes into various shades of blue after the addition of different concentrations of ESP solutions. A GNP-based sensing electrode has been used for designing of ESP detection chemical sensor at ambient temperature. The response and sensitivity of ESP sensor parameters are obtained from their recovery curves of the change in resistance versus time.

Type
Research Letters
Copyright
Copyright © Materials Research Society 2018 

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