Pesticide colorimetric sensor based on silver nanoparticles modified by L-cysteine

Abdul Kodir, Cuk Imawan, Indra Setia Permana, Windri Handayani

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

5 Citations (Scopus)

Abstract

This work investigated a new colorimetric sensor for pesticide based on L-cysteine-modified silver nanoparticles (L-cys-AgNPs). The colorimetric sensor was prepared by reducing silver nitrate solutions in the existence of Diospyros blancoi leaf infusion which were then mixed by L-cysteine solution. The L-cys-AgNPs were characterized by UV-Visible Spectrophotometer measuring optical absorbance. Pesticides, namely monosultap and cypermethrin, were detected by mixing them with silver nanoparticles. The fresh L-cys-AgNPs had brownish yellow color inasmuch as surface plasmon resonance absorbance centered at 422 nm. NaCl stimulated color change from brownish yellow to clear which was relied on pesticide concentration of 20, 50 and 100 ppm. In the presence of cypermethrin, L-cys-AgNPs color turned clear and the peak absorbance dropped to 0.17 from 1.15. However, the effect of monosultap toward L-cys-AgNPs was negligible. This sensor allows a direct quantitative check for the detection of cypermethrin.

Original languageEnglish
Title of host publicationProceeding - 2016 International Seminar on Sensors, Instrumentation, Measurement and Metrology, ISSIMM 2016
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages43-47
Number of pages5
ISBN (Electronic)9781509011285
DOIs
Publication statusPublished - 3 Jan 2017
Event2016 International Seminar on Sensors, Instrumentation, Measurement and Metrology, ISSIMM 2016 - Malang, East Java, Indonesia
Duration: 10 Aug 201611 Aug 2016

Publication series

NameProceeding - 2016 International Seminar on Sensors, Instrumentation, Measurement and Metrology, ISSIMM 2016

Conference

Conference2016 International Seminar on Sensors, Instrumentation, Measurement and Metrology, ISSIMM 2016
Country/TerritoryIndonesia
CityMalang, East Java
Period10/08/1611/08/16

Keywords

  • Colorimetric
  • l-cysteine
  • pesticide
  • sensor
  • silver nanoparticles

Fingerprint

Dive into the research topics of 'Pesticide colorimetric sensor based on silver nanoparticles modified by L-cysteine'. Together they form a unique fingerprint.

Cite this