A novel and selective multi-emission chemiluminescence system for the quantification of deltamethrin in food samples

Iman Al Yahyai, Javad Hassanzadeh, Haider A.J. Al-Lawati*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)

Abstract

A paper-based analytical device (PADs) combined with a powerful chemiluminescence (CL) system was established for the determination of deltamethrin (DM), based on the enhancing effect of polyphosphate (PP) on graphene quantum dots (GQDs)-KMnO4 CL reaction. A possible mechanism for the obtained emission was proposed using the CL spectra, fluorescence and ultraviolet-visible patterns. The reaction of KMnO4 and GQDs can lead to generation of GQDs in excited state (GQDs*), which can emit at 490 nm. Interestingly, PP changes the CL mechanism and the main emitter becomes Mn2+ instead of GQDs leading to a strong emission at 695 nm. Furthermore, the obtained multi-emission CL system was examined for analytical applications. The initial experiments showed that the amplified CL emission of the GQDs-KMnO4 system was selectively quenched in the presence of trace levels of DM, probably due to its effective interaction with GQDs or reaction with KMnO4. This observation led to a facile, reliable and sensitive PADs-CL probe, developed for the determination of DM residue in food samples. Using this CL system and under the optimized experimental conditions, the generated signal is decreased by increasing DM concentration in the range of 0.3−10 μg mL-1 with limit of detection (LOD) of 0.15 μg mL-1.

Original languageEnglish
Article number128927
JournalSensors and Actuators, B: Chemical
Volume327
DOIs
Publication statusPublished - Jan 15 2021
Externally publishedYes

Keywords

  • Chemiluminescence
  • Deltamethrin
  • Graphene quantum dots
  • Nanomaterial
  • Paper-based analytical device

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Instrumentation
  • Condensed Matter Physics
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Electrical and Electronic Engineering
  • Materials Chemistry

Fingerprint

Dive into the research topics of 'A novel and selective multi-emission chemiluminescence system for the quantification of deltamethrin in food samples'. Together they form a unique fingerprint.

Cite this