2024 : 4 : 17
Farzad Bamdad

Farzad Bamdad

Academic rank: Associate Professor
ORCID: https://orcid.org/0000-0002-3900-0783
Education: PhD.
ScopusId: 23487653700
Faculty: Science
Address: Arak University
Phone:

Research

Title
Simultaneous determination of cysteine and homocysteine by using their effects on the absorption spectrum of silver nanoparticles
Type
Presentation
Keywords
Cysteine, Homocysteine, Polyvinyl pyrrolidone, Silver nanoparticles
Year
2016
Researchers Farzad Bamdad ، Maryam Samet

Abstract

In this work a sensitive colorimetric method based on the shift in the position of plasmon peak of pvp-stabilized-AgNPs. was used to measure Cysteine and homocysteine in blood plasma. The reaction involves electrostatic interactions between the thiol molecules attached to the surface of the silver nanoparticles. The co-action between particles leads to a decrease in the plasmonic peak at 398 nm and rise of a new peak at 520 nm, resulting a color change from yellow to pink. Effective parameters including nanoparticle concentration, ionic strength, pH of solution and time were studied.