Journal
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
Volume 63, Issue 27, Pages 6150-6156Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.jafc.5b02057
Keywords
chlorpyrifos; biocompatible modified electrode; electroanalytical sensor; detection limits; real sample analysis
Funding
- Department of Science and Technology, New Delhi, India
- Council of Scientific and Industrial Research (CSIR), New Delhi, India
Ask authors/readers for more resources
A rapid and simple method of determination of chlorpyrifos is important in environmental monitoring and quality control. Electrochemical methods, for the determination of pesticides are fast, sensitive, reproducible, and cost-effective.-The key factor in electrochemical methods is the choice of suitable electrode materials. The electrode,materials should have good stability, reproducibility, more sensitivity, and easy method of preparation. Mercury based electrodes have been widely used for the determination of chlorpyrifos. From an environmental point of-view mercury cannot be used In this study a biocompatible nano-TiO2/cellulose acetate modified glassy carbon electrode was prepared by a simple method,and used for the electrochemical sensing of chlorpyrifos in aqueous methanolic solution Electroanalytical techniques such as cyclic voltammetry, differential pulse voltammetry, and amperometry were used in this work. This electrode showed very good Stability, reproducibility; and sensitivity. A well-defined peak was obtained for the reduction of chlorpyrifos in,Cyclic voltammetry and differential pulse voltammetry. A smooth noise free current response was obtained in -amperometrie analysis. The peak current obtained was proportional to the concentration of chlorpyrifos and was used to determine the unknown concentration of chlorpyrifos in the Samples. Analytical parameters such as LOD, LOQ, and linear range were estimated. Analysis of real samples was also carried-out. The results were validated through HPLC. This composite electrode can be used as an alternative to mercury electrodes reported in the literature.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available