Abstract
In this investigation, the persistence of carbamate pesticides in soil samples was investigated. A simple and selective differential pulse adsorptive stripping voltammetry was selected for this investigation. Carbon nanotubes paste electrodes were used as working electrodes for differential pulse adsorptive stripping voltammetry and cyclic voltammetry. A symmetric study of the various operational parameters that affect the stripping response was carried out by differential pulse voltammetry. Peak currents were linear over the concentration range of 10 -5 to 10 -10 M with an accumulation potential of -0.6 V and a 70 s accumulation time with lower detection limits of 1.09x10 -7 M, 1.07×10 -7 M, 1.09×10 -7 M for chlorphropham, thiodicarb, aldicarb. The relative standard deviation (n=10) and correlation coefficient values were 1.15 %, 0.988; 1.13 %, 0.978; and 1.14 %, 0.987, respectively. Universal buffer with pH range 2.0 - 6.0 was used as supporting electrolyte. The solutions with uniform concentration (10 -5 M) were used in all deter
Highlights
Pesticides are extensively and indiscriminately used in modern agricultural practices, resulting in widespread distribution in the environment and posing serious health hazards to animals and human beings
Based on the results obtained with differential pulse adsorptive stripping voltammetry and cyclic voltammetry at CNTPE, differential pulse adsorptive stripping voltammetry and cyclic voltammetry have been used for the quantitative determination of samples using both calibration and standard addition methods
Peak currents are linear over the concentration range of 10-5 to 10-10 M with lower detection limits of 1.09×10-7 M for chlorpropham, 1.07×10-7 M for thiodicarb, and 1.09×10-7 M for aldicarb
Summary
Pesticides are extensively and indiscriminately used in modern agricultural practices, resulting in widespread distribution in the environment and posing serious health hazards to animals and human beings. CV STUDY OF CARBAMATE PESTICIDE IN SOIL (methyl imino) carbonyloxy bisethanimido thioate) is a new carbamate compound with a broad spectrum of activity that is being extensively used for crop protection. It is a class II category compound (moderately toxic) as set forth by the United States Environmental Protection Agency (USEPA) and World Health Organization (WHO). Parilla s et al [9] reported SPE and HPLC/DAD methods to determine pesticide residues in water. Richard [10] employed HPLC method to determine carbamate residues using post-column hydrolysis s electrochemical detection. Le Aldicarb is a carbamate insecticide which is the active substance in the pesticide Temik It is effective against thrips, aphids, spider mites, lygus, fleahoppers, and leafminers, but is primarily ic used as a nematicide. The Elico Li-129 model glass calomel combined electrode was employed for measuring pH values
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Journal of Electrochemical Science and Engineering
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
