English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Harmful chemicals predominantly used in modern agriculture for pest control have raised a long-term accumulation in the environment and serious problems concerning food safety and health. Excellent detection tools for environmental monitoring are thus urgently needed. The recent biosensor technology is proposed to fulfill this purpose. In this study, an expedient biosensor for captan fungicide determination has been fabricated using its specific reacting enzyme glutathione-s-transferase (GST) covalently immobilized on natural biopolymer chitosan (Chi). The screen-printed carbon electrode (SPCE) has been selected as a basal platform for the biosensor development. Modification of SPCE was made by self-assembled deposition of 1% chitosan in 1% acetic acid solution onto the basal SPCE. Progressive characteristics of the assembled SPCE-Chi-GST have been clearly approved by atomic force microscopy, impedance spectroscopy and cyclic voltammetry (CV). Two sequential oxidation peak currents arose in the electrochemical behavior analysis of captan in the presence of GST substrate electrolyte solution by CV and linear sweep voltammetry (LSV). Dose-response to various captan concentrations was investigated in the range 0 – 20 μg/ml by LSV and a similar good linear relationship between peak current and concentration of captan could be obtained by both oxidation steps with the limit of detection (LOD) at 0.2 μg/ml. Thus the sensitive, rapid, inexpensive and miniature quantitative system for captan monitoring could now be successfully achieved by this proposed biosensor.

DEVELOPMENT OF SPECIFIC ELECTROCHEMICAL BIOSENSOR BASED ON CHITOSAN MODIFIED SCREEN PRINTED CARBON ELECTRODE FOR THE MONITORING OF CAPTAN FUNGICIDE