Login for students

Login for employees

Publication detail

Voltammetric monitoring of herbicide picloram using silver solid amalgam electrode.
Year: 2013
Type of publication: ostatní - článek ve sborníku
Name of source: XVII Euroanalysis
Publisher name: Polish Chemical Society
Place: Varšava
Page from-to: 781
Titles:
Language Name Abstract Keywords
eng Voltammetric monitoring of herbicide picloram using silver solid amalgam electrode. Picloram (4-amino-3,5,6-trichloropyridine-2-carboxylic acid; PCR) is a systematic herbicide, which belongs to a group of pyridine herbicides. It is the most persistent member of this herbicide family and its half-life in soils can vary from one month to three years and depends on application rate, soil type, temperature or moisture. It is very good water soluble and high mobile in soils, which leads to contamination of groundwater. Therefore a simple and sensitive method for determination of this herbicide is required. Electrochemical methods have been already utilized as rapid and sensitive for determination of pesticides. Moreover voltammetric methods in combination with silver solid amalgam electrodes in various modifications, as working electrodes, have been utilized as sensitive tools in analysis of pesticides. The voltammetric behavior and determination of picloram was for the first time studied on a mercury meniscus modified silver solid amalgam electrode (m-AgSAE) using cyclic, DC and differential pulse voltammetry. The influence of supporting electrolyte and scan rate on the current response of picloram was examined to select the optimum experimental conditions. It was found that picloram provided one well-shaped cathodic (reduction) peak at potential -750 mV vs. Ag/AgCl in strong acidic medium. At optimized differential pulse voltammetric parameters, the linear dynamic range was measured from 0.5 to 9.0 umol L-1 and the low limit of detection and good repeatability were obtained. The proposed method was successfully applied in analysis of environmental samples spiked with picloram with good accuracy (residual standard deviations less than 5% for all samples, n = 5). By this way, m-AgSAE introduces sensitive voltammetric tool in analysis of picloram. Voltammetry; determination; herbicide; picloram; silver solid amalgam electrode

Departments

Other Parts

Map

en.mapy.cz

Services

Popular Links

© 2023 University of Pardubice, Studentská 95, 532 10 Pardubice 2
Phone: +420 466 036 111, 466 036 112, 466 036 113
Webmaster, RSS
Data box ID: f5vj9hu
Accessibility Statement
CC BY-NC-ND 4.0Creative CommonsAttributionNonCommercialNoDerivatives