A new voltammetric approach for the determination of the growth retardant paclobutrazol in the presence of difenoconazole in pesticide preparations
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F23%3A39920581" target="_blank" >RIV/00216275:25310/23:39920581 - isvavai.cz</a>
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S1572665723002205?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S1572665723002205?via%3Dihub</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.jelechem.2023.117360" target="_blank" >10.1016/j.jelechem.2023.117360</a>
Alternative languages
Result language
angličtina
Original language name
A new voltammetric approach for the determination of the growth retardant paclobutrazol in the presence of difenoconazole in pesticide preparations
Original language description
Paclobutrazol (PBZ) belongs to the group of triazole pesticides, which act as inhibitors of the synthesis of phy-tohormones and thereby regulate plant growth. In this study, the electrochemical oxidation of this pesticide was investigated for the first time. PBZ provides on a boron-doped diamond electrode (BDDE) one irreversible anodic peak over a wide pH range of the supporting electrolyte at a significantly positive potential of ca. +1950 mV (vs Ag/AgCl), which is suitable for electroanalytical purposes. Based on the LC-MS analysis of the products of electrolysis, the mechanism of the electrochemical oxidation of PBZ was also proposed. The method developed for the determination of PBZ using differential pulse voltammetry in connection with BDDE in the supporting electrolyte of 0.07 mol L-1 NaOH with 33 % of acetonitrile provided a very low limit of quantification amounted to 2.6 x 10-7 mol L-1. Under optimized conditions, the determination of the stud-ied plant growth regulator is also possible in the presence of the other insecticide difenoconazole, which is usu-ally found in commercial preparations mixed with PBZ. For natural water samples with very low concentrations of pesticides, a method of analyte pre-concentration using strong acid Amberlite (R) IRC120 H catex was developed. The proposed procedures were successfully applied for the analysis of model solutions, commercially available pesticide preparations, and spiked natural waters.
Czech name
—
Czech description
—
Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10406 - Analytical chemistry
Result continuities
Project
<a href="/en/project/GA20-01589S" target="_blank" >GA20-01589S: New strategies for improving sensing properties of novel electrode materials via their surface pretreatment or modification</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Journal of Electroanalytical Chemistry
ISSN
1572-6657
e-ISSN
1873-2569
Volume of the periodical
935
Issue of the periodical within the volume
March
Country of publishing house
CH - SWITZERLAND
Number of pages
10
Pages from-to
117360
UT code for WoS article
000966033100001
EID of the result in the Scopus database
2-s2.0-85151445055