RT Journal Article
T1 Inexpensive FIA method to determine trace levels of imazapyr by UV-detection enhanced with electrochemical polarization
A1 León Gómez, Lara
A1 Mozo Mulero, Cristina
A1 Martín Infante, F. J.
A1 Maraver Puig, Joaquín
A1 Carbajo Timoteo, José Coronada
A1 Mozo Llamazares, Juan Daniel
AB A new flow injection analysis method with spectro-electrochemical detection (FIA/SEC)to determine trace levels of imazapyr on water samples is presented. The non-chromatographicmethod involves the use of a bench photometer, a single-potential potentiostat, a low pressurepumping system and a home-made spectro-electrochemical flow detector (SEC-FD), specificallyadapted for the described method and using a stainless steel/electrolytic lead/lead chloride(SS/e-Pb/PbCl2) working electrode. The limit of quantification (LOQ) reached for the optimizedwork parameters was 0.02 mg/mL, the relative standard deviation (RSD) in the whole range oflinear response was less than 2% and a wide linear response range from 0.005 to 6.0 mg/mL wasobtained. A standard addition method was used to determine the imazapyr amount in naturalwaters containing commercial formulation of such herbicide, the Recovery % has values close to105%. The method performance makes it suitable to analyze the legal imazapyr tolerancesestablished by the U.S. EPA avoiding the use of expensive chromatographic equipments and/orcomplicated sample preparations.
PB Elsevier
SN 1878-5352
YR 2019
FD 2019
LK http://hdl.handle.net/10272/17022
UL http://hdl.handle.net/10272/17022
LA eng
NO León, L., Mozo-Mulero, C., Martín-Infante, F. J., Maraver, J. J., Carbajo, J., & Mozo, J. D. (2019). Inexpensive FIA method to determine trace levels of imazapyr by UV-detection enhanced with electrochemical polarization. Arabian Journal of Chemistry, 12(7), 1042–1049. https://doi.org/10.1016/j.arabjc.2018.09.009
NO This work was supported by the Research Plan of the University of Huelva.
DS Repositorio Institucional de la Universidad de Huelva
RD 30 may 2026