León Gómez, LaraMozo Mulero, CristinaMartín Infante, F. J.Maraver Puig, JoaquínCarbajo Timoteo, José CoronadaMozo Llamazares, Juan Daniel2019-11-252019-11-252019León, 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.2018.09.0091878-5352http://hdl.handle.net/10272/17022A new flow injection analysis method with spectro-electrochemical detection (FIA/SEC) to determine trace levels of imazapyr on water samples is presented. The non-chromatographic method involves the use of a bench photometer, a single-potential potentiostat, a low pressure pumping system and a home-made spectro-electrochemical flow detector (SEC-FD), specifically adapted 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 optimized work parameters was 0.02 mg/mL, the relative standard deviation (RSD) in the whole range of linear response was less than 2% and a wide linear response range from 0.005 to 6.0 mg/mL was obtained. A standard addition method was used to determine the imazapyr amount in natural waters containing commercial formulation of such herbicide, the Recovery % has values close to 105%. The method performance makes it suitable to analyze the legal imazapyr tolerances established by the U.S. EPA avoiding the use of expensive chromatographic equipments and/or complicated sample preparations.engAtribución-NoComercial-SinDerivadas 3.0 Españahttp://creativecommons.org/licenses/by-nc-nd/3.0/es/ImazapyrFlow injection analysisHerbicide trace analysisUV detectionLead electrodeWater micropollutants analysisjournal article10.1016/j.arabjc.2018.09.009open access