2026-07-30T23:40:52Zhttps://riubu.ubu.es/oai/request

oai:riubu.ubu.es:10259/74342023-03-28T11:38:40Zcom_10259_3844com_10259_5086com_10259_2604com_10259_4363com_10259_3843com_10259_3591com_10259.4_106col_10259_3845col_10259_4364col_10259_6162

00925njm 22002777a 4500 dc Pérez Estébanez, Martín author Cheuquepan Valenzuela, William author Huidobro Lago, María author Cuevas Vicario, José Vicente author Hernández Muñoz, Sheila author Heras Vidaurre, Aránzazu author Colina Santamaría, Álvaro author 2022-12 Clopyralid is a common herbicide used all around the world that can be dissolved in the rain stream and accumulate in underground water with the potential threat of reaching drinking water. Many methodologies have been proposed to perform quantitative analysis of this compound but, to this day, no Raman detection of clopyralid has been carried out. Here, a novel methodology to quantify clopyralid, based on Electrochemical Surface Oxidation-Enhanced Raman Scattering (EC-SOERS), is developed, using disposable silver screen-printed electrodes as substrate. The optimization of the electrolytic media is carried out, searching for the conditions where a maximum Raman enhancement is obtained. Moreover, a study about the effect of various interfering compounds, which could be present in water, on the clopyralid Raman response is performed. The results demonstrate that the presented methodology allows the determination of clopyralid in the micromolar range in tap water without any purification or preconcentration step, requiring few minutes to perform the measurement of each sample. 0026-265X http://hdl.handle.net/10259/7434 10.1016/j.microc.2022.108018 Spectroelectrochemistry EC-SOERS SERS Raman Herbicides Raman spectroelectrochemical determination of clopyralid in tap water