TY - JOUR
T1 - Raman spectroelectrochemical determination of clopyralid in tap water
AU - Perez-Estebanez, Martin
AU - Cheuquepan, William
AU - Huidobro, Maria
AU - Cuevas, Jose Vicente
AU - Hernandez, Sheila
AU - Heras, Aranzazu
AU - Colina, Alvaro
N1 - Publisher Copyright:
© 2022 The Author(s)
PY - 2022/12
Y1 - 2022/12
N2 - 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.
AB - 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.
KW - EC-SOERS
KW - Herbicides
KW - Raman
KW - SERS
KW - Spectroelectrochemistry
UR - http://www.scopus.com/inward/record.url?scp=85139231265&partnerID=8YFLogxK
U2 - 10.1016/j.microc.2022.108018
DO - 10.1016/j.microc.2022.108018
M3 - Article
AN - SCOPUS:85139231265
SN - 0026-265X
VL - 183
JO - Microchemical Journal
JF - Microchemical Journal
M1 - 108018
ER -