Electrochemical determination of bentazone using simple screen-printed carbon electrodes

Alemnew Geto, Jafar Safaa Noori*, John Mortensen, Winnie E. Svendsen, Maria Dimaki

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

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Abstract

Bentazone is one of the most problematic pesticides polluting groundwater resources. It is on the list of pesticides that are mandatory to analyze at water work controls. The current pesticide measuring approach includes manual water sampling and time-consuming chromatographical quantification of the bentazone content at centralized laboratories. Here, we report the use of an electrochemical approach for analytical determination of bentazone that takes 10 s. The electrochemical electrodes were manually screen printed, resulting in the low-cost fabrication of the sensors. The current response was linearly proportional to the bentazone concentration with a R2 ~ 0.999. We demonstrated a sensitivity of 0.0987 μA/μM and a limit of detection of 0.034 μM, which is below the U.S. Health Advisory level. Furthermore, the sensors have proved to be reusable and stable with a drop of only 2% after 15 times reuse. The sensors have been applied to successfully quantify bentazone spiked in real groundwater and lake water. The sensing method presented here is a step towards on-site application of electrochemical detection of pesticides in water sources.

Original languageEnglish
JournalEnvironment International
Volume129
Pages (from-to)400-407
Number of pages8
ISSN0160-4120
DOIs
Publication statusPublished - 2019

Bibliographical note

© 2019 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY license (http://creativecommons.org/licenses/BY/4.0/).T

Keywords

  • Bentazone
  • Contamination
  • Electrochemistry
  • Groundwater
  • Pesticide
  • Sensor

Cite this

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title = "Electrochemical determination of bentazone using simple screen-printed carbon electrodes",
abstract = "Bentazone is one of the most problematic pesticides polluting groundwater resources. It is on the list of pesticides that are mandatory to analyze at water work controls. The current pesticide measuring approach includes manual water sampling and time-consuming chromatographical quantification of the bentazone content at centralized laboratories. Here, we report the use of an electrochemical approach for analytical determination of bentazone that takes 10 s. The electrochemical electrodes were manually screen printed, resulting in the low-cost fabrication of the sensors. The current response was linearly proportional to the bentazone concentration with a R2 ~ 0.999. We demonstrated a sensitivity of 0.0987 μA/μM and a limit of detection of 0.034 μM, which is below the U.S. Health Advisory level. Furthermore, the sensors have proved to be reusable and stable with a drop of only 2{\%} after 15 times reuse. The sensors have been applied to successfully quantify bentazone spiked in real groundwater and lake water. The sensing method presented here is a step towards on-site application of electrochemical detection of pesticides in water sources.",
keywords = "Bentazone, Contamination, Electrochemistry, Groundwater, Pesticide, Sensor",
author = "Alemnew Geto and Noori, {Jafar Safaa} and John Mortensen and Svendsen, {Winnie E.} and Maria Dimaki",
note = "{\circledC} 2019 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY license (http://creativecommons.org/licenses/BY/4.0/).T",
year = "2019",
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language = "English",
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Electrochemical determination of bentazone using simple screen-printed carbon electrodes. / Geto, Alemnew; Noori, Jafar Safaa; Mortensen, John; Svendsen, Winnie E.; Dimaki, Maria.

In: Environment International, Vol. 129, 2019, p. 400-407.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - Electrochemical determination of bentazone using simple screen-printed carbon electrodes

AU - Geto, Alemnew

AU - Noori, Jafar Safaa

AU - Mortensen, John

AU - Svendsen, Winnie E.

AU - Dimaki, Maria

N1 - © 2019 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY license (http://creativecommons.org/licenses/BY/4.0/).T

PY - 2019

Y1 - 2019

N2 - Bentazone is one of the most problematic pesticides polluting groundwater resources. It is on the list of pesticides that are mandatory to analyze at water work controls. The current pesticide measuring approach includes manual water sampling and time-consuming chromatographical quantification of the bentazone content at centralized laboratories. Here, we report the use of an electrochemical approach for analytical determination of bentazone that takes 10 s. The electrochemical electrodes were manually screen printed, resulting in the low-cost fabrication of the sensors. The current response was linearly proportional to the bentazone concentration with a R2 ~ 0.999. We demonstrated a sensitivity of 0.0987 μA/μM and a limit of detection of 0.034 μM, which is below the U.S. Health Advisory level. Furthermore, the sensors have proved to be reusable and stable with a drop of only 2% after 15 times reuse. The sensors have been applied to successfully quantify bentazone spiked in real groundwater and lake water. The sensing method presented here is a step towards on-site application of electrochemical detection of pesticides in water sources.

AB - Bentazone is one of the most problematic pesticides polluting groundwater resources. It is on the list of pesticides that are mandatory to analyze at water work controls. The current pesticide measuring approach includes manual water sampling and time-consuming chromatographical quantification of the bentazone content at centralized laboratories. Here, we report the use of an electrochemical approach for analytical determination of bentazone that takes 10 s. The electrochemical electrodes were manually screen printed, resulting in the low-cost fabrication of the sensors. The current response was linearly proportional to the bentazone concentration with a R2 ~ 0.999. We demonstrated a sensitivity of 0.0987 μA/μM and a limit of detection of 0.034 μM, which is below the U.S. Health Advisory level. Furthermore, the sensors have proved to be reusable and stable with a drop of only 2% after 15 times reuse. The sensors have been applied to successfully quantify bentazone spiked in real groundwater and lake water. The sensing method presented here is a step towards on-site application of electrochemical detection of pesticides in water sources.

KW - Bentazone

KW - Contamination

KW - Electrochemistry

KW - Groundwater

KW - Pesticide

KW - Sensor

U2 - 10.1016/j.envint.2019.05.009

DO - 10.1016/j.envint.2019.05.009

M3 - Journal article

VL - 129

SP - 400

EP - 407

JO - Environment International

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SN - 0160-4120

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