Printed strips coated with a reticular organic framework for non-enzymatic detection of pesticides in the urine of rural workers.
MARTINS, Thiago Serafim; HENRIQUE, Fábio Junior Ferreira da Silva; BIROLLI, Willian Garcia; BOTT NETO, José Luiz; SILVEIRA, Henrique César Santejo; ESTEVES, Pierre Mothé; OLIVEIRA JUNIOR, Osvaldo Novais de.
MARTINS, Thiago Serafim; HENRIQUE, Fábio Junior Ferreira da Silva; BIROLLI, Willian Garcia; BOTT NETO, José Luiz; SILVEIRA, Henrique César Santejo; ESTEVES, Pierre Mothé; OLIVEIRA JUNIOR, Osvaldo Novais de.
Abstract: Monitoring the exposure of rural workers to pesticides during spraying is essential to safeguard their health, and this should ideally be done on the farms. In this work, we developed sensor strips coated with a reticular covalent organic framework (COF) which can detect paraquat and carbendazim simultaneously in artificial and human urine. Using electrochemical methods, a selective detection can be made of paraquat and carbendazim across concentrations ranging from 0.05 to 10 µM, with detection limits of 0.01 and 0.05 µM, respectively. This performance and selectivity may be attributed to a combination of high surface area, chemical composition and pore size of the COF used. Tests with undiluted urine samples were positive for at least one pesticide for all the nine rural workers taking part in the study. This highlights the need for monitoring pesticide levels, that can be done with the sensors presented here as they may be used with portable instruments with no sample pre-treatment.
@article={003206983,author = {MARTINS, Thiago Serafim; HENRIQUE, Fábio Junior Ferreira da Silva; BIROLLI, Willian Garcia; BOTT NETO, José Luiz; SILVEIRA, Henrique César Santejo; ESTEVES, Pierre Mothé; OLIVEIRA JUNIOR, Osvaldo Novais de.},title={Printed strips coated with a reticular organic framework for non-enzymatic detection of pesticides in the urine of rural workers},journal={Chemical Engineering Journal},note={v. 496, p. 154027-1-154027-9 + supplementary data},year={2024}}