{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,10]],"date-time":"2026-01-10T01:00:26Z","timestamp":1768006826429,"version":"3.49.0"},"reference-count":39,"publisher":"MDPI AG","issue":"4","license":[{"start":{"date-parts":[[2020,10,17]],"date-time":"2020-10-17T00:00:00Z","timestamp":1602892800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001807","name":"Funda\u00e7\u00e3o de Amparo \u00e0 Pesquisa do Estado de S\u00e3o Paulo","doi-asserted-by":"publisher","award":["2018\/22214-6  and 2016\/01919-6"],"award-info":[{"award-number":["2018\/22214-6  and 2016\/01919-6"]}],"id":[{"id":"10.13039\/501100001807","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100003593","name":"Conselho Nacional de Desenvolvimento Cient\u00edfico e Tecnol\u00f3gico","doi-asserted-by":"publisher","award":["153855\/2018-5 and 423952\/2018-8"],"award-info":[{"award-number":["153855\/2018-5 and 423952\/2018-8"]}],"id":[{"id":"10.13039\/501100003593","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100002322","name":"Coordena\u00e7\u00e3o de Aperfei\u00e7oamento de Pessoal de N\u00edvel Superior","doi-asserted-by":"publisher","award":["88887.375050\/2019-00 and 88887.375049\/2019-00"],"award-info":[{"award-number":["88887.375050\/2019-00 and 88887.375049\/2019-00"]}],"id":[{"id":"10.13039\/501100002322","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Chemosensors"],"abstract":"<jats:p>The detection of pollutant traces in the public water supply and aquifers is essential for the safety of the population. In this article, we demonstrate that a simple electrochemical procedure in acidic solution can be employed for enhancing the sensitivity of flexible screen-printed carbon electrodes (SPEs) to detect bisphenol-A (BPA), hydroquinone, and catechol, simultaneously. The SPEs were pretreated electrochemically in a H2SO4 solution, which did not affect their morphology, yielding high current signals with well separated oxidation peaks. The sensitivity values were 0.28, 0.230, and 0.056 \u00b5A L \u00b5mol\u22121 with detection limits of 0.12, 0.82, and 0.95 \u00b5mol L\u22121 for hydroquinone, catechol, and BPA, respectively. The sensors were reproducible and selective for detecting BPA in plastic cups, and with adequate specificity not to be affected by interferents from water samples. The simple, inexpensive, and flexible SPE may thus be used to detect emerging pollutants and monitor the water quality.<\/jats:p>","DOI":"10.3390\/chemosensors8040103","type":"journal-article","created":{"date-parts":[[2020,10,17]],"date-time":"2020-10-17T07:23:22Z","timestamp":1602919402000},"page":"103","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":49,"title":["Flexible Carbon Electrodes for Electrochemical Detection of Bisphenol-A, Hydroquinone and Catechol in Water Samples"],"prefix":"10.3390","volume":"8","author":[{"given":"Acelino C. de","family":"S\u00e1","sequence":"first","affiliation":[{"name":"S\u00e3o Carlos Institute of Physics, University of S\u00e3o Paulo-USP, S\u00e3o Carlos, 13566-590 S\u00e3o Paulo CEP, Brazil"},{"name":"CEFITEC, Physics Department, Faculty of Science and Technology, Universidade Nova de Lisboa, Campus de Caparica, 2829-516 Caparica, Portugal"}]},{"given":"Simone C.","family":"Barbosa","sequence":"additional","affiliation":[{"name":"S\u00e3o Carlos Institute of Physics, University of S\u00e3o Paulo-USP, S\u00e3o Carlos, 13566-590 S\u00e3o Paulo CEP, Brazil"},{"name":"CEFITEC, Physics Department, Faculty of Science and Technology, Universidade Nova de Lisboa, Campus de Caparica, 2829-516 Caparica, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0379-1592","authenticated-orcid":false,"given":"Paulo A.","family":"Raymundo-Pereira","sequence":"additional","affiliation":[{"name":"S\u00e3o Carlos Institute of Physics, University of S\u00e3o Paulo-USP, S\u00e3o Carlos, 13566-590 S\u00e3o Paulo CEP, Brazil"}]},{"given":"Deivy","family":"Wilson","sequence":"additional","affiliation":[{"name":"S\u00e3o Carlos Institute of Physics, University of S\u00e3o Paulo-USP, S\u00e3o Carlos, 13566-590 S\u00e3o Paulo CEP, Brazil"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4833-9893","authenticated-orcid":false,"given":"Fl\u00e1vio M.","family":"Shimizu","sequence":"additional","affiliation":[{"name":"Department of Applied Physics, \u201cGleb Wataghin\u201d Institute of Physics (IFGW), University of Campinas (UNICAMP), 13083-859 Campinas, S\u00e3o Paulo, Brazil"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4710-0693","authenticated-orcid":false,"given":"Maria","family":"Raposo","sequence":"additional","affiliation":[{"name":"CEFITEC, Physics Department, Faculty of Science and Technology, Universidade Nova de Lisboa, Campus de Caparica, 2829-516 Caparica, Portugal"}]},{"suffix":"Jr.","given":"Osvaldo N.","family":"Oliveira","sequence":"additional","affiliation":[{"name":"S\u00e3o Carlos Institute of Physics, University of S\u00e3o Paulo-USP, S\u00e3o Carlos, 13566-590 S\u00e3o Paulo CEP, Brazil"}]}],"member":"1968","published-online":{"date-parts":[[2020,10,17]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"10167","DOI":"10.3390\/s130810167","article-title":"Nano-molar deltamethrin sensor based on electrical impedance of PAH\/PAZO layer-by-layer sensing films","volume":"13","author":"Abegao","year":"2013","journal-title":"Sensors"},{"key":"ref_2","doi-asserted-by":"crossref","unstructured":"Magro, C., Mateus, E.P., Paz-Garcia, J.M., Serio, S., Raposo, M., and Ribeiro, A.B. 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