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The compounds investigated included three parabens, methylparaben (MP), ethylparaben (EP), butylparaben (BP), the UV filter and benzophenone (BZP), with detection performed by high\u2010performance liquid chromatography with a diode\u2010array detector (HPLC\u2010DAD). Experimental conditions were optimized using univariate and multivariate approaches, evaluating the effects of the extractor phase, desorption solvent and time, sample pH, extraction time, and NaCl concentration. Optimal extraction conditions involved the use of PAni doped with oxalic acid, desorption in a mixture of ACN:MeOH (50:50) for 30\u00a0min, an extraction time of 150\u00a0min, sample pH adjusted to 7, and 20% NaCl. Calibration curves were performed in ultrapure water with determination coefficients greater than 0.9973. The limits of detection (LODs) and quantification (LOQs) were 1.5 and 5\u00a0\u00b5g\u00a0L\n                    <jats:sup>\u22121<\/jats:sup>\n                    , respectively, for all analytes. Intraday precision ranged from 2% to 19%, while inter\u2010day precision varied between 10% and 22%. Method accuracy was assessed through relative recovery experiments in a water sample from a swimming pool, with recoveries ranging from 74% to 109%. The developed method was applied to six recreational water samples. In three of them, the analyte concentrations were above the LOQ, while in the others, the analytes were not found or their concentrations were below the LOD.\n                  <\/jats:p>","DOI":"10.1002\/jssc.70478","type":"journal-article","created":{"date-parts":[[2026,7,2]],"date-time":"2026-07-02T07:09:54Z","timestamp":1782976194000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["A High\u2010Throughput Analytical Approach Using Polyaniline Doped With Oxalic Acid in Thin Film Solid\u2010Phase Microextraction for the Determination of Personal Care Products in Recreational Waters"],"prefix":"10.1002","volume":"49","author":[{"given":"Amanda Vit\u00f3ria","family":"Santos","sequence":"first","affiliation":[{"name":"Departamento de Qu\u00edmica Universidade Federal de Santa Catarina  Florian\u00f3polis Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Francielle Crocetta","family":"Turazzi","sequence":"additional","affiliation":[{"name":"Departamento de Engenharia Mec\u00e2nica Universidade Federal de Santa Catarina  Florian\u00f3polis Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Eduardo","family":"Carasek","sequence":"additional","affiliation":[{"name":"Departamento de Qu\u00edmica Universidade Federal de Santa Catarina  Florian\u00f3polis Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Guilherme Mariz de Oliveira","family":"Barra","sequence":"additional","affiliation":[{"name":"Departamento de Engenharia Mec\u00e2nica Universidade Federal de Santa Catarina  Florian\u00f3polis Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2026,7,2]]},"reference":[{"key":"e_1_2_10_2_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.scitotenv.2024.174662"},{"key":"e_1_2_10_3_1","doi-asserted-by":"publisher","DOI":"10.1080\/10408347.2018.1496010"},{"key":"e_1_2_10_4_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.aca.2018.05.059"},{"key":"e_1_2_10_5_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.scitotenv.2019.136010"},{"key":"e_1_2_10_6_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.scitotenv.2016.03.203"},{"key":"e_1_2_10_7_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.acax.2019.100038"},{"key":"e_1_2_10_8_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.aca.2024.342662"},{"key":"e_1_2_10_9_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.chroma.2023.463850"},{"key":"e_1_2_10_10_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.sampre.2025.100176"},{"key":"e_1_2_10_11_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jfca.2023.105548"},{"key":"e_1_2_10_12_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.chroma.2023.464187"},{"key":"e_1_2_10_13_1","doi-asserted-by":"publisher","DOI":"10.1021\/ac026162q"},{"key":"e_1_2_10_14_1","doi-asserted-by":"publisher","DOI":"10.1021\/ac00218a019"},{"key":"e_1_2_10_15_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.ccr.2024.215680"},{"key":"e_1_2_10_16_1","doi-asserted-by":"publisher","DOI":"10.1093\/chromsci\/44.6.317"},{"key":"e_1_2_10_17_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.chroma.2006.10.039"},{"key":"e_1_2_10_18_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.chroma.2020.461670"},{"key":"e_1_2_10_19_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.aca.2017.09.047"},{"key":"e_1_2_10_20_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.talanta.2018.08.077"},{"key":"e_1_2_10_21_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.surfin.2023.103534"},{"key":"e_1_2_10_22_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.microc.2014.08.009"},{"key":"e_1_2_10_23_1","doi-asserted-by":"publisher","DOI":"10.1039\/c4ra03146f"},{"key":"e_1_2_10_24_1","doi-asserted-by":"publisher","DOI":"10.3390\/ma17205128"},{"key":"e_1_2_10_25_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.aca.2023.342183"},{"key":"e_1_2_10_26_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.matpr.2020.06.051"},{"key":"e_1_2_10_27_1","doi-asserted-by":"publisher","DOI":"10.1002\/jssc.202300280"},{"key":"e_1_2_10_28_1","doi-asserted-by":"publisher","DOI":"10.1016\/0379\u20106779(86)90070\u20106"},{"key":"e_1_2_10_29_1","first-page":"1098","article-title":"A New Approach for Histamine Functionalized Nanoparticles as Sorbent Phase for Bar Adsorptive Microextraction (BA\u00b5E) and Determination of Parabens in Water by HPLC\u2010DAD","volume":"33","author":"Lopes D.","year":"2022","journal-title":"Journal of the Brazilian Chemical Society"},{"key":"e_1_2_10_30_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.progpolymsci.2010.07.006"},{"key":"e_1_2_10_31_1","first-page":"54","article-title":"Polyaniline Doped With Protonic Acids: Optical and Morphological Studies","volume":"8","author":"Ingle R. 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