Attenuation photochemical potential of Pontal of Paranapanema river waters (Brazil) from agrochemicals: geographical and temporal assessment

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Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.contributorVale Do Paraíba Environmental Agency-
Autor(es): dc.contributorUniversidade de São Paulo (USP)-
Autor(es): dc.creatorde Souza Freitas, Gabriela-
Autor(es): dc.creatorRodrigues, Natália Garcez-
Autor(es): dc.creatorLastre-Acosta, Arlen Mabel-
Autor(es): dc.creatorFeirreira-Pinto, Leandro-
Autor(es): dc.creatorTeixeira, Antonio Carlos Silva Costa-
Autor(es): dc.creatorParizi, Marcela Prado Silva-
Data de aceite: dc.date.accessioned2025-08-21T21:39:11Z-
Data de disponibilização: dc.date.available2025-08-21T21:39:11Z-
Data de envio: dc.date.issued2025-04-29-
Data de envio: dc.date.issued2023-12-31-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1007/s11356-024-33358-y-
Fonte completa do material: dc.identifierhttps://hdl.handle.net/11449/305391-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/305391-
Descrição: dc.descriptionKnowledge of the environmental photochemical fate of pesticides is essential to assess their potential impacts. However, there are few studies in the literature focused on the photochemical attenuation of micropollutants in Brazilian rivers. In this context, this study characterized the surface waters of the Pontal of Paranapanema region (region which concentrates more than 80% of Brazilian sugarcane cultivations), in order to determine its photochemical attenuation potential against micropollutants in different seasons. Thus, the steady-state concentrations of the photochemically produced reactive intermediates (PPRIs) (hydroxyl radical, HO•; singlet oxygen, 1O2, and triplet-excited state chromophoric dissolved organic matter, 3CDOM*), formed in the rivers, were simulated by using the APEX model (Aquatic Photochemistry of Environmentally-occurring Xenobiotics), considering the sunlight irradiance, water chemistry, and depth. Based on our simulations, these concentrations vary between 0.35 × 10−15 and 4.52 × 10−14 mol L−1 for HO•, 1.3 × 10−15 and 1.2 × 10−−14 mol L−1 for 3CDOM*, and 2.5 × 10−15 and 2.5 × 10−14 mol L−1 for 1O2. Finally, mathematical simulations were used for predicting persistence of pesticides atrazine (ATZ) and diuron (DIR) in Pontal of Paranapanema surface waters and the half-life times (t1/2) of the pollutants ranged from a few hours to one week.-
Descrição: dc.descriptionSão Paulo State University (UNESP), SP-
Descrição: dc.descriptionVale Do Paraíba Environmental Agency, SP-
Descrição: dc.descriptionResearch Group in Advanced Oxidation Processes (AdOx) Chemical Systems Engineering Center Department of Chemical Engineering University of São Paulo, SP-
Descrição: dc.descriptionSão Paulo State University (UNESP), SP-
Idioma: dc.languageen-
Relação: dc.relationEnvironmental Science and Pollution Research-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectAgrochemicals-
Palavras-chave: dc.subjectAttenuation photochemical potential-
Palavras-chave: dc.subjectEmerging contaminants-
Palavras-chave: dc.subjectEnvironmental photochemical fate-
Palavras-chave: dc.subjectMathematical simulations-
Palavras-chave: dc.subjectPesticides-
Palavras-chave: dc.subjectPhotochemically produced reactive intermediates (PPRIs)-
Palavras-chave: dc.subjectPontal of Paranapanema region-
Título: dc.titleAttenuation photochemical potential of Pontal of Paranapanema river waters (Brazil) from agrochemicals: geographical and temporal assessment-
Tipo de arquivo: dc.typelivro digital-
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