Determining tolfenpyrad in water samples using liquid-liquid extraction with low temperature purification (LLE-LTP)

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dc.creatorKarine Rocha Teófilo
dc.creatorLázaro Chaves Sicupira
dc.creatorFlaviano Oliveira Silvério
dc.date.accessioned2025-07-15T11:40:11Z
dc.date.accessioned2025-09-09T00:45:31Z
dc.date.available2025-07-15T11:40:11Z
dc.date.issued2024
dc.description.sponsorshipCNPq - Conselho Nacional de Desenvolvimento Científico e Tecnológico
dc.description.sponsorshipFAPEMIG - Fundação de Amparo à Pesquisa do Estado de Minas Gerais
dc.description.sponsorshipCAPES - Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
dc.identifier.doihttps://doi.org/10.21577/0103-5053.20240006
dc.identifier.issn1678-4790
dc.identifier.urihttps://hdl.handle.net/1843/83562
dc.languageeng
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofJournal of the brazilian chemical society
dc.rightsAcesso Aberto
dc.subjectInseticidas
dc.subjectAcaricidas
dc.subjectPirazóis
dc.subjectExtração (Química)
dc.titleDetermining tolfenpyrad in water samples using liquid-liquid extraction with low temperature purification (LLE-LTP)
dc.typeArtigo de periódico
local.citation.issue7
local.citation.spagee-20240006
local.citation.volume35
local.description.resumoTolfenpyrad is an insecticide and acaricide of the pyrazole class, which has been used to control pests in cereal, legume and vegetable crops. Despite its high efficiency, this insecticide is considered highly toxic to humans by Brazilian legislation. Therefore, this study aims to optimize and validate liquid-liquid extraction with low temperature purification followed by analysis by high-performance liquid chromatography with diode array detection to determine tolfenpyrad in water. The results showed that the optimal extraction conditions were achieved using only acetonitrile as extracting phase and 60 min as freezing time. Under these conditions, the extraction method was selective, accurate, and precise, with a recovery of 102.41% and a relative standard deviation of 11.29%. The method was linear from 2.0 to 150.0 μg L-1, with a limit of quantification of 2.0 μg L-1, and the matrix effect was –7.67%. The half-life was 23 days (with sunlight) and 30 days (no sunlight).
local.publisher.countryBrasil
local.publisher.departmentICA - INSTITUTO DE CIÊNCIAS AGRÁRIAS
local.publisher.initialsUFMG
local.url.externahttps://www.scielo.br/j/jbchs/a/gcrYnSDwCTbjJxyjMFvQ4pf/abstract/?lang=en

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