Determination of three cresol isomers in sewage sludge by solid-liquid extraction with low temperature purification and gas chromatography-mass spectrometry

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dc.creatorMarta Batista Ramalho
dc.creatorAlisson Farley Soares Durães
dc.creatorFlaviano Oliveira Silvério
dc.creatorGevany Paulino de Pinho
dc.date.accessioned2023-01-10T11:33:31Z
dc.date.accessioned2025-09-09T01:07:28Z
dc.date.available2023-01-10T11:33:31Z
dc.date.issued2019-10-18
dc.description.sponsorshipCNPq - Conselho Nacional de Desenvolvimento Científico e Tecnológico
dc.description.sponsorshipOutra Agência
dc.identifier.doihttps://doi.org/10.1080/03601234.2019.1678952
dc.identifier.issn1532-4109
dc.identifier.urihttps://hdl.handle.net/1843/48806
dc.languageeng
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofJournal of Environmental Science and Health, Part B
dc.rightsAcesso Restrito
dc.subjectLodo de esgoto
dc.subjectCresol
dc.subjectFenóis
dc.subjectCromatografia a gás
dc.subjectEspectrometria de massa
dc.titleDetermination of three cresol isomers in sewage sludge by solid-liquid extraction with low temperature purification and gas chromatography-mass spectrometry
dc.typeArtigo de periódico
local.citation.epage192
local.citation.issue3
local.citation.spage184
local.citation.volume55
local.description.resumoCresols are chemical contaminants derivative from phenol which can be found in sewage sludge. However, little attention has been given to monitoring these compounds in environmental matrices in the literature. Thus, the objective of this study was to develop a simple method based on solid-liquid extraction with low temperature purification for determining three cresol isomers in sludge. The quantification of these compounds was performed by gas chromatography coupled to mass spectrometry with a previous derivatization step. After a detailed study, the cresol recovery was higher than 91%, with relative standard deviation lower than 12% and a limit of quantification of 20 μg kg−1. Linearity was achieved between 10 and 90 μg L−1 (R2 > 0.98) with the standard solutions prepared in matrix extracts due to the trouble caused by the matrix effect. The proposed method was applied with success for monitoring cresols in sewage sludge samples coming from six different wastewater treatment plants. All samples showed contamination by cresols, mainly p-cresol with values between 32.3 and 516.9 μg kg−1. The majority of the analyzed samples showed a total sum of the isomers higher than the maximum residue limit established by Brazilian legislation (160 μg kg−1).
local.publisher.countryBrasil
local.publisher.departmentICA - INSTITUTO DE CIÊNCIAS AGRÁRIAS
local.publisher.initialsUFMG
local.url.externahttps://www.tandfonline.com/doi/full/10.1080/03601234.2019.1678952

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