Large-volume electric field-assisted multiphase extraction of malachite green from water samples: a multisample device and method validation

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dc.creatorJaime Dos Santos Viana
dc.creatorMarina Caneschi de Freitas
dc.creatorBruno Gonçalves Botelho
dc.creatorRicardo Mathias Orlando
dc.date.accessioned2025-01-23T18:56:41Z
dc.date.accessioned2025-09-08T22:54:04Z
dc.date.available2025-01-23T18:56:41Z
dc.date.issued2021-01
dc.identifier.doi10.1016/j.talanta.2020.121540
dc.identifier.issn00399140
dc.identifier.urihttps://hdl.handle.net/1843/79433
dc.languageeng
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofTalanta
dc.rightsAcesso Restrito
dc.subjectÁgua
dc.subjectExtração multifásica
dc.subject.otherEletroextração
dc.subject.otherMonitoramento ambiental
dc.subject.otherVerde malaquita
dc.subject.otherPreparação da amostra
dc.titleLarge-volume electric field-assisted multiphase extraction of malachite green from water samples: a multisample device and method validation
dc.typeArtigo de periódico
local.citation.epage8
local.citation.spage1
local.citation.volume222
local.description.resumoIn this work, a new large-volume multiphase, multi-sample electroextraction device was developed and applied to selectively extract malachite green (MG) from water samples. This device was easily constructed with ordinary materials and capable of extracting ten samples simultaneously, obtaining MG preconcentrated on a solid support, to fit into a pipette tip. A multi-well plate was applied to extract MG from aquaculture water samples, and the extracts containing the desorbed MG were analysed by LC-DAD and LC-MS/MS. The signals from both detectors were used in two independent validation procedures. Linearity, matrix effect, selectivity, precision, trueness, and limits of detection and quantification were all evaluated. For both detectors, linearity was demonstrated in the range of 0.5–5 μg L−1 (R2 > 0.98). Matrix effect was insignificant for LC-DAD only, and the average preconcentration factor was about 60 times. Recoveries ranged from 94 to 113% for LC-DAD and 95–115% for LC-MS/MS analysis. ANOVA was applied to estimate the standard deviation under repeatability (6.96–8.61% for LC-DAD and 5.98–7.41% for LC-MS/MS) and within-reproducibility (6.96–8.61% for LC-DAD and 6.56–7.41% for LC-MS/MS) conditions. The limits of detection and quantification for LC-MS/MS analysis were 4.29 and 28.74 ng L−1, respectively, while, for LC-DAD, these limits were 14.29 and 95.81 ng L−1, respectively. The results demonstrated that the developed method was suitable for determining MG in water samples, and the large-volume multiphase, multi-sample electroextraction device proved to be a powerful sample preparation technique to obtain high clean-up and large preconcentration levels, which are of paramount importance for environmental applications.
local.publisher.countryBrasil
local.publisher.departmentFAR - DEPARTAMENTO DE ALIMENTOS
local.publisher.departmentICX - DEPARTAMENTO DE QUÍMICA
local.publisher.initialsUFMG
local.url.externahttps://www.sciencedirect.com/science/article/pii/S0039914020308316

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