Rapid screening of agrochemicals by paper spray ionization and leaf spray mass spectrometry: which technique is more appropriate

Página do item simplificado
dc.creatorSilva, Igor Pereira da
dc.creatorRodrigues, Stéfany Rezende Miranda
dc.creatorCarvalho, Thays Colletes de
dc.creatorCarvalho, Verônica Vale
dc.creatorSanz Lobón, Germán
dc.creatorBassane, João Felipe Pereira
dc.creatorDomingos, Eloilson
dc.creatorRomão, Wanderson
dc.creatorAugusti, Rodinei
dc.creatorVaz, Boniek Gontijo
dc.date.accessioned2023-08-07T10:58:58Z
dc.date.available2023-08-07T10:58:58Z
dc.date.issued2016
dc.description.abstractPaper Spray Ionization (PSI) and Leaf Spray (LS) are two new sources of ambient ionization mass spectrometry. In PSI, the sample is deposited on a triangular paper and ions are generated by applying a high voltage on a moistened paper with an organic protic solvent. The LS technique is a variant of PSI, where the paper is now substituted by the matrix itself to be studied, a triangular leaf. Both methods allow rapid and inexpensive analyses compared to traditional API techniques. In this work, both sources were applied to identify and quantify agrochemicals which are widely used in fruits and vegetables. The analytical performance of PS and LS techniques was evaluated from the construction of calibration curves in the positive ionization mode (PSI(+) and LS(+)) using atrazine, diuron and methomyl agrochemicals in arugula, basil, cabbage, lettuce and kale vegetable samples. The concentration ranged from 10 to 1000 ppb. Atrazine and diuron were used as internal standards, not requiring the use of deuterated standards. Both analytical methods demonstrated similar performance for the three agrochemicals with R2 > 0.99, and values of LOD and LOQ ranging from 1.23 to 25.00 and 4.12 to 83.33 ppb for PSI(+)-MS and from 0.03 to 36.00 and 0.11–120.00 ppb for LS(+)-MS. In almost all cases, these values were lower than the established MRLs (Maximum Residue Limits), which are 250 ppb for atrazine and 100 ppb for diuron and methomyl.pt_BR
dc.identifier.citationPEREIRA, Igor et al. Rapid screening of agrochemicals by paper spray ionization and leaf spray mass spectrometry: which technique is more appropriate? Analytical Methods, London, v. 8, n. 31, p. 6023-6029, 2016. DOI: 10.1039/C6AY01154C. Disponível em: https://pubs.rsc.org/en/content/articlelanding/2016/AY/C6AY01154C. Acesso em: 28 jun. 2023.pt_BR
dc.identifier.doi10.1039/C6AY01154C
dc.identifier.issne- 1759-9679
dc.identifier.urihttps://pubs.rsc.org/en/content/articlelanding/2016/AY/C6AY01154C
dc.language.isoengpt_BR
dc.publisher.countryGra-bretanhapt_BR
dc.publisher.departmentInstituto de Química - IQ (RMG)pt_BR
dc.rightsAcesso Restritopt_BR
dc.titleRapid screening of agrochemicals by paper spray ionization and leaf spray mass spectrometry: which technique is more appropriatept_BR
dc.typeArtigopt_BR

Arquivos

Licença do Pacote
Agora exibindo 1 - 1 de 1
Nenhuma Miniatura disponível
Nome:
license.txt
Tamanho:
1.71 KB
Formato:
Item-specific license agreed upon to submission
Descrição:
Baixar

Coleções

IQ - Artigos publicados em periódicos