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Identification of cattle poisoning by Bifenthrin via earwax analysis by HS/GC–MS
Author(s) -
Gonçalves Barbosa João Marcos,
Machado Botelho Ana Flávia,
Santana da Silva Rayanne Henrique,
Ferreira de Almeida Sara Sueli,
Ferreira Elci Rincon,
Caetano David Lurian,
Alves Fortuna Lima Danielly,
Cavalcante e Silva Taynara,
Jorge da Cunha Paulo Henrique,
Roberto Antoniosi Filho Nelson
Publication year - 2021
Publication title -
biomedical chromatography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.4
H-Index - 65
eISSN - 1099-0801
pISSN - 0269-3879
DOI - 10.1002/bmc.5017
Subject(s) - bifenthrin , pyrethroid , chemistry , gas chromatography–mass spectrometry , beef cattle , chromatography , toxicology , food science , pesticide , mass spectrometry , zoology , biology , agronomy
Abstract The use of pyrethroids has increased over recent years, and corresponds to a higher exposure of animals to pesticide residues in the environment and diet. Here, an outbreak of pyrethroid poisoning in beef cattle was reported occurring in Midwestern Brazil. After veterinary evaluation, it was observed that the bovines presented common pyrethroid intoxication symptoms. Aiming to identify the cattle poising by pyrethroid, earwax samples were collected from two groups: exposed and nonexposed animals from the same farm. Blind earwax analyses of the bovines were carried out using headspace/gas chromatography–mass spectrometry (HS/GC–MS). The HS/GC–MS analysis detected the presence of bifenthrin in the earwax analysis of the exposed animals, confirmed by the comparison of its MS fragments with a bifenthrin standard, and also by its retention time relative to the internal standard. In summary, HS/GC–MS analysis of earwax emerges as a tool that can be used in the detection and monitoring of bifenthrin poisoning in cattle, as a useful veterinary diagnosis that ensures animal health and the safety of their products.