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Método analítico para análise de biocidas de têxteis em LC-DAD

Método analítico para análise de biocidas de têxteis em LC-DAD

Muhammad Jahangir / Uzman Khan

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Editorial:
KS OmniScriptum Publishing
Año de edición:
2025
Materia
Química
ISBN:
9786137360743
65,49 €
IVA incluido
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Foi desenvolvido um método rápido para a deteção de biocidas em têxteis que entram em contacto direto com a pele humana, uma vez que os biocidas recentemente regulamentados carecem de métodos de ensaio validados. O método centra-se na análise de quatro biocidas: MIT, CIT, OIT e Triclosan. As amostras têxteis foram extraídas por sonicação metanólica, purificadas por centrifugação e filtração e analisadas com uma coluna C18 com 0,4% de ácido acético: metanol (1:1 v/v) em condições isocráticas a 280 nm de comprimento de onda. Os parâmetros de extração foram optimizados e a curva de calibração mostrou uma forte linearidade (r² ≥ 0,9995) no intervalo de 1,0-5,0 mg L-¹. O método demonstrou altas recuperações (95%-108%) com desvios padrão relativos ≤ 4%, enquanto os LODs e LOQs variaram de 0,06-0,12 mg L-¹ e 0,21-0,38 mg L-¹, respetivamente. Os resultados confirmaram a fiabilidade do método para a deteção quantitativa em amostras têxteis reais.

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