Quantification of Pharmaceuticals and Personal Care Product Residues in Surface and Drinking Water Samples by SPE and LC-ESI-MS/MS
نویسندگان
چکیده
Atualmente as nações industrializadas se deparam com um novo problema, a contaminação das águas por contaminantes emergentes, entre eles fármacos e produtos de cuidado pessoal (PPCPs). Neste trabalho, um método analítico empregando extração em fase sólida (SPE) e cromatografia líquida com fonte de ionização eletrospray acoplada com espectrometria de massas em série foi desenvolvido e validado para a determinação de nimesulida, amitriptilina, enalapril, glibenclamida, haloperidol e metilparabeno em amostras de água. O estudo da SPE envolveu a utilização de um planejamento fatorial fracionado 2v 5-1 para a seleção das variáveis que afetam o procedimento de extração. Os limites de detecção variaram de 0,01 a 0,2 μg L e os de quantificação de 0,05 a 1,0 μg L. Obteve-se uma boa linearidade (coeficiente de determinação, r > 0,99) para todos os compostos. As recuperações variaram entre 65 e 120% com valores de desvio padrão relativo (RSD) menores que 20%. O método foi aplicado para a determinação de PPCPs em amostras de água superficial e potável durante 3 meses. Os níveis de PPCPs detectados foram da ordem de μg L.
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