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BIBTEX RIS

Determinação simultânea de trialometanos e agrotóxicos em água por cromatografia gasosa

2011; Brazilian Chemical Society; Volume: 34; Issue: 2 Linguagem: Inglês

10.1590/s0100-40422011000200019

ISSN

1678-7064

Autores

Elenice A. Carlos, Antônio Augusto Neves, César Reis, José Humberto de Queiróz,

Tópico(s)

Environmental Chemistry and Analysis

Resumo

BY GAS CHROMATOGRAPHY.A method for simultaneous analysis of trihalomethanes and organochloride and pyrethroid pesticides in water utilizing SPME-HS and GC-ECD was developed.In the optimized method 25 mL of water containing 2% (w/v) Na 2 HPO 4 were heated to 60 °C for 50 min.The fiber (PDMS -100 mm) was exposed to a headspace for the same period.For all analytes it was found that LOQ < MCL (Maximum Contaminant Level), CV < 20% and r > 0.9.The method was applied to potable and surface water samples.Some trihalomethanes were encountered in potable waters, at levels below the MCL.

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