o-DGT Devices for the Determination of Emerging Contaminants in Aqueous Matrices

Samplers based on the diffusive gradients in thin films for organics (o-DGT) were developed and applied Brazilian aqueous matrices determination of four emerging contaminants (EC): 4-octylphenol, 4-nonylphenol, triclosan, bisphenol A. The OASIS HLB resin used as binding phase presented a high sorption capacity extraction associated with sonication, using mixture acetonitrile methanol (2:1, v v-1) solvent, provided higher desorbed mass compounds. diffusion coefficients determined experimentally range values found literature pH ionic strength influenced some compounds by phase. substances detected quantified tap river water samples after 7 days deployment gas chromatography tandem spectrometry (GC-MS/MS). Finally, results indicate deficiencies current wastewater, well treatment systems, could contribute future to improvement public policies basic sanitation Brazil.