Conventional analytical methodologies for the determination of organic contaminants in water matrices are often laborious and time-consuming, and require a large amount of chemicals. In this study, we have developed a green sample preparation approach using Araucaria angustifolia bracts as a natural sorbent in the bar adsorptive microextraction technique. The determination of eight emerging contaminants (methyl, propyl, and butylparaben, bisphenols A and F, estradiol, ethinylestradiol, and benzophenone) in river-water samples were carried out, employing high-performance liquid chromatography with diode-array detection (HPLC-DAD). Central composite design revealed that the best conditions for the extraction step involved adding 30 % (w/v) NaCl to the sample at pH 6 and leaving it for 180 min. Simplex-centroid design indicated 80 μL of a mixture of acetonitrile and water (3:1) as the best desorption solvent. Desorption time was univariately evaluated as 40 min. Calibration curves obtained correlation coefficients higher than 0.995. The limits of quantification were in the range of 1 to 10 µg L−1 with inter-day precision from 13 to 22 %. Relative recoveries in two river-water samples varied from 62 to 116 %, exhibiting relative standard deviations from 5 to 28 %, which confirmed the method's accuracy and precision. This method contributes to the development of more environmentally friendly sample preparation strategies.
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