@article{araujo_prieto_troconis_urribarri_sandrea_mercado_2011,  title={Determination of acidic herbicides in water samples by in situ derivatization, single drop microextraction and gas chromatography-mass spectrometry},  volume={22},  ISSN={0103-5053},  url={https://doi.org/10.1590/S0103-50532011001200016},  DOI={10.1590/S0103-50532011001200016},  number={12},  journal={Journal of the Brazilian Chemical Society},  publisher={Sociedade Brasileira de Química},  author={Araujo, Lilia and Prieto, Avismelsi and Troconis, María and Urribarri, Grilena and Sandrea, Williams and Mercado, Jair},  year={2011},  month={Dec},  pages={2350–2354} }