@article{nolasco_gusmão_siqueira_2007,  title={Urinary 2,5-hexanedione in workers exposed to n-hexane: influence of the sample treatment},  volume={30},  ISSN={0100-4042},  url={https://doi.org/10.1590/S0100-40422007000400009},  DOI={10.1590/S0100-40422007000400009},  number={4},  journal={Química Nova},  publisher={Sociedade Brasileira de Química},  author={Nolasco, Daniela Magalhães and Gusmão, Andréia and Siqueira, Maria Elisa Pereira Bastos de},  year={2007},  month={Jul},  pages={805–808} }