@article{andrade_nascentes_costa_2009,  title={Cadmium and lead cloud point preconcentration and determination in tobacco samples by thermospray flame furnace atomic absorption spectrometry},  volume={20},  ISSN={0103-5053},  url={https://doi.org/10.1590/S0103-50532009000800011},  DOI={10.1590/S0103-50532009000800011},  number={8},  journal={Journal of the Brazilian Chemical Society},  publisher={Sociedade Brasileira de Química},  author={Andrade, Frank P. and Nascentes, Clésia C. and Costa, Letícia M.},  year={2009},  pages={1460–1466} }