@article{ferreira_lemos_costa_jesus_carvalho_1998,  title={Spectrophotometric Determination of Aluminium in Iron Ores Using Solid-Phase Extraction},  volume={9},  ISSN={0103-5053},  url={https://doi.org/10.1590/S0103-50531998000200006},  DOI={10.1590/S0103-50531998000200006},  number={2},  journal={Journal of the Brazilian Chemical Society},  publisher={Sociedade Brasileira de Química},  author={Ferreira, Sérgio Luis Costa and Lemos, Valfredo Azevedo and Costa, Antônio Celso Spinola and Jesus, Djane Santiago de and Carvalho, Marcelo Souza de},  year={1998},  month={Apr},  pages={151–156} }