@article{pezzin_rivera_collins_collins_2004,  title={Reduction of trace quantities of chromium(VI) by strong acids},  volume={15},  ISSN={0103-5053},  url={https://doi.org/10.1590/S0103-50532004000100011},  DOI={10.1590/S0103-50532004000100011},  number={1},  journal={Journal of the Brazilian Chemical Society},  publisher={Sociedade Brasileira de Química},  author={Pezzin, Sérgio H and Rivera, José F. Lugo and Collins, Carol H and Collins, Kenneth E},  year={2004},  month={Jan},  pages={58–65} }