@article{cai_xu_2011,  title={Determination of iron and aluminum based on the catalytic effect on the reaction of xylene cyanol FF with hydrogen peroxide and potassium periodate},  volume={22},  ISSN={0103-5053},  url={https://doi.org/10.1590/S0103-50532011001000021},  DOI={10.1590/S0103-50532011001000021},  number={10},  journal={Journal of the Brazilian Chemical Society},  publisher={Sociedade Brasileira de Química},  author={Cai, Longfei and Xu, Chunxiu},  year={2011},  month={Oct},  pages={1987–1992} }