@article{hashemi-moghaddam_2011,  title={A selective flotation-spectrophotometric method for the determination of nickel using dimethylglyoxime},  volume={22},  ISSN={0103-5053},  url={https://doi.org/10.1590/S0103-50532011000600008},  DOI={10.1590/S0103-50532011000600008},  number={6},  journal={Journal of the Brazilian Chemical Society},  publisher={Sociedade Brasileira de Química},  author={Hashemi-Moghaddam, Hamid},  year={2011},  month={Jun},  pages={1056–1060} }