@article{chamsaz_eftekhari_atarodi_asadpour_ariani_2012,  title={Preconcentration procedure using vortex agitator system for determination of trace levels of cadmium by flame atomic absorption spectrometry},  volume={23},  ISSN={0103-5053},  url={https://doi.org/10.1590/S0103-50532012005000026},  DOI={10.1590/S0103-50532012005000026},  number={9},  journal={Journal of the Brazilian Chemical Society},  publisher={Sociedade Brasileira de Química},  author={Chamsaz, Mahmoud and Eftekhari, Mohammad and Atarodi, Atefe and Asadpour, Saeid and Ariani, Maral},  year={2012},  month={Sep},  pages={1630–1635} }