Ultrasound-assisted dispersive liquid-liquid microextraction for the speciation of traces of chromium using electrothermal atomic absorption spectrometry.

@article{LpezGarca2013UltrasoundassistedDL,
  title={Ultrasound-assisted dispersive liquid-liquid microextraction for the speciation of traces of chromium using electrothermal atomic absorption spectrometry.},
  author={Ignacio L{\'o}pez-Garc{\'i}a and Marisol Brice{\~n}o and Yesica Vicente-Mart{\'i}nez and Manuel Hern{\'a}ndez-C{\'o}rdoba},
  journal={Talanta},
  year={2013},
  volume={115},
  pages={166-71}
}
A microextraction procedure for the speciation of very low concentrations (0.005-0.2 µg L(-1)) of chromium is discussed. To the aqueous sample (10 mL), diluted hydrochloric acid, sodium chloride and a small amount of tributylphosphate (80 µL) are incorporated, and the mixture is submitted to ultrasounds for 10 min. The organic phase recovered after… CONTINUE READING