Room temperature ionic liquid-based dispersive liquid-liquid microextraction combined with flame atomic absorption spectrometry for the speciation of chromium(III) and chromium(VI)

► A simple and selective and sensitive DLLME-FAAS for the determination of Cr(III)/Cr(VI) ► Cr(VI) and total chromium (Cr(VI) + Cr(III)) could be extracted by [C8MIM][PF6] at the pH value of 5.0 and 6.5. ► The proposed procedure was applied to the speciation of Cr(III)/Cr (VI) in water samples.