Preparative capillary isotachophoresis as a sample pretreatment technique for complex ionic matrices in high-performance liquid chromatography

Ionic liquid as a complexation and extra

Ionic liquid as a complexation and extraction medium combined with high-performance liquid chromatography in the evaluation of chromium(VI) and chromium(III) speciation in wastewater samples

✍ Li-Yan Ying; Hai-Liang Jiang; Sai-cun Zhou; Yi Zhou 📂 Article 📅 2011 🏛 Elsevier Science 🌐 English ⚖ 383 KB

A simple method has been proposed for the determination of chromium species by high-performance liquid chromatography (HPLC) after preconcentration by the ionic liquid, 1-butyl-3-methyimidazolium hexafluorophosphate ([C 4 MIM][PF 6 ]). The simultaneous preconcentration of Cr(VI) and Cr(III) in waste