Separation of triazoles from real samples with capillary electrophoresis

Abstrakt

The CE has become one of the advantageous tools in fungicides analysis in complex matrices due to its simplicity and separation efficiency. The separation of a group of thee triazole (i.e. penconazole, tebuconazole, and cyproconazole) fungicides was achieved with CD-MEKC with anionic Sγ-CD as a selector at pH=4.8.

The background electrolyte consisted of TRIS phosphate buffer (50 mM) and 15 mM SDS. The separation was performed on uncoated fused silica capillary with 500/425 mm (total/effective) length under -15 kV separation voltage.

Achieved LOD values with this method were: 0.73; 1.88; 0.60; 1.18 (µmol/L) for penconazole, tebuconazole, cyproconazole A and B respectively.

Klíčová slova

• capillary electrophoresis
• penconazole
• tebuconazole
• cyproconazole
• γ-cyclodextrin