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Abstract
The aim of the current work is to discuss a quick method for the isolation and enrichment of denatonium benzoate from low-solidification fluids applied for cooling of internal-combustion engines (liquids based on ethylene and propylene glycol). This method, i.e. solid phase extraction (SPE), can be coupled with other techniques, mostly high performance liquid chromatography in reversed phase mode (RP HPLC).
The optimization of extraction process is based on SPE column and consideration type of packing (different of functional groups); whether there are any joining of beds (sandwich type). Thanks to such solutions, the optimized methodology of preparation of sample permitted the attainment of high recoveries (about 90 %) and reproducibility of quantitative and qualitative results of determined analyte concentration (RSD = ± 1%).
ACKNOWLEDGMENT
R. M. Gadzała-Kopciuch thanks the Foundation of Polish Science for a scholarship.