Ion-pair solid-phase extraction of trace amounts of ionic liquid cations in fresh and seawater samples was written by Stepnowski, Piotr;Nichthauser, Joanna. And the article was included in Analytical Sciences in 2008.HPLC of Formula: 79917-89-8 This article mentions the following:
The usefulness of ion-pair reagents in selective solid reversed-phase extraction of one N-butyl-4-methylpyridinium and 4 short-chain alkylimidazolium ionic liquid cations from aqueous media was studied using various concentrations of alkylsulfonates with different alkyl chain lengths. Final recoveries of the 2 cations with the shortest alkyl residues were poorer than those of the other, more hydrophobic compounds The recovery values were little affected by the different concentrations of the reagents. In nearly all cases, the best recoveries were obtained with the 1-heptanesulfonate reagent. The anal. performance parameters included excellent linearity over 4 orders of magnitude, with limits of detection 0.01-0.06 ppm, and very good precision and accuracy. The method was used to extract ionic liquids from spiked seawater and freshwater samples. Recoveries and limits of detection were quite similar to those obtained with preconcd. standard solutions In the experiment, the researchers used many compounds, for example, 1-Methyl-3-propylimidazolium Chloride (cas: 79917-89-8HPLC of Formula: 79917-89-8).
1-Methyl-3-propylimidazolium Chloride (cas: 79917-89-8) belongs to imidazole derivatives. Imidazole is the basic core of some natural products such as histidine, purine, histamine and DNA based structures, etc. Among the different heterocyclic compounds, imidazole is better known due to its broad range of chemical and biological properties. Imidazole derivatives have antibacterial, antifungal and anticancer functionality. It interacts with DNA and also binds to protein and stops cell division.HPLC of Formula: 79917-89-8
Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem