Abstract
The relative performance of the binary mobile phase in the high-performance liquid chromatography analysis of carbonyl compounds (CCs) was tested using the liquid-phase standards containing 15 aldehyde/ketone–DNPH mixture. The Hichrome column was employed for the analysis of CCs at a flow rate of 1.5 mL min − 1. The binary mobile phases prepared using both acetonitrile/water (AW) and a possible alternative of methanol:water (MW) mixture were examined by their calibration results. The data derived from these two binary phases were then evaluated in terms of three key variables (i.e., resolution, relative sensitivity, and retention time). The relative water content (or the water to organic solvent ratio (W/A) or (W/M)) of the binary phase was found as the key variable for the performance. The results indicate that the optimal resolution of AW combination was attained consistently for most composition, while MW generally suffered from overpressure problem. The changes of water content in the AW mixture led to the changes of all three variables in the quantitative analysis of CCs. The obtained results confirm that the AW mixture should be the optimal elutant for the CC analysis, as other simple binary compositions like MW are limited in many respects.
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Ho, D.X., Kim, KH. Effect of HPLC binary mobile phase composition on the analysis of carbonyls. Environ Monit Assess 180, 163–176 (2011). https://doi.org/10.1007/s10661-010-1779-7
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DOI: https://doi.org/10.1007/s10661-010-1779-7