ELECTROPHORETIC BEHAVIOR OF AROMATIC-CONTAINING ORGANIC-ACIDS AND THEDETERMINATION OF SELECTED COMPOUNDS IN WATER AND SOIL BY CAPILLARY ELECTROPHORESIS

The behavior of 56 aromatic-containing organic acids (ACOAs) was obtai ned under free zone electrophoresis and under micellar electrokinetic chromatography using cholic acid as the micellar agent. The compound c lasses encompass phenoxy acid herbicides, phenylalkanoic acids, aromat ic carboxylic acids, aromatic sulfonic acids, azo and other dyes, and ACOAs containing nitrogen. Seven compounds were studied with respect t o extraction and cleanup from spiked water and soil at levels of 1.0 a nd 0.1 mug/g and 100 and 20 mug/g, respectively. A general scheme of i solation and cleanup was developed that used extraction disks and soli d-phase extraction cartridges. Average recoveries for three determinat ions ranged from 26.5 to 98.2% with relative standard deviations rangi ng from 6.7 to 55%.