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DETERMINATION OF AROMATIC AMINES IN SOILS
Citation:
Pace, C. M., J. R. Donnelly, J. L. Jeter, W. Brumley, AND G. Sovocool. DETERMINATION OF AROMATIC AMINES IN SOILS. Journal of the Association of Official Analytical Chemists International 79(3):777-783, (1996).
Description:
A rapid liquid chromatographic(LC)method with ultraviolet(UV)or fluorescence detection was developed for parts-per-billion levels of aromatic amines in soils. 2,4-Diaminotoluene, pyridine,aniline,2-picoline,2-toluidine,5-nitro-2-toluidine,2-methyl-6-ethylaniline,4-aminobiphenyl,4-nitroaniline,1-naphthylamine,2-methoxyaniline,and 2-naphtylamine were tested. The method involves extraction by sonication with 1% ammonium hydroxide-acetonitrile and analysis by LC using gradient elution with aqueous 0.01M ammonium acetate-0.0005% triethylamine and acetonitrile. Recoveries of 67-106%(9.2 and 34% for 1-and 2-naphthylamines, respectively)were obtained from sand and organic-containing soils spiked in the parts-per-million range. Recoveries from sand spiked at 8.5-25 ppb were 88-105%. Recoveries from organic soil varied from nondetectable to 86% at spikes of 85-500 ppb. Detection limits ranged from 0.5 ppb for highly fluorescent 2-naphthylamine(by fluorescence detection)to 0.5 ppm for nonfluorescing pyridines(by UV detection).