R. Elharrak et al., DETERMINATION OF POLYCYCLIC AROMATIC-HYDROCARBONS IN WATER BY SOLID-PHASE EXTRACTION MEMBRANES, International journal of environmental analytical chemistry, 64(1), 1996, pp. 47-57
A method for determining sixteen PAHs, which are included in the US En
vironmental Protection Agency list of priority pollutants is described
. The procedure involves column liquid chromatography with fluorescenc
e and UV detection and off-line concentration with solid-phase extract
ion membranes. In this study, two different membranes are tested, C18
and SDB. Different steps for cleaning and conditioning the membranes t
o prevent interfering peaks in the chromatogram were studied. The use
of an organic solvent and Brij-35 as surfactant to prevent the analyte
s from being adsorbed on inner walls or surfaces is studied. The metho
d enables these compounds to be determined in tap and river water samp
les at low ng 1(-1) levels.