Packed-column supercritical fluid chromatography coupled with solid-phase extraction for the determination of organic microcontaminants in water.
A multiresidue method for the analysis of 35 common contaminants (including pesticides, polycyclic aromatic hydrocarbons and phenols) in lough and river waters from Castilla y León Spanish region, by using supercritical fluid chromatography (SFC) with five silica packed columns, is described. In order to decrease the detection limits, a preconcentration step by coupling solid-phase extraction to the SFC system was used. The different variables affecting the extraction procedure were studied and optimized, selecting the Isolute Env+ as the best sorbent. The detection limits achieved ranged from 0.4 to 2.6 micrograms l-1.
Toribio
L
L
Department of Analytical Chemistry, Faculty of Sciences, University of Valladolid, Spain.
del Nozal
M J
MJ
Bernal
J L
JL
Jiménez
J J
JJ
Serna
M L
ML
D002845:Chromatography / Q000379:methods*; D004784:Environmental Monitoring; D010575:Pesticides / Q000032:analysis; D010636:Phenols / Q000032:analysis; D011084:Polycyclic Aromatic Hydrocarbons / Q000032:analysis*; D015203:Reproducibility of Results; D013030:Spain; D014867:Water / Q000032:analysis*; D014873:Water Pollutants / Q000032:analysis*
D010575:Pesticides; D010636:Phenols; D011084:Polycyclic Aromatic Hydrocarbons; D014873:Water Pollutants; D014867:Water