Jv. Sancho et al., DIRECT DETERMINATION OF BROMACIL AND DIURON RESIDUES IN ENVIRONMENTALWATER SAMPLES BY COUPLED-COLUMN LIQUID-CHROMATOGRAPHY AND LARGE-VOLUME INJECTION, Journal of chromatography, 761(1-2), 1997, pp. 322-326
Citations number
24
Categorie Soggetti
Chemistry Analytical","Biochemical Research Methods
A rapid procedure For the determination of two herbicides in environme
ntal water samples is described. The method makes use of the potential
of coupled-column liquid chromatography for the trace determination o
f polar compounds by direct large-volume injection of aqueous samples.
With direct injection of 2000-mu 1 samples, detection limits dawn to
0.1 mu g/l and an analysis time of about 10 min can be achieved, rende
ring an overall procedure with a throughput of 50 samples per day. Dri
nking and surface water samples spiked at levels between 0.2 and 1 mu
g/l yielded average recoveries between 83-107% (n=5) with relative sta
ndard deviations between 3-8%. The calibration graphs are linear over
at least three orders of magnitude.