[Pesticide determination in water after separation on reverse-phase minicolumns].
The lindane, methoxichlor, parathion and methylparathion content of water is measured in a gas-chromatography fitted with a capture electron detector. Prior extraction and concentration are done by using Sep-Pak C18 cartridges with ethyl acetate as eluent, which is offers certain advantages over hexane and methanol. With solutions of 0.5 ppb recovery values of 102.7% (lindane), 85% (methoxychlor), 94.7% (parathion) and 93.1% (methylparathion) are obtained. The method proposed is less time-consuming and less expensive than the usual consisting of extraction with dichloromethane: hexane (15:75 v/V) and concentration in a Kuderna-Danish.
Molto
J C
JC
Font
G
G
Farre
R
R
Mañes
J
J
D002849:Chromatography, Gas; D006843:Hydrocarbons, Chlorinated; D007306:Insecticides / Q000032:analysis* / Q000302:isolation & purification; D009943:Organophosphorus Compounds; D010573:Pesticide Residues / Q000032:analysis*; D014873:Water Pollutants / Q000032:analysis*; D014874:Water Pollutants, Chemical / Q000032:analysis*
D006843:Hydrocarbons, Chlorinated; D007306:Insecticides; D009943:Organophosphorus Compounds; D010573:Pesticide Residues; D014873:Water Pollutants; D014874:Water Pollutants, Chemical
Determinación de plaguicidas en aguas previa separación sobre minicolumnas de fase reversa.