Identification and quantification of 77 pesticides in groundwater using solid phase coupled to liquid-liquid microextraction and reversed phase liquid chromatography

Citation
K. Vandecasteele et al., Identification and quantification of 77 pesticides in groundwater using solid phase coupled to liquid-liquid microextraction and reversed phase liquid chromatography, ANALYT CHEM, 72(14), 2000, pp. 3093-3101
Citations number
38
Categorie Soggetti
Chemistry & Analysis","Spectroscopy /Instrumentation/Analytical Sciences
Journal title
ANALYTICAL CHEMISTRY
ISSN journal
00032700 → ACNP
Volume
72
Issue
14
Year of publication
2000
Pages
3093 - 3101
Database
ISI
SICI code
0003-2700(20000715)72:14<3093:IAQO7P>2.0.ZU;2-W
Abstract
This paper describes a method for the extraction, separation, identificatio n, and quantification of 77 pesticides (neutral, acidic, and basic) includi ng some 8-triazine metabolites. The method is appropriate for organically ( e.g. with humic acids) highly loaded groundwater samples. A comparative stu dy of a pH-controlled mixed solid phase (LiChroprep RP18/LiChrolut EN) extr action with different desorption solvents (acetonitrile or acetonitrile and dichloromethane/methanol) is elaborated. A subsequent liquid-liquid microe xtraction reduces matrix effects,The pesticides in the sample are separated using RP-HPLC, detected, and identified by diode array. The efficiency is illustrated on a natural groundwater sample from a phreatic aquifer.