Liquid–liquid extraction followed by solid-phase extraction for the determination of lipophilic pesticides in beeswax by gas chromatography–electron-capture detection and matrix-matched calibration☆

2004 ◽  
Vol 1048 (1) ◽  
pp. 89-97 ◽  
Author(s):  
J JIMENEZ ◽  
J BERNAL ◽  
M NOZAL ◽  
C ALONSO
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