Comprehensive GCxGC of a pesticide mixture spiked into a complex apple matrix

	Column set: Primary column: 30 m x 0.25 mm x 0.25 µm Rxi-5ms Modulation loop: 1 m x 0.15 mm methyl-deactivated FS Secondary column: 1.5 m x 0.15 mm x 0.15 µm RTX-200 Transfer capillary 0.5 m x 0.15 mm methyl-deactivated FS
Extracted-ion chromatogram of Mirex utilising a narrow m/z span of 50 mDa completely removes all matrix interferences. Sub-amu resolution gives an extra degree of certainty to the analysis. This, coupled with the first and second retention times, plus the NIST-like mass spectra obtained, gives maximum confidence in the identification of compounds.