Organophosphorus pesticide and ester analysis by using comprehensive two-dimensional gas chromatography with flame photometric detection

- GC × GC-FPD(P-mode) was applied to detection of 37 phosphorus (P)-containing compounds.
- The method improves resolution of P-compounds that coelute in the first dimension.
- P-compounds are analyzed with excellent sensitivity supported by cryogenic modulation.
- The FPD(P-mode) selectivity allows analysis in high hydrocarbon (H/C) matrix.
- Soil samples and spiked chemical weapon compounds in H/C matrix are readily screened.