Determination of Δ9-tetrahydrocannabinol and 11-nor-9-carboxy-Δ9-tetrahydrocannabinol in water samples by solid-phase microextraction with on-fiber derivatization and gas chromatography-mass spectrometry

1. Racamonde, I.
2. Villaverde-de-Sáa, E.
3. Rodil, R.
4. Quintana, J.B.
5. Cela, R.