A fused silica capillary column (DB-1, J&W Scientific, Folsom, CA, i.d. 0.25 mm 60 m, 0.25 mm film thickness) was used and interfaced directly into the ion source of the MSD
A fused silica capillary column (DB-1, J&W Scientific, Folsom, CA, i.d. 0.25 mm 60 m, 0.25 mm film thickness) was used and interfaced directly into the ion source of the MSD