... the range of 50–1,000 ng/mL with detection limits of 10–20 ng/mL, and for oxa-zolam it could be observed in the range of 200–1,000 ng/mL with detection limits of 50 ng/mL in urine and 100 ng/mL ... reversed phase col-umn” is one of the columns of this type. In this section, a method of LC/MS analysis of triazolam and its metabolites ( 4-hydroxytriazolam and α-hydroxytriazolam) using the ... diazepam and chlordiazepoxide, and 289ESI mass spectra of triazolam, 4-hydroxytriazolam and α-hydroxytriazolam.⊡ Figure 4.2Toxic and fatal concentrations290 BenzodiazepinesMass chromatograms of...