... tentative identi cation of drugs, a UV absorbance spectrum can be measured together with the con rmation of coincidence of retention time of a test peak with that of an authentic compound. ... control of her respiration and circulation, but she died in spite of the in-tensive care on the second day. e analysis of blood sampled about 15 h a er ingestion showed 71.3 µg/mL of carbamazepine, ... resulting in chang-es of composition ratio of the mobile phase.i) According to the kinds of columns used (manufacturer, type, internal diameter and length), the turn of drugs to be eluted and...