Application of thermoresponsive HPLC to forensic toxicology: determination of barbiturates in human urine Kanno S et al. - A high-performance liquid chromatography method has been developed for assays of five barbiturates in human urine using a new thermoresponsive polymer separation column, which is composed of poly(N-isopropylacrylamide). The method with this new column type seems to have high potential for extensive use in forensic toxicology for analysis of many drugs and poisons by HPLC and HPLC-mass spectrometry. [more...]