title: Determination of selenium in biological samples by gas-liquid chromatography with electron-capture detection.
abstract: Selenium can be determined quantitatively in biological samples after nitric acid-magnesium nitrate digestion and formation of 5-nitropiazselenole, by extraction into toluene for gas-liquid chromatography with electron-capture detection. The method is suitable for the determination of selenium in orchard leaves, bovine liver and human placenta, hair, blood and urine.
mesh_terms: D002849:Chromatography, Gas / Q000379:methods*; D002853:Chromatography, Liquid; D006197:Hair / Q000032:analysis; D006801:Humans; D010924:Placental Extracts / Q000032:analysis; D010944:Plants / Q000032:analysis; D012643:Selenium / Q000032:analysis* / Q000097:blood / Q000652:urine
chemical_list: D010924:Placental Extracts; D012643:Selenium