title: The 14-MeV neutron activation analysis of Chinese medicines for protein, phosphorus, potassium and magnesium contents.
abstract: Elementary form of nitrogen (protein), phosphorus, potassium and magnesium contained in sixty-six different kinds of Chinese medicines were analyzed by means of 14-MeV neutron activation technique. The % contents of these elements in Chinese medicines range from 4.1 to 38.6% (average: 12.7%) for protein, 0.1 to 10.5% (average: 1.3%) for phosphorus, 1.6 to 13.8% (average 4.5%) for potassium and 0.1 to 2.5% (average: 0.5%) for magnesium. The procedure proves to be quite precise and potentially quite accurate, while only requiring about 20 minutes per sample. The methods of determining the elements are described.
mesh_terms: D000201:Activation Analysis; D006723:Hong Kong; D008274:Magnesium / Q000032:analysis*; D008516:Medicine, Chinese Traditional; D008518:Medicine, East Asian Traditional; D009501:Neutron Activation Analysis; D009584:Nitrogen / Q000032:analysis*; D010758:Phosphorus / Q000032:analysis*; D010946:Plants, Medicinal / Q000032:analysis*; D011188:Potassium / Q000032:analysis*
chemical_list: D010758:Phosphorus; D008274:Magnesium; D009584:Nitrogen; D011188:Potassium