title: Determination of sodium in biological materials by instrumental neutron activation analysis.
abstract: A formalized method for determining sodium in biological materials by instrumental neutron activation analysis is presented. The method includes common procedures from the numerous options available to this historically nonformalized analytical technique. The number of procedural options is restricted to minimize the method's complexity, yet the method is still applicable to a variety of neutron activation facilities. High accuracy and precision are achieved by placing bounds on allowed uncertainty at critical stages of the analysis. Analytical results from the U.S. Food and Drug Administration laboratory and 4 other laboratories demonstrate the method's performance.
authors.affiliation: U.S. Food and Drug Administration, Center for Food Safety and Applied Nutrition, Elemental Research Branch, Washington, DC 20204, USA.
authors.forename: W C
authors.initials: WC
authors.lastname: Cunningham
authors.forename: S G
authors.initials: SG
authors.lastname: Capar
authors.forename: D L
authors.initials: DL
authors.lastname: Anderson
mesh_terms: D000042:Absorption; D000464:Alginates / Q000032:analysis; D000818:Animals; D001205:Ascorbic Acid / Q000032:analysis; D001672:Biocompatible Materials / Q000032:analysis; D002138:Calibration; D002417:Cattle; D002611:Cheese / Q000032:analysis; D020723:Glucuronic Acid; D017408:Guidelines as Topic; D006207:Half-Life; D006603:Hexuronic Acids; D006722:Honey / Q000032:analysis; D007553:Isotope Labeling; D008099:Liver / Q000378:metabolism; D008433:Mathematics; D008461:Meat Products / Q000032:analysis; D009501:Neutron Activation Analysis; D018517:Plant Roots / Q000378:metabolism; D011786:Quality Control; D012015:Reference Standards; D015203:Reproducibility of Results; D012964:Sodium / Q000032:analysis* / Q000378:metabolism; D012979:Sodium Radioisotopes; D018724:Spinacia oleracea / Q000378:metabolism; D014481:United States; D014486:United States Food and Drug Administration
chemical_list: D000464:Alginates; D001672:Biocompatible Materials; D006603:Hexuronic Acids; D012979:Sodium Radioisotopes; D020723:Glucuronic Acid; D012964:Sodium; D001205:Ascorbic Acid