title: Elemental analysis of biological specimens in air with a proton microprobe.
abstract: The unique capabilities of the proton microprobe in an atmospheric environment as a biological tool are illustrated in studies of arsenic and mercury distributions in siingle strands of hair from poisoning victims and of the distributions of several abundant elements in frozen hydrated eye and kidney specimens from rats.
mesh_terms: D000818:Animals; D001151:Arsenic / Q000032:analysis; D020261:Arsenic Poisoning; D002713:Chlorine / Q000032:analysis; D005123:Eye / Q000032:analysis*; D006197:Hair / Q000032:analysis*; D006801:Humans; D007668:Kidney / Q000032:analysis*; D007908:Lens, Crystalline / Q000032:analysis; D008628:Mercury / Q000032:analysis; D008767:Methylmercury Compounds / Q000506:poisoning; D011188:Potassium / Q000032:analysis; D051381:Rats; D013057:Spectrum Analysis / Q000379:methods*; D013455:Sulfur / Q000032:analysis; D015032:Zinc / Q000032:analysis / Q000506:poisoning
chemical_list: D008767:Methylmercury Compounds; D002713:Chlorine; D013455:Sulfur; D008628:Mercury; D015032:Zinc; D001151:Arsenic; D011188:Potassium