Neutron activation analysis theory

Theory of Instrumental Neutron Activation Analysis (INAA)... 

Minerals are deposited in hair as it grows and, in theory, the hair reflects the mineral status of an individual at the time of hair growth. Scientific analytical methods, such as atomic absorption spectometry, neutron activation analysis, and x ray fluorescence spectometry, are sensitive enough to detect the levels of minerals in hair samples. Because hair samples are easily and painlessly obtainable, and because hair samples are stable and store easily, there is considerable interest in the use of hair as a diagnostic tool for mineral deficiencies and/or toxicities. However, like many other diagnostic tests, hair analysis is only a tool to complement other tests and observations. It is not a panacea. For the reasons which follow, an individual s nutritional status cannot be assessed solely on the basis of a hair analysis ... 

See also Activation Anaiysis Neutron Activation. Extraction Solvent Extraction Principles. Geochemistry Sediment. Ion Exchange Overview. Mass Spectrometry Ovenriew. Radiochemical Methods Gamma-Ray Spectrometry. Sample Dissolution for Elemental Analysis Dry Ashing. Spectrophotometry Overview. X-Ray Fluorescence and Emission X-Ray Fluorescence Theory. 

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