Tissue copper determinations by neutron activation analysis

Determination of tissue calcium by nondestructive neutron activation analysis.

A method is described for measuring the concentration of calcium in arterial tissue by neutron activation analysis. The principal advantage is that the method is nondestructive and is ideal for analytical situations in which multiple biochemical measurements are required on a few-milligram sample. Application of the method is illustrated here by a study of aortic calcium metabolism in pigeons a...

Neutron Activation Analysis Neutron Activation Analysis

CONTENT NEUTRON ACTIVATION ANALYSIS

Cadmium analysis by radiochemical neutron activation analysis.

Radiochemical neutron activation analysis (RNAA) has been routinely used at the National Bureau of Standards to analyze Cd in a variety of environmentally important matrices. The method used to separate Cd from other neutron-activated products is solvent extraction. Zinc diethyldithiocarbamate [Zn(DDC)2] in chloroform will quantitatively extract Cd from an aqueous solution over a pH range from ...

Neutron Star Mass Determinations

I review attempts made to determine the properties of neutron stars. The focus is on the maximum mass that a neutron star can have, or, conversely, the minimum mass required for the formation of a black hole. There appears to be only one neutron star for which there is strong evidence that its mass is above the canonical 1.4M⊙, viz., Vela X-1, for which a mass close to 1.9M⊙ is found. Prospects...

Neutron Activation Analysis