Radioactive tracers assemblies

Radioactive Tracer Method for Detecting the Presence of Firing-Pin Supports in Fuze Assemblies (Ref 2)... 

Radioactive tracer studies are well suited for zone electrophoresis because the components can be located, analytically determined, and investigated for radioactivity using the same strip (see Fig. 7). The rate of formation of the serum proteins has been studied by incorporation in vivo of valine C (Gros et al., 1952) and of methionine S (Niklas and Maurer, 1952). In vivo incorporation of P into serum has also been investigated with this technique the iodine was found to assemble in a nondialyzable fraction between albumin and ai-globulin in rabbit (Maurer and Teichenbach, 1952) and near a2-globulin in man (Larson et al., 1952). 

These features are shown schematically in Fig. 1. In this figure, the tracer injector—already assembled and containing the vial of radioactive isotope—is inserted into the input line through a valve. This valve is fitted with a lubricator to prevent leakage along the transfer tube. 

Before the tracer injectcr Is load , it is inserted in the lubricator wit the valve dosed. The lubricator u tightened and tested for leaks by opt mg the valve. The valve is then dostd the piston assembly is removed, the vial containing the radioactive topes is transferred from a shield transfer case into the shield d... 

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