Search Results
You are looking at 1 - 3 of 3 items for
- Author or Editor: K. Viswanathan x
- Refine by Access: All Content x
Abstract
The exchange reaction between14CO2 and sodium salt of p-fluorophenyl acetic acid was found to proceed with greater than 50% isotope incorporation when salt to CO2 ratio was 6
1. The carboxyl-C-14 labelled p-fluorophenyl acetic acid was isolated in a pure form using small chemical concentrations of radioactive14CO2 of high specific activity /30 mCi/mmol/.
Abstract
Carbon-14 labelled p-fluorophenylacetic acid was prepared by heating its sodium salt with14CO2 at 325 °C. The labelled acid after isolation from the reaction mixture was degraded by reaction with sodium azide. From the radioactivity measurements it was observed that no scrambling of14C had taken place and the acid could be designated as carboxyl-14C.
Abstract
The oscillatory characteristics of a catalyzed bromate system is altered by gammairradiation. The alterations observed are probably due to the activation of the reduced form of the metal ion catalyst under gamma-irradiation. However, these alterations could not be accounted for in terms of an effective concentration of bromate acting as a quenching agent under gamma-irradiation conditions as reported in the literature.
