Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Radio-TLC chromatograms on silica gel coated aluminium plates of (A) 99mTcO4-, solvent system 1; (B) 99mTcN2+ intermediate, solvent system 1, (demonstrating the absence of pertechnetate at this stage); (C) 99mTcN2+ intermediate, solvent system 2 and (D) 99mTc-7, solvent system 2 (demonstrating the absence of both pertechnetate and the Tc-nitride intermediate in the final product).
