Electronic interaction chromatography on porous graphitic carbon. Separation of [99mtc]pertechnetate and perrhenate anions

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Abstract
The oxo anions of technetium‐99m and rhenium, pertechnetate (TcO) and perrhenate (ReO), have been separated by high performance liquid chromatography on porous graphitic carbon with aqueous trifluoroacetic acid or salt solutions as eluent. Chromatographic retention was a result of electronic interaction between the lone pair electrons of the anions and the delocalised ±‐electron clouds of the porous graphitic carbon. Retention and resolution can be controlled by the concentration and/or species of eluents which can compete with the solutes for electronic interaction being used for elution.