Recovery and determination of adsorbed technetium on Savannah River Site charcoal stack samples

Experimental results are provided for the sample analyses for technetium in charcoal samples placed in-line with a Savannah River Site (SRS) processing stack effluent stream as a part of an environmental surveillance program. The method for Tc removal from charcoal was based on that originally developed with high purity charcoal. Presented is the process that allowed for the quantitative analysis of 99 Tc in SRS charcoal stack samples with and without 97 Tc as a tracer. The results obtained with the method using the 97 Tc tracer quantitatively confirm the results obtained with no tracer added. All samples contain 99 Tc at the pg·g −1 level.