EIChroM I N D U S T R I E S, I N C. Introduction of Eichrom TEVA Disc: Tc-99 Analysis Anil H. Thakkar, Lawrence Jassin, Michael Fern Eichrom Industries, Inc. and John Sisler EIChroM I N D U S T R I E S, I N C.

EIChroM I N D U S T R I E S, I N C. Current Eichrom Tc-99 Method TEVA Resin column Industry standard Flow rate limitation EIChroM I N D U S T R I E S, I N C.

EIChroM I N D U S T R I E S, I N C. Proposition Perform Tc-99 analysis rapidly with a new chromatographic configuration of the TEVA Resin EIChroM I N D U S T R I E S, I N C.

EIChroM I N D U S T R I E S, I N C. TEVA Disc Glass fiber filter 47 mm diameter 0.5 g silica based TEVA Resin EIChroM I N D U S T R I E S, I N C.

EIChroM I N D U S T R I E S, I N C. Outline of Proposed Method Place TEVA Disc on a filtering funnel Pass 1 liter of sample (at pH 2) through disc (NO vacuum necessary) Rinse disc with 0.01M HNO 3 Transfer disc to LSC vial EIChroM I N D U S T R I E S, I N C.

EIChroM I N D U S T R I E S, I N C. Method (continued) Add 15 mL Packard’s Ultima Gold LLT ® cocktail Stir or shake to form a gel Count on liquid scintillation counter EIChroM I N D U S T R I E S, I N C.

EIChroM I N D U S T R I E S, I N C. LSC Parameters Counter: Packard Tri Carb 2550 TR/AB Beta window: keV tSIE: Typically Counting efficiency 90% Count time: 30 minutes Detection limit: 1.77 pCi/L EIChroM I N D U S T R I E S, I N C.

EIChroM I N D U S T R I E S, I N C. Flow rate Typical 33 mL/minutes (30 minutes for 1 liter sample) Achievable at gravity flow 200 mL/minute under vacuum EIChroM I N D U S T R I E S, I N C.

EIChroM I N D U S T R I E S, I N C. %Tc-99 Recoveries DI Water (1 Liter)

EIChroM I N D U S T R I E S, I N C. %Tc-99 Recoveries Simulated Hanford Ground Water (1 liter)

EIChroM I N D U S T R I E S, I N C. %Tc-99 Recoveries Large Volume SHGW Samples

EIChroM I N D U S T R I E S, I N C. Field Trial: Tc-99 Analysis Data Provided by John Sisler Method comparison (TBP vs. TEVA Disc) Performance comparison Waste reduction Time savings EIChroM I N D U S T R I E S, I N C.

EIChroM I N D U S T R I E S, I N C. TBP Extraction Method Make ~200 mL preserved ground water 6 N H 2 SO 4 (Requires 40 mL conc. H 2 SO 4 ) Add 1% KMnO 4 Add TBP and shake vigorously Collect the TBP and centrifuge Mix 4 mL extract with 0.2 mL 20% SnCl 2 -HCl and 12 mL Insta-Gel ® cocktail Count via LSC for 30 minutes

EIChroM I N D U S T R I E S, I N C. TEVA Disc Method Add 1% KMnO 4 to ~200 mL preserved ground water sample Condition TEVA Disc with 20 mL DI water Pass sample through disc Rinse with 50 mL DI water Transfer disc to LSC vial adding 16 mL Insta- Gel ® cocktail and 0.2 mL SnCl 2 -HCl Count via LSC for 30 minutes

EIChroM I N D U S T R I E S, I N C. Ground Water Analysis Data (ppm)

EIChroM I N D U S T R I E S, I N C. Comparison TBP vs. TEVA Disc

EIChroM I N D U S T R I E S, I N C. TEVA Disc Spike Recovery

EIChroM I N D U S T R I E S, I N C. Waste and Time Savings (Batch of 20)

EIChroM I N D U S T R I E S, I N C. Summary Eichrom TEVA resin disc provides fast separation of Tc-99 Extremely easy sample preparation steps Good, reproducible and consistent recoveries achievable EIChroM I N D U S T R I E S, I N C.