Understanding Variation in Partition Coefficient, Kd, Values

APPENDIX Cd Values For Measuring Laboratory Batch KPacific Northwest National LaboratoryStandard Method Used At d1d1 Washington for the measurement of K values. It is adapted from the proceduredescribed in Relyea et al. (1980). 1.02.0Spiked groundwater: Groundwater with tracer.3.0 Methods for Determining RadionuclideRetardation Factors: Status ReportC.2. Pacific Northwest Laboratory, Richland, WashingtonRelyea, J. F., R. J. Serne, and D. Rai. 1980.Cognizant staff •Task leader •Responsible Staffread and understood before performing any work in the laboratory.radioactive material in the laboratory. The RWP covers a number of topics and shall beRadiation Work Procedure (RWP): This is a set of instructions for safe handling of •Blank tube: Centrifuge tube containing spiked groundwater but no solids. ••retardation events.Tracer: Radioactive element added to groundwater solution to indicate migration and •establishing chemical equilibrium with nontracer aqueous constituents.Cold wash: Contact of solid sample with nonradioactive groundwater for purposes of •Definitionsconsolidated, consolidated porous, and intact, impermeable geological materials.geologic material. This procedure includes descriptions for analyses of unconsolidated, loosely’s) of This procedure describes the method for measuring radionuclide distribution coefficients (KApplicabilitytheir coworkers at the Pacific Northwest National Laboratory in Richland ...