Jump to main content

Contact Us

EPA On-line Tools for Site Assessment Calculation

Module Home Objectives Table of Contents Previous < Next >


Retardation Factor Calculator
Retardation Factor R = 1 + rbkd /q

R = retardation factor
rb = bulk density = rs(1-q)
rs = solids density
q = porosity
kd = (soil) distribution coefficient = foc Koc
foc = fraction organic carbon
Koc = organic carbon/water partition coefficient

Input Parameters
Site Name
Date
Porosity (q ) (Try 0.25)
Fraction Organic Carbon (foc) (Try 0.0001)
Chemical Data Source
Note:
Data revision date
Chemical


Default Parameters
Solids Density (rs) Default
Koc value L/kg


Results
Bulk Density (rb) g/cm3
kd L/kg
Retardation Factor (R)

Previous Top ^ Next

Home | Glossary | Notation | Links | References | Calculators





Contact the Athens, GA Ecosystems Research Web editor to ask a question, provide feedback, or report a problem.

Jump to main content.