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Calculator 14 - Distribution Coefficient Calculator (Organics)


DISTRIBUTION COEFFICIENT CALCULATOR

**In all calculators keep the units consistent**
Also, see example calculation at bottom of page

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Distribution Coefficient Calculator for Organic Micropollutants

Kd can be estimated by the following equation:

Kd = Koc x foc 
where: 
foc = fraction of organic carbon in soil (as %)
Koc = octonol water partitioning coefficient

log Koc click here to see table of values from Distribution Coefficient Calculator 

Also see EPA Reference

foc Fraction of organic carbon in soil (as %)

Kd:   


Example Calculation

The following is an example calculation for the distribution coefficient (from Appelo and Postma, 1996).

Given: log Koc = 3.30 (Lindane)

foc = 0.3%

Calculation:

Kd = 103.3 x 0.3/100

Kd = 1995.26 x 0.003

Kd = 5.98

 



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