Appendix D - Parameters for Dissolution of Insoluble Tritiated Particulate Materials

DOE-HDBK-1184-2004

APPENDIX D - PARAMETERS FOR DISSOLUTION OF INSOLUBLE TRITIATED

PARTICULATE MATERIAL S

(From Mound Technical Basis Document for Stable Tritiated and Particulate and Organically

Bound Tritium (Mound 2000))

The following table compiles literature data for dissolution of tritium into physiological fluid from

various forms of tritium-containing particulate materials. Parameters are given for retention of

tritium in the source material as described by (typically) the double exponential:

S(t) = Fr exp(-Rrt) + Fs exp(-Rst)

(eq. D-1)

Where:S(t) = the tritium fraction retained in source material at time t

Fr = the fraction of rapidly dissolving material ("fast component")

Fs = the fraction of slowly dissolving material ("slow component")

Rr = the dissolution rate of rapidly dissolving material

Rs = the dissolution rate of slowly dissolving material

Particle size characteristics and literature references are also provided.

Size

Source

-1

Parameters

Reference

Rr, d

Rs, d

Material

(m)

CMD=0.95

0.55

4.6

0.35

0.093

s g=1.93

Cheng (1999a)

TiTx

(a)

AMD=3.5

AMAD=5.7

Same as

Cheng (1997)

TiTx

0.24

0.71

0.76

0.021

above

CMD=103

s g=1.58

Cheng (1997)

TiTx

1.0

0.0019

AMD=193

AMAD=312

CMD=0.32

Cheng(1999b)

s g=2.24

ZrTx

0.48

0.0165

0.52

0.0018

Kropf (1998)

AMD=2.25

AMAD=4.78

CMD=1.04

s g=2.41

HfTx

0.0006

0.0095

0.9994

2.3E-6

Cheng (1999c)

AMD=10.6

(b)

AMAD=30

HfTx

0.00015

0.02

Same as

0.9997

1E-7

Cheng (1999c)

(b)

(c)

above

HfTx

0.008

0.2

0.992

~5E-6

"respirable"

Ref 4 in McConville (1995)

CMD=3.8

0.23

0.079

0.16

0.0032

s g=2.8

Cool (1983)

Glass

AMD~20

[Sample KMS2]

AMAD~19

(d)

Same as

Cool (1983)

0.27

0.23

0.027

0.03

above

[Sample KMS1]

Glass

(e)

Luminous

0.12

~10

0.88

0.019

----

Rudran (1988)

Paint