Table 99-17. Activity Concentration of Selected Radionuclides Measured by Alpha Spectroscopy
in Lake Carlsbad Sediment Samples Collected during 1998
See CEMRC 1999 Report "Radiological and non-radiological constituents in surface water and sediments
at selected reservoirs" for descriptions of locations and methods of data collection.
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|
239,240Pu |
|
Collection Date |
Water Depth
(m) |
aActivity
Concentration
(mBq g-1) |
bSD
(mBq g-1) |
cMDC
(mBq g-1) |
|
3/17/98 |
0.6 |
1.11E-01 |
1.96E-02 |
2.89E-02 |
|
3/17/98 |
0.6 |
1.11E-01 |
2.44E-02 |
6.66E-02 |
|
3/19/98 |
2.4 |
7.40E-02 |
2.15E-02 |
3.22E-02 |
|
3/19/98 |
2.7 |
2.22E-01 |
3.44E-02 |
4.81E-02 |
|
8/19/98 |
1.2 |
1.91E-01 |
2.15E-02 |
2.48E-02 |
|
8/19/98 |
3.0 |
1.69E-01 |
1.89E-02 |
1.59E-02 |
|
8/19/98 |
3.0 |
1.78E-01 |
2.11E-02 |
2.52E-02 |
|
8/19/98 |
3.7 |
dNA |
NA |
NA |
|
238U |
235U |
234U |
|
Collection Date |
Water Depth
(m) |
Activity
Concentration
(mBq g-1) |
SD
(mBq g-1) |
MDC
(mBq g-1) |
Activity
Concentration
(mBq g-1) |
SD
(mBq g-1) |
MDC
(mBq g-1) |
Activity
Concentration
(mBq g-1) |
SD
(mBq g-1) |
MDC
(mBq g-1) |
|
3/17/98 |
0.6 |
2.57E+01 |
1.11E+00 |
2.70E-02 |
1.35E+00 |
1.22E-01 |
3.26E-02 |
3.64E+01 |
1.55E+00 |
2.55E-02 |
|
3/17/98 |
0.6 |
2.83E+01 |
1.26E+00 |
2.92E-02 |
1.45E+00 |
1.30E-01 |
3.00E-02 |
3.96E+01 |
1.70E+00 |
2.78E-02 |
|
3/19/98 |
2.4 |
2.49E+01 |
1.11E+00 |
2.81E-02 |
1.20E+00 |
1.18E-01 |
3.33E-02 |
3.27E+01 |
1.41E+00 |
2.66E-02 |
|
3/19/98 |
2.7 |
3.11E+01 |
1.41E+00 |
3.48E-02 |
1.54E+00 |
1.48E-01 |
3.70E-02 |
4.58E+01 |
2.04E+00 |
3.59E-02 |
|
8/19/98 |
1.2 |
3.36E+01 |
1.78E+00 |
3.07E-02 |
1.68E+00 |
1.15E-01 |
3.63E-02 |
5.00E+01 |
2.63E+00 |
4.44E-02 |
|
8/19/98 |
3.0 |
3.16E+01 |
1.70E+00 |
3.22E-02 |
1.70E+00 |
1.33E-01 |
3.52E-02 |
5.10E+01 |
2.70E+00 |
3.70E-02 |
|
8/19/98 |
3.0 |
2.78E+01 |
1.48E+00 |
3.48E-02 |
1.56E+00 |
1.22E-01 |
4.81E-02 |
4.38E+01 |
2.33E+00 |
5.55E-02 |
|
8/19/98 |
3.7 |
3.29E+01 |
1.74E+00 |
4.22E-02 |
1.58E+00 |
1.26E-01 |
5.18E-02 |
5.00E+01 |
2.63E+00 |
6.66E-02 |
|
232Th |
230Th |
228Th |
|
Collection Date |
Water Depth
(m) |
Activity
Concentration
(mBq g-1) |
SD
(mBq g-1) |
MDC
(mBq g-1) |
Activity
Concentration
(mBq g-1) |
SD
(mBq g-1) |
MDC
(mBq g-1) |
Activity
Concentration
(mBq g-1) |
SD
(mBq g-1) |
MDC
(mBq g-1) |
|
3/17/98 |
0.6 |
1.81E+01 |
1.04E+00 |
2.81E-01 |
1.96E+01 |
3.10E+01 |
1.18E+00 |
1.81E+01 |
1.07E+00 |
8.51E-01 |
|
3/17/98 |
0.6 |
2.43E+01 |
2.78E+00 |
1.44E+00 |
2.67E+01 |
8.50E+01 |
3.52E+00 |
2.74E+01 |
3.11E+00 |
2.96E+00 |
|
3/19/98 |
2.4 |
1.97E+01 |
1.37E+00 |
4.07E-01 |
2.02E+01 |
4.10E+01 |
1.59E+00 |
1.83E+01 |
1.37E+00 |
1.22E+00 |
|
3/19/98 |
2.7 |
2.74E+01 |
1.81E+00 |
6.66E-01 |
2.86E+01 |
5.30E+01 |
1.85E+00 |
2.46E+01 |
1.81E+00 |
2.00E+00 |
|
8/19/98 |
1.2 |
2.06E+01 |
1.30E+00 |
4.07E-01 |
2.12E+01 |
3.80E+01 |
1.85E+00 |
1.42E+01 |
1.15E+00 |
1.85E+00 |
|
8/19/98 |
3.0 |
2.06E+01 |
1.15E+00 |
4.44E-01 |
2.27E+01 |
3.50E+01 |
1.48E+00 |
1.84E+01 |
1.11E+00 |
1.37E+00 |
|
8/19/98 |
3.0 |
9.17E+01 |
3.63E+00 |
4.44E-01 |
3.25E+01 |
4.30E+01 |
1.44E+00 |
3.94E+01 |
1.85E+00 |
1.85E+00 |
|
8/19/98 |
3.7 |
2.71E+01 |
1.33E+00 |
4.07E-01 |
3.06E+01 |
4.10E+01 |
1.44E+00 |
2.63E+01 |
1.37E+00 |
1.33E+00 |
aActivity concentrations of all radionuclides were measured using alpha spectroscopy
bSD=count standard deviation
cMDC = minimum detectable concentration
dNA = sample was not analyzed for target analyte or analysis failed
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