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Published online 20 November 2007
Published in Vadose Zone J 6:1042-1049 (2007)
DOI: 10.2136/vzj2006.0153
© 2007 Soil Science Society of America
677 S. Segoe Rd., Madison, WI 53711 USA
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Inductively Coupled Plasma/Mass Spectrometric Isotopic Determination of Nuclear Wastes Sources Associated with Hanford Tank Leaks

John C. Evans*, P. Evan Dresel and Orville T. Farmer, III

Pacific Northwest National Lab., P.O. Box 999, Richland, WA 99352

Figure 1
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  		FIG. 1. Location of the S-SX tank farms, Hanford Site in Washington State.

 

Figure 2
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  		FIG. 2. Cross-section beneath the SX-108 high-level waste tank showing the depths of samples collected from the slant borehole.

 

Figure 3
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  		FIG. 3. 137Cs sediment concentrations (Serne et al., 2002b) and 99Tc water extract concentrations (this study) in the SX-108 slant borehole.

 

Figure 4
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  		FIG. 4. Comparison of total Mo measured by inductively coupled plasma–optical emission spectrometry (bottom axis) in water extracts from SX-108 slant borehole (Serne et al., 2002b) with this study's fission derived 100Mo measured by inductively coupled plasma–mass spectrometry (top axis). The other three fission derived isotopes of Mo as 94, 97, and 98 amu show a similar pattern. (amu, atomic mass unit; BGS, below ground surface.)

 

Figure 5
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  		FIG. 5. Chromium and Mo distribution in water extracts from SX-108 slant borehole (Serne et al. 2002b). (BGS, below ground surface.)

 

Figure 6
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  		FIG. 6. 99Tc (this study) and Cr (Serne et al., 2002b) in distributions in water extracts from SX-108 slant borehole. (BGS, below ground surface.)

 

Figure 7
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  		FIG. 7. Chromium distribution in water and acid extracts from SX-108 slant borehole (Serne et al., 2002b). (BGS, below ground surface.)

 

Figure 8
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  		FIG. 8. NO3 (Serne et al., 2002b) and 99Tc (this study) distributions in water extracts from SX-108 slant borehole. (BGS, below ground surface.)

 




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