Dual measurement of 13C and 14 isotopic composition to identify biodegradation of fuel hydrocarbons at the LLNL gasoline spill site
- LLNL
Samples of groundwater were collected in the spring of 1996 for 13C and 14C determinations of dissolved inorganic carbon (DIC). A sample of the FHC collected during steam injection was also analyzed. Groundwater was collected after appropriate pumping times in I-CHEM® 125ml amber glass bottles fitted with l/8 inch teflon-coated rubber septa inserted into threaded caps. Bottles were filled leaving approximately a two inch head space, treated with 4 drops of saturated HgC12 solution, and stored upside- down refrigerated until analyses. Analyses were performed within 48 hours of collection. Two duplicates were collected using evacuated glass cylinders equipped with greased stopcocks and a l/4 inch rubber septa plug. Results of these duplicate samples were identical to those collected in the septa bottles (see Table 1).
- Research Organization:
- Lawrence Livermore National Laboratory, Livermore, CA
- Sponsoring Organization:
- USDOE Office of Defense Programs (DP)
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 2890
- Report Number(s):
- UCRL-ID-132471; YN0100000; 98-ERD-046; ON: DE00002890
- Country of Publication:
- United States
- Language:
- English
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