EurekaMag.com logo
+ Translate

Tri chlorofluoro methane in ground water a possible tracer and indicator of ground water age


, : Tri chlorofluoro methane in ground water a possible tracer and indicator of ground water age. Water Resources Research 15(3): 546-554

CCl3F, an entirely man-made material, is a detectable component of the atmosphere. Due to its unique atmospheric history, the presence of CCl3F in groundwater is potentially significant in terms of groundwater age. The age relationship stems from the fact that precipitation, exposed to CCl3F in the atmosphere, picks up an amount proportional to the atmospheric CCl3F concentration. If a portion of this water infiltrates into the subsurface to become groundwater, it can be differentiated from older groundwater (that infiltrated prior to the buildup of CCl3F in the atmosphere) on the basis of its CCl3F content. To evaluate the temporal significance of CCl3F in groundwater, preliminary investigations were conducted in 3 areas where the hydrology was well understood and where 3H measurements were made in the past. They were the Wharton tract of southern New Jersey, Hot Springs National Park in Hot Springs, Arkansas and the Edwards aquifer of south central Texas [USA]. The CCl3F data and the hydrologic controls agreed. The Texas study revealed a series of anomalous CCl3F concentrations (up to 35 .times. 10-9 g CCl3F/l H2O) that were too high to be of atmospheric origin. The anomalous points occurred in a line extending from the northwest corner of San Antonio for a distance of 74 km northeast along the Balcones fault zone and presumably represent the migration of CCl3F from a point source indicating the potential of this and similar compounds as hydrologic tracers.

(PDF 0-2 workdays service)

Accession: 006839911

Submit PDF Full Text: Here


Submit PDF Full Text

No spam - Every submission is manually reviewed

Due to poor quality, we do not accept files from Researchgate

Submitted PDF Full Texts will always be free for everyone
(We only charge for PDFs that we need to acquire)

Select a PDF file:
Close
Close

Related references

Ausburn Mark P.; Brown Anthony, 1994: The use of geophysics, tracer studies and ground water flow modeling in the design of a soil vapor extraction and ground water remediation system at a gasoline contaminated site; a case study. Abstracts with Programs Geological Society of America: , Pages 506. 1994.

Lesney Lori L.; Wilson Timothy P., 1990: Spatial variation in ground water chemistry as an indicator of heterogeneity in ground water flow in the Cuyahoga River basin, northeastern Ohio. Abstracts with Programs - Geological Society of America 22(7): 61

Vroblesky, D.-A.L.rah, M.-M.O.iveros, J., P., 1995: Ground-water, surface-water, and bottom-sediment contamination in the O-field area, Aberdeen Proving Ground, Maryland, and the possible effects of selected remedial actions on ground water

Lorah, M.-M.C.ark, J., S., 1996: Contamination of ground water, surface water, and soil, and evaluation of selected ground-water pumping alternatives in the Canal Creek area of Aberdeen Proving Ground, Maryland

Williams, J.-Frank; Ranzau, C.E., 1987: Ground-water withdrawals and changes in ground-water levels, ground-water quality, and land-surface subsidence in the Houston District, Texas 1980-84

Geyh M.A.; Kunzl R., 1981: Methane in ground water and its effect on carbon 14 ground water dating. The methane content of 123 representative groundwater samples with 14C ages exceeding 20,000 yr B.P. collected in West Germany was determined. Methane only rarely affects 14C groundwater dating. A correction which is necessary when only traces of...

Lehnardt F.; Brechtel H.M., 1985: Depth of ground-water depletion and ground-water storage in forest soils with lowered ground-water levels in the Hessian Marsh. Zeitschrift fuer Kulturtechnik und Flurbereinigung 26(3): 138-149

Driscoll Fletcher G., 1993: Ground-water cleanup vs. ground-water protection; where should the $$$ go? Perspective 6, Clarifying the scientist's role in the ground-water remediation process. GSA Today 3(9): 231-233

Scharf J.H., 1975: Nova acta leopoldina vol 38 no 6 ground water and vegetational structures ground water course coincidence method and variability diagram in the contest of ecological investigations on vegetational units affected by ground water. Nova Acta Leopoldina Supplementum 172, 1973

Anonymous, 1977: Increased use of ground-water resources in arid and semi-arid countries; artificial recharge of ground water and development of ground water in hard rocks. Aqua: Pages 126-127. 1977.