Tritium 3he dating of shallow groundwater www dating coach elaine com

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Tritium 3he dating of shallow groundwater

Stute, “Dating of Shallow Groundwater: Comparison of the Transient Tracers 3H/3He, Chloroflourocarbons, and 85Kr,” Water Resources Research, Vol.

Schlosser, “Age Dating of Ground Water Using Chlorofluorocarbons, Tritium/Helium: 3, and Flow Path Analysis in an Unconfined Aquifer of the New Jersey Coastal Plain,” Water Resources Research, Vol.

The fully automated, computer-controlled manifold system allows analysis of the full suite of noble gases (3He/4He, He, Ne, Ar, Kr, and Xe concentrations), along with low level tritium for reporting of derived quantities that include tritium/helium-3 groundwater age, noble gas recharge temperature, and dissolved excess air concentration.

This system represents a capability for characterizing groundwater recharge conditions by dissolved gas analysis that is unmatched by any other laboratory.

Bosch, “Helium as a Semi-Quantitative Tool for Groundwater Dating in the Range of 104 to 108 Years,” In: Isotopes of Noble Gases as Tracers in Environmental Studies, International Atomic Energy Agency, Vienna, 1992, pp. Clark, “A 3H/3He Study of Groundwater Flow in a Fractured Bedrock Aquifer,” Ground Water, Vol. Zimmek, “Performance and Blank Components of a Mass Spectrometric System for Routine Measurement of Helium Isotopes and Tritium by the 3He in Growth Method,” Sitzungsber der Heidelberger Akademie der Wissenschaften, Mathematisch Naturwissenschaftliche Klasse, Jahrgang Springer Verlag. A slight bias toward older apparent ages, found not to be statistically significant, was noted for the He-dating technique relative to the CFC-dating technique.This result may be caused by enrichment of local air in CFC-Il and CFC-12 from urban and industrial sources in the northeastern United States and minor contamination from sampling equipment.

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