Sampling and Measuring Helium Isoptopes and Tritium in Seawater .

Abstract

This document is meant to describe the essential elements of sampling and measuring helium isotopes and tritium in seawater. The methods described are those that have been used in our laboratory, and should not be regarded as the only means of making such measurements. Rather, they are provided as a guide for those interested in evaluating or comparing such techniques with others and for understanding the limits of th e measurements and the resulting data. Other summaries of experimental procedures are available in the literature (Jenkins and Clarke, 1976; Clarke et al., 1976; Jenkins, 1981; Lott and Jenkins, 1984; Bayer et al., 1989; Lott and Jenkins, 1998; Stanley, 2007; Stanley et al, 2009).