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Analyses of stable isotope ratios of chlorine and oxygen in perchlorate can, in some cases, be used for mapping and source identification of groundwater perchlorate plumes. This is demonstrated here for large, intersecting perchlorate plumes in groundwater from a region having extensive groundwater perchlorate contamination and a large population dependent on groundwater resources. The region contains...
Experiments specifically designed to measure the ratio of the diffusivities of ions dissolved in water were used to determine DLi/DK,D7Li/D6Li,D25Mg/D24Mg,D26Mg/D25Mg,andD37Cl/D35Cl. The measured ratio of the diffusion coefficients for Li and K in water (D Li /D K =0.6) is in good agreement with published data, providing evidence that the experimental design being used resolves the...
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