Uses of chloride/bromide ratios in studies of potable water

In natural ground water systems, both chlorine and bromine occur primarily as monovalent anions, chloride and bromide. Although dissolution or precipitation of halite, biological activity in the root zone, anion sorption, and exchange can affect chloride/bromide ratios in some settings, movement of...

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Bibliographic Details
Published in:Ground water 1998-03, Vol.36 (2), p.338-350
Main Authors: Davis, S.N. (University of Arizona, Tucson, AZ.), Whittemore, D.O, Fabryka-Martin, J
Format: Article
Language:English
Subjects:
ALBERTA
AQUIFERS
ARIZONA
BRACKISH WATER
BROMIDES
Case studies
CHLORIDES
Contamination
Dichloropropane
Drinking water
GEOGRAPHICAL VARIATION
Geology
GROUNDWATER
GROUNDWATER POLLUTION
GROUNDWATER TABLE
Hydrology
KANSAS
NEVADA
PROVENANCE
RAIN
ROCK
SALINE WATER
SALINITY
Salt
SEA WATER
SOIL
SURFACE WATER
WATER QUALITY
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Summary:In natural ground water systems, both chlorine and bromine occur primarily as monovalent anions, chloride and bromide. Although dissolution or precipitation of halite, biological activity in the root zone, anion sorption, and exchange can affect chloride/bromide ratios in some settings, movement of the ions in potable ground water is most often conservative. Atmospheric precipitation will generally have mass ratios between 50 and 150; shallow ground water, between 100 and 200; domestic sewage, between 300 and 600; water affected by dissolution of halite, between 1000 and 10,000; and summer runoff from urban streets, between 10 and 100. These, and other distinctive elemental ratios, are useful in the reconstruction of the origin and movement of ground water, as illustrated by case studies investigating sources of salinity in ground water from Alberta, Kansas, and Arizona, and infiltration rates and pathways at Yucca Mountain, Nevada
ISSN:0017-467X
1745-6584
DOI:10.1111/j.1745-6584.1998.tb01099.x