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Relative Movement of Bromide and Nitrate Through Soils
Author(s) -
Smith S. J.,
Davis R. J.
Publication year - 1974
Publication title -
journal of environmental quality
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.888
H-Index - 171
eISSN - 1537-2537
pISSN - 0047-2425
DOI - 10.2134/jeq1974.00472425000300020014x
Subject(s) - nitrate , soil water , bromide , subsoil , chemistry , sorption , environmental chemistry , soil science , inorganic chemistry , environmental science , adsorption , organic chemistry
Abstract Miscible displacement experiments were conducted with eight different surface soils (0–15 cm depth) and their associated subsoils (61–76 cm depth). Results indicate that the movement of bromide relative to that of nitrate (0.005 N salts) is identical in subsoils but variable in surface soils. Differences in relative movement of the two anions may be attributed to microbial activity involving nitrate. With the exception of 5% anion sorption in a Greenville subsoil, anion exclusion values ranged from 5 to 39%, indicating the anions were moving 1.05 to 1.64 times as fast as they would if they had been uniformly associated with all the soil water. The results support the view that bromide has utility for following the potential path of nitrate movement through soils.