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Evaluating Nitrate Recovery by Ion‐Exchange Resin Bags
Author(s) -
Wyland L. J.,
Jackson L. E.
Publication year - 1993
Publication title -
soil science society of america journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.836
H-Index - 168
eISSN - 1435-0661
pISSN - 0361-5995
DOI - 10.2136/sssaj1993.03615995005700050008x
Subject(s) - lysimeter , ion exchange resin , nitrate , leaching (pedology) , chemistry , ion exchange , environmental science , environmental chemistry , soil water , ion , soil science , organic chemistry
Ion‐exchange resin (IER) bags were tested as traps for leached soil NO − 3 ‐N. In laboratory experiments, IER bags recovered 84.7% of the NO − 3 ‐N from solutions containing 0.09 to 40.74 g NO − 3 ‐N kg −1 resin, but recovery decreased at higher concentrations. In soil columns, NO − 3 ‐N recovery was poor (36.2%) when NO − 3 ‐N moved slowly through the soil profile after a rapid single pulse, but improved (87.1%) when higher flow was sustained. In the field, estimates of leached NO − 3 ‐N using IER bags fell within the range of values estimated from soil cores and suction lysimeters. Advantages of IER bags are attributed to cumulative recovery of NO − 3 ‐N during passive interception of gravitational water flow.