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Loss of Bromide in a Wetland Tracer Experiment

Department of Civil and Environmental Engineering, Arizona State Univ., Tempe, AZ 85284-5306.

^* Corresponding author (lbaker{at}asu.edu).

ABSTRACT

Bromide recovery during tracer tests conducted in 12 wetland research cells averaged 48%. Loss of water by infiltration, analytical biases, and inadequate measurement period were rejected as causes of low bromide recovery. The nonconservative behavior of bromide was probably caused by plant uptake. Investigators conducting bromide tracer studies in wetlands should recognize that bromide may be not be conservative in wetlands, particularly during periods of rapid plant growth.

S. Whitmer, current address: Coe and Van Loo Consultants, 4550 N. 12th St., Phoenix, AZ 85014-4291.

L. Baker, current address: Baker Environmental Consulting, 1134 E. Vinedo Lane, Tempe, AZ 85287-5306.

R. Wass, current address: 91st Ave. Wastewater Treatment Plant, 5615 S. 91st Ave., Tolleson, AZ 85353.

Received for publication March 6, 2000.

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