7759

• UCREFRP Catalog Number: 7759
• Author: Beyers, D. W. and M. S. Farmer.
• Title: Effects of Copper and Zinc on Olfaction of Colorado Squawfish as Estimated by Behavioral Assay.
• USFW Year: 1994.
• USFW - Doc Type: \
• Copyright Material: NO

•
Table 3. Predicted 1-h, 24-h, and 96-h average concentrations of
copper and zinc for protection of freshwater aquatic organisms
based on USEPA ambient water quality criteria (WQC) and hardness
of dilution waters.
Hardness WQC EC1
Exposure (mg/L) (µg/L) (µg/L)
24-h exposure
copper 113 20a 0.888 (0.155, 5.12)
zinc 120 47b 135 (16.1, 1150)
96-h exposure
copper 116 13° 15.0 (5.69, 43.6)
zinc 117 370° NE
al-h average concentration, 24-h average estimate not available.
b24-h average concentration.
X96-h average concentration.
EC1 = toxicant concentrations and their 95% confidence limits (in
parentheses) estimated to inhibit olfaction in 1% of the test
organisms.
NE = no effect detected from exposure.
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