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| Titel: |
The effects of Tri- and dichloroacetic acids on the oxygen consumption of the dragonfly nymph Aeschna Umbrosa |
| Auteur: |
Dominguez, Teresa M. Calabrese, Edward J. Kostecki, Paul T. Coler, Robert A. |
| Verschenen in: |
Journal of environmental science and health. Part A, Toxic/hazardous substances & environmental engineering |
| Paginering: | Jaargang 23 (1988) nr. 3 pagina's 251-271 |
| Jaar: |
1988-04 |
| Inhoud: |
The discovery of trihalomethanes in drinking water and the subsequent establishment of limits by the U.S. EPA aroused concern over the potential toxicological effects of related by-products of water chlorination. Two recently characterized haloforms, trichloroacetic acid (TCAA) and dichloroacetic acid (DCAA), have been reported to occur in drinking water at levels comparable to the trihalomethanes.1 As a consequence, this research examined the effects of these two chemicals on the oxygen consumption rate of the dragonfly nymph Aeschna umbrosa. Nymphs were exposed for 8 hours to one of three haloform preparations—TCAA, DCAA or combined—in a gravity feed flow-through testing apparatus. Four treatment levels (1, 10, 100 and 1000 μg/l) and an unexposed control were tested. Results indicated a significant elevation in oxygen consumption of nymphs exposed to 100 and 1000 μg/l of all three haloform preparations (p < 0.001) but not at lower concentrations. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 8 van 8 gevonden artikelen
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