New Zealand Journal of Marine and Freshwater Research abstracts
Trace metal levels in fish from the Manukau Harbour, Auckland, New Zealand, related to a water pollution incident (Note)
ROBERT V. WINCHESTER
Chemistry Division
Department of Scientific and Industrial Research
P. O. Box 2224, Auckland, New Zealand
Abstract
Concentrations of As, Cd, Co, Cr, Cu, Mn, NiÑ Pb, Sn, and Zn in the heads, gut, and flesh of fish, and in oysters, which apparently died because of a pollution incident in Auckland's Manukau Harbour, were compared with concentrations in fish caught in the same area several days later. Most elements were present only at low levels; however, Cu in the gut of both sets of samples was 33-94 mg kg"
1 (fresh weight), Zn 35-104 mg kg"
1, Mn 12-83 mg kg
1, and Ni up to 34 mg kg-
1. Oyster analyses were within normal ranges. Because of the small number of samples, detailed statistical analysis was not possible but results suggested that variations in metal levels between different parts of the fish and between species were greater than those between affected and control fish, making it unlikely that the fish were killed by a spillage of any of these metals. The cause of the deaths is now thought to have been oxygen deprivation.
Keywords metals; pollution; fish; oysters; Auckland
New Zealand Journal of Marine and Freshwater Research, 1988, Vol. 22: 621-624 Crown copyright 1988Received 2 February 1988, accepted 15 April 1988
PDF file of entire paper: medium quality (288K); (scanned from paper original: notes about this process)
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