Metal concentrations in Maryland`s shellfish: 1970s--1990s
Abstract
Maryland has been monitoring arsenic, cadmium, chromium, copper, lead, mercury and zinc in bivalve shellfish from state waters since the 1960s. The primary bivalve species monitored in Maryland waters are the oyster, Crassostrea virginica and the softshell clam, Mya arenaria. These data have been evaluated for temporal trends. In order to insure that temporal evaluations be based upon data produced using comparable analytical methods, the time period evaluated is not the same for all analytes. For example, while most evaluations are for the period 1974 through 1994, arsenic data were evaluated for the period 1980 through 1994. Data for oyster tissue indicate declines in levels of mercury, cadmium, arsenic, copper and zinc on the order of 70--90%. The major portion of these reductions occurred prior to 1985. These declines are evident from data collected from Maryland`s lower eastern shore, a relatively remote area, as well as from waters closer to larger population centers. Past detection levels for lead and chromium were insufficiently low to detect temporal changes.
- Authors:
-
- Maryland Dept. of the Environment, Baltimore, MD (United States)
- Publication Date:
- OSTI Identifier:
- 390162
- Report Number(s):
- CONF-9511137-
ISBN 1-880611-03-1; TRN: IM9646%%447
- Resource Type:
- Conference
- Resource Relation:
- Conference: 2. Society of Environmental Toxicology and Chemistry (SETAC) world conference, Vancouver (Canada), 5-9 Nov 1995; Other Information: PBD: 1995; Related Information: Is Part Of Second SETAC world congress (16. annual meeting): Abstract book. Global environmental protection: Science, politics, and common sense; PB: 378 p.
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 54 ENVIRONMENTAL SCIENCES; 56 BIOLOGY AND MEDICINE, APPLIED STUDIES; MARYLAND; WATER POLLUTION; SURFACE WATERS; BIOLOGICAL INDICATORS; ARSENIC; BIOLOGICAL ACCUMULATION; CADMIUM; CHROMIUM; COPPER; LEAD; MERCURY; ZINC; OYSTERS; SENSITIVITY; CLAMS; ECOLOGICAL CONCENTRATION
Citation Formats
Murphy, D L. Metal concentrations in Maryland`s shellfish: 1970s--1990s. United States: N. p., 1995.
Web.
Murphy, D L. Metal concentrations in Maryland`s shellfish: 1970s--1990s. United States.
Murphy, D L. 1995.
"Metal concentrations in Maryland`s shellfish: 1970s--1990s". United States.
@article{osti_390162,
title = {Metal concentrations in Maryland`s shellfish: 1970s--1990s},
author = {Murphy, D L},
abstractNote = {Maryland has been monitoring arsenic, cadmium, chromium, copper, lead, mercury and zinc in bivalve shellfish from state waters since the 1960s. The primary bivalve species monitored in Maryland waters are the oyster, Crassostrea virginica and the softshell clam, Mya arenaria. These data have been evaluated for temporal trends. In order to insure that temporal evaluations be based upon data produced using comparable analytical methods, the time period evaluated is not the same for all analytes. For example, while most evaluations are for the period 1974 through 1994, arsenic data were evaluated for the period 1980 through 1994. Data for oyster tissue indicate declines in levels of mercury, cadmium, arsenic, copper and zinc on the order of 70--90%. The major portion of these reductions occurred prior to 1985. These declines are evident from data collected from Maryland`s lower eastern shore, a relatively remote area, as well as from waters closer to larger population centers. Past detection levels for lead and chromium were insufficiently low to detect temporal changes.},
doi = {},
url = {https://www.osti.gov/biblio/390162},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Sun Dec 31 00:00:00 EST 1995},
month = {Sun Dec 31 00:00:00 EST 1995}
}