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Title: Development and evaluation of consensus-based sediment effect concentrations for polychlorinated biphenyls

Abstract

Sediment-quality guidelines (SQGs) have been published for polychlorinated biphenyls (PCBs) using both empirical and theoretical approaches. Empirically based guidelines have been developed using the screening-level concentration, effects range, effects level, and apparent effects threshold approaches. Theoretically based guidelines have been developed using the equilibrium-partitioning approach. Empirically-based guidelines were classified into three general categories, in accordance with their original narrative intents, and used to develop three consensus-based sediment effect concentrations (SECs) for total PCBs (tPCBs), including a threshold effect concentration, a midrange effect concentration, and an extreme effect concentration. Consensus-based SECs were derived because they estimate the central tendency of the published SQGs and, thus, reconcile the guidance values that have been derived using various approaches. Initially, consensus-based SECs for tPCBs were developed separately for freshwater sediments and for marine and estuarine sediments. Because the respective SECs were statistically similar, the underlying SQGs were subsequently merged and used to formulate more generally applicable SECs. The three consensus-based SECs were then evaluated for reliability using matching sediment chemistry and toxicity data from field studies, dose-response data from spiked-sediment toxicity tests, and SQGs derived from the equilibrium-partitioning approach. The results of this evaluation demonstrated that the consensus-based SECs can accurately predict both themore » presence and absence of toxicity in field-collected sediments. Importantly, the incidence of toxicity increases incrementally with increasing concentrations of tPCBs. Moreover, the consensus-based SECs are comparable to the chronic toxicity thresholds that have been estimated from dose-response data and equilibrium-partitioning models. Therefore, consensus-based SECs provide a unifying synthesis of existing SQGs, reflect causal rather than correlative effects, and accurately predict sediment toxicity in PCB-contaminated sediments.« less

Authors:
; ; ; ; ;
Publication Date:
Research Org.:
MacDonald Environmental Sciences Ltd., Nanaimo, British Columbia (CA)
OSTI Identifier:
20067677
Alternate Identifier(s):
OSTI ID: 20067677
Resource Type:
Journal Article
Journal Name:
Environmental Toxicology and Chemistry
Additional Journal Information:
Journal Volume: 19; Journal Issue: 5; Other Information: PBD: May 2000; Journal ID: ISSN 0730-7268
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; 63 RADIATION, THERMAL, AND OTHER ENVIRONMENTAL POLLUTANT EFFECTS ON LIVING ORGANISMS AND BIOLOGICAL MATERIALS; WATER POLLUTION; SEDIMENTS; POLYCHLORINATED BIPHENYLS; BIOLOGICAL INDICATORS; TOXICITY; ECOLOGICAL CONCENTRATION; RECOMMENDATIONS; BIOLOGICAL AVAILABILITY

Citation Formats

MacDonald, D.D., Dipinto, L.M., Field, J., Ingersoll, C.G., Long, E.R., and Swartz, R.C. Development and evaluation of consensus-based sediment effect concentrations for polychlorinated biphenyls. United States: N. p., 2000. Web. doi:10.1897/1551-5028(2000)019<1403:DAEOCB>2.3.CO;2.
MacDonald, D.D., Dipinto, L.M., Field, J., Ingersoll, C.G., Long, E.R., & Swartz, R.C. Development and evaluation of consensus-based sediment effect concentrations for polychlorinated biphenyls. United States. doi:10.1897/1551-5028(2000)019<1403:DAEOCB>2.3.CO;2.
MacDonald, D.D., Dipinto, L.M., Field, J., Ingersoll, C.G., Long, E.R., and Swartz, R.C. Mon . "Development and evaluation of consensus-based sediment effect concentrations for polychlorinated biphenyls". United States. doi:10.1897/1551-5028(2000)019<1403:DAEOCB>2.3.CO;2.
@article{osti_20067677,
title = {Development and evaluation of consensus-based sediment effect concentrations for polychlorinated biphenyls},
author = {MacDonald, D.D. and Dipinto, L.M. and Field, J. and Ingersoll, C.G. and Long, E.R. and Swartz, R.C.},
abstractNote = {Sediment-quality guidelines (SQGs) have been published for polychlorinated biphenyls (PCBs) using both empirical and theoretical approaches. Empirically based guidelines have been developed using the screening-level concentration, effects range, effects level, and apparent effects threshold approaches. Theoretically based guidelines have been developed using the equilibrium-partitioning approach. Empirically-based guidelines were classified into three general categories, in accordance with their original narrative intents, and used to develop three consensus-based sediment effect concentrations (SECs) for total PCBs (tPCBs), including a threshold effect concentration, a midrange effect concentration, and an extreme effect concentration. Consensus-based SECs were derived because they estimate the central tendency of the published SQGs and, thus, reconcile the guidance values that have been derived using various approaches. Initially, consensus-based SECs for tPCBs were developed separately for freshwater sediments and for marine and estuarine sediments. Because the respective SECs were statistically similar, the underlying SQGs were subsequently merged and used to formulate more generally applicable SECs. The three consensus-based SECs were then evaluated for reliability using matching sediment chemistry and toxicity data from field studies, dose-response data from spiked-sediment toxicity tests, and SQGs derived from the equilibrium-partitioning approach. The results of this evaluation demonstrated that the consensus-based SECs can accurately predict both the presence and absence of toxicity in field-collected sediments. Importantly, the incidence of toxicity increases incrementally with increasing concentrations of tPCBs. Moreover, the consensus-based SECs are comparable to the chronic toxicity thresholds that have been estimated from dose-response data and equilibrium-partitioning models. Therefore, consensus-based SECs provide a unifying synthesis of existing SQGs, reflect causal rather than correlative effects, and accurately predict sediment toxicity in PCB-contaminated sediments.},
doi = {10.1897/1551-5028(2000)019<1403:DAEOCB>2.3.CO;2},
journal = {Environmental Toxicology and Chemistry},
issn = {0730-7268},
number = 5,
volume = 19,
place = {United States},
year = {2000},
month = {5}
}