Ebullition rates and mercury concentrations in St. Lawrence river sediments and a benthic invertebrate

Ebullition, the release of gas from anaerobic decomposition in sediments, was recorded in a mercury‐contaminated depositional zone (Zone 1) of the St. Lawrence River Area of Concern in Cornwall, Ontario, Canada. The aim of the present study was to test if this disturbance affected the bioavailabilit...

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Veröffentlicht in:	Environmental toxicology and chemistry 2013-04, Vol.32 (4), p.857-865
Hauptverfasser:	Razavi, N. Roxanna, Ridal, Jeffrey J., de Wit, William, Hickey, M. Brian C., Campbell, Linda M., Hodson, Peter V.
Format:	Artikel
Sprache:	eng
Schlagworte:	Abiotic stress Amphipod Animal and plant ecology Animal, plant and microbial ecology Animals Applied ecology Benthic fauna Bioavailability Biological and medical sciences Crustacea Ecotoxicology, biological effects of pollution Environmental Monitoring Fluvial sediments Fresh water ecosystems Fundamental and applied biological sciences. Psychology Gas General aspects Geologic Sediments - chemistry Invertebrates Invertebrates - metabolism Marine ecology Mercury Mercury - analysis Mercury - metabolism Methane Methylmercury Methylmercury Compounds - analysis Methylmercury Compounds - metabolism Ontario Organic matter Pore water Rivers Rivers - chemistry Sediments Spatial distribution Synecology Water depth Water Pollutants, Chemical - analysis Water Pollutants, Chemical - metabolism
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Zusammenfassung:	Ebullition, the release of gas from anaerobic decomposition in sediments, was recorded in a mercury‐contaminated depositional zone (Zone 1) of the St. Lawrence River Area of Concern in Cornwall, Ontario, Canada. The aim of the present study was to test if this disturbance affected the bioavailability of total mercury (THg) and methylmercury (MeHg) in surficial sediments to a benthic invertebrate (Echinogammarus ischnus). Ebullition rates ranged from
ISSN:	0730-7268 1552-8618
DOI:	10.1002/etc.2118