Influence of oligomeric silicic and humic acids on aluminum accumulation in a freshwater grazing invertebrate

This study examined the influence of oligomeric silicic acid and humic acid on aluminum in the water column and its accumulation in the freshwater snail Lymnaea stagnalis. Forty-eight hours after addition of Al (500 μg L −1), 83% of the metal was lost from the water column. This loss was reduced by...

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Veröffentlicht in:Ecotoxicology and environmental safety 2002-11, Vol.53 (3), p.382-387
Hauptverfasser: Desouky, M.M., Powell, J.J., Jugdaohsingh, R., White, K.N., McCrohan, C.R.
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container_end_page 387
container_issue 3
container_start_page 382
container_title Ecotoxicology and environmental safety
container_volume 53
creator Desouky, M.M.
Powell, J.J.
Jugdaohsingh, R.
White, K.N.
McCrohan, C.R.
description This study examined the influence of oligomeric silicic acid and humic acid on aluminum in the water column and its accumulation in the freshwater snail Lymnaea stagnalis. Forty-eight hours after addition of Al (500 μg L −1), 83% of the metal was lost from the water column. This loss was reduced by oligomeric silica (20 mg L −1) and by humic acid (10 mg L −1). Aluminum accumulated in the digestive gland and, to a lesser extent, in the remaining soft tissues, and this accumulation was reduced by oligomeric silica. In the presence of humic acid, Al accumulation in the digestive gland was unaffected, though less was accumulated in the remaining tissues. Snails accumulated Si preferentially in the digestive gland and this accumulation was increased in the presence of added Al. Thus, both oligomeric silica and humic acid influence Al bioavailability and Si is upregulated in the digestive gland in the presence of Al.
doi_str_mv 10.1016/S0147-6513(02)00015-5
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Forty-eight hours after addition of Al (500 μg L −1), 83% of the metal was lost from the water column. This loss was reduced by oligomeric silica (20 mg L −1) and by humic acid (10 mg L −1). Aluminum accumulated in the digestive gland and, to a lesser extent, in the remaining soft tissues, and this accumulation was reduced by oligomeric silica. In the presence of humic acid, Al accumulation in the digestive gland was unaffected, though less was accumulated in the remaining tissues. Snails accumulated Si preferentially in the digestive gland and this accumulation was increased in the presence of added Al. 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subjects Aluminum
Aluminum - pharmacokinetics
Animal, plant and microbial ecology
Animals
Applied ecology
Biological and medical sciences
Biological Availability
Drug Interactions
Ecotoxicology, biological effects of pollution
Effects of pollution and side effects of pesticides on protozoa and invertebrates
Fresh water environment
Freshwater
Fundamental and applied biological sciences. Psychology
Grazer
Humic acid
Humic Substances - pharmacology
Lymnaea - physiology
Lymnaea stagnalis
Silicic Acid - pharmacology
Silicon
Snail
Tissue Distribution
Water Pollutants - pharmacokinetics
title Influence of oligomeric silicic and humic acids on aluminum accumulation in a freshwater grazing invertebrate
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