A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Use of Daphnia magna to Assess Potentially Contaminated Buildings
Random concrete core samples taken from a loading dock were used in determining the toxicity of concrete to Daphnia magna. The cores were ground to powder and analyzed for volatiles and chemical agents before being subjected to aquatic toxicology studies using Daphnia magna. Particle size, pH, and ion exchange mechanisms were investigated as par of methodology development. No effects were observed in daphnia exposed to concrete concentrations up to 4000 mg/L after the pH was adjusted. It was determined that an ion exchange reaction between sodium bicarbonate and concrete caused the water hardness to drop. Concrete spiked with sodium lauryl sulfate, copper sulfate, and Beta-aminoethylarylthiosulfonate were investigated to determine if concrete would alter the toxicity. The resulting EC50s were 17.2, 1.42, and 17.3 mg/L, respectively. The copper sulfate toxicity was reduced by two orders of magnitude. The changes in sodium lauryl sulfate and Beta-aminoethylarylthiosulfonate were not significant.
Use of Daphnia magna to Assess Potentially Contaminated Buildings
Random concrete core samples taken from a loading dock were used in determining the toxicity of concrete to Daphnia magna. The cores were ground to powder and analyzed for volatiles and chemical agents before being subjected to aquatic toxicology studies using Daphnia magna. Particle size, pH, and ion exchange mechanisms were investigated as par of methodology development. No effects were observed in daphnia exposed to concrete concentrations up to 4000 mg/L after the pH was adjusted. It was determined that an ion exchange reaction between sodium bicarbonate and concrete caused the water hardness to drop. Concrete spiked with sodium lauryl sulfate, copper sulfate, and Beta-aminoethylarylthiosulfonate were investigated to determine if concrete would alter the toxicity. The resulting EC50s were 17.2, 1.42, and 17.3 mg/L, respectively. The copper sulfate toxicity was reduced by two orders of magnitude. The changes in sodium lauryl sulfate and Beta-aminoethylarylthiosulfonate were not significant.
Use of Daphnia magna to Assess Potentially Contaminated Buildings
M. V. Haley (author) / C. W. Kurnas (author)
1992
24 pages
Report
No indication
English
Environmental Health & Safety , Toxicology , Buildings , Concrete , Toxicity , Crustacea , Bicarbonates , Chemicals , Copper , Cores , Exchange reactions , Ion exchange , Particle size , Sodium , Sulfates , Ph factor , Daphnia magna , Environmental monitoring , Concrete toxicity , Water hardness , Aquatic toxicology , Installation restoration
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