Calcium Carbonate Co-Precipitation with Phosphorous: Developing a Novel Technique for Reconstructing Historic Lake Trophic States
Location
Logan Golf & Country Club, Logan, UT
Start Date
3-26-2019 5:00 PM
End Date
3-26-2019 7:00 PM
Description
Anthropogenic phosphorus pollution is the leading cause of the eutrophication and degradation of water bodies. Managing these systems requires an accurate understanding of historical conditions. However, the vertical mobility of phosphorus (P) in lake sediments has prevented accurate determinations of historical loading. Because P has a high affinity for Ca, and will co-precipitate with CaCO3 in lake systems, we hypothesize the CaCO3-P fraction of sediments can accurately reconstruct historical ambient water column concentrations. We precipitated CaCO3 in a range of P solutions (0,5,25,50,100,250 ug/L) and found the precipitates had P concentrations that closely match the solution from which they formed (R2=0.9959, P=
Calcium Carbonate Co-Precipitation with Phosphorous: Developing a Novel Technique for Reconstructing Historic Lake Trophic States
Logan Golf & Country Club, Logan, UT
Anthropogenic phosphorus pollution is the leading cause of the eutrophication and degradation of water bodies. Managing these systems requires an accurate understanding of historical conditions. However, the vertical mobility of phosphorus (P) in lake sediments has prevented accurate determinations of historical loading. Because P has a high affinity for Ca, and will co-precipitate with CaCO3 in lake systems, we hypothesize the CaCO3-P fraction of sediments can accurately reconstruct historical ambient water column concentrations. We precipitated CaCO3 in a range of P solutions (0,5,25,50,100,250 ug/L) and found the precipitates had P concentrations that closely match the solution from which they formed (R2=0.9959, P=