Current Search: Nitrates (x)
-
-
Title
-
Nitrate partitioning between water and sediments.
-
Creator
-
Kari, Ramanaprasad., Florida Atlantic University, Scarlatos, Panagiotis (Pete) D., College of Engineering and Computer Science, Department of Ocean and Mechanical Engineering
-
Abstract/Description
-
A complete understanding of nitrate partitioning between water and sediments is absolutely necessary to quantify eutrophication and other harmful effects of nitrate addition to a lake. The bottom sediments can act both as source and sink for nitrates. Turbulent conditions induced by wind forces cause sediments to suspend in the water column. During suspension sediments adsorb/release nitrates and other contaminants into the ambient water. This study investigated the effects of temperature,...
Show moreA complete understanding of nitrate partitioning between water and sediments is absolutely necessary to quantify eutrophication and other harmful effects of nitrate addition to a lake. The bottom sediments can act both as source and sink for nitrates. Turbulent conditions induced by wind forces cause sediments to suspend in the water column. During suspension sediments adsorb/release nitrates and other contaminants into the ambient water. This study investigated the effects of temperature, sediment and nitrate concentration on the exchange and partitioning of nitrates between water and sediments. The Langmuir adsorption model was used to quantify the adsorption/desorption processes. A decrease in the value of partition coefficient with increase in sediment concentration was observed. The laboratory experiments revealed that an increase in temperature of the water column favored the adsorption of nitrates by the bottom sediments. The nitrate diffusion coefficients were estimated by utilizing Fick's second law of diffusion. Sediment concentration profiles were strongly dependant on the oscillating-grid induced turbulence effects.
Show less
-
Date Issued
-
1993
-
PURL
-
http://purl.flvc.org/fcla/dt/14946
-
Subject Headings
-
Nitrates, Water--Pollution, Sediments, Suspended
-
Format
-
Document (PDF)
-
-
Title
-
Effects of ammonium nitrate on sensitivity for determinations of copper, iron, and manganese in sea water by atomic absorption spectrometry with pyrolytically coated graphite tubes.
-
Creator
-
Montgomery, John R., Peterson, Gary N., Harbor Branch Oceanographic Institute
-
Date Issued
-
1980
-
PURL
-
http://purl.flvc.org/FCLA/DT/3331817
-
Subject Headings
-
Ammonium nitrate, Seawater--Analysis, Atomic absorption spectroscopy
-
Format
-
Document (PDF)
-
-
Title
-
Uptake and assimilation of 15N-ammonium by the symbiotic sea anemones, Bartholomea annulata and Aiptasia pallida: conservation versus recycling of nitrogen.
-
Creator
-
Lipschultz, F, Cook, Clayton B.
-
Date Issued
-
2001
-
PURL
-
http://purl.flvc.org/FCLA/DT/2783238
-
Subject Headings
-
Dinoflagellates, Nitrification, Nitrates --physiology, Ammonia--metabolism, Coral reef --ecology
-
Format
-
Document (PDF)
-
-
Title
-
Effect of nutrient solution, nitrate-nitrogen concentration, and pH on nitrification rate in perlite medium.
-
Creator
-
Tyson, R. V., Simonne, E. H., Davis, Megan, Lamb, E. M., White, J. M., Treadwell, D. D.
-
Date Issued
-
2007-06
-
PURL
-
http://purl.flvc.org/FCLA/DT/1925705
-
Subject Headings
-
Plants --Nutrition, Hydroponics, Perlite, Plants --Effect of nitrates on, Plants, Effect of nitrogen on, Nitrification
-
Format
-
Document (PDF)
