Seasonal variations in the concentrations of methyl and ethyl nitrate in a shallow freshwater lake

Hughes, Claire, Kettle, Anthony J., Unazi, Godwin A., Weston, Keith, Jones, Matthew R. and Johnson, Martin T. (2010) Seasonal variations in the concentrations of methyl and ethyl nitrate in a shallow freshwater lake. Limnology and Oceanography, 55 (1). pp. 305-314. ISSN 1939-5590

Full text not available from this repository.

Abstract

Between February and October 2007, a time series of alkyl nitrate concentrations in the water column of a shallow freshwater lake, University of East Anglia Broad, located in southeastern England was carried out to determine whether methyl and ethyl nitrate are present in freshwater systems and to improve understanding of alkyl nitrate production mechanisms in aquatic environments. Concentrations ranged from 4.7 (± 0.5) to 53.7 (± 4.36) pmol L-1 methyl nitrate, and 2.5 (± 0.3) to 11.1 (± 0.4) pmol L-1 ethyl nitrate and were within the range of those measured previously in seawater. Peaks in the concentrations of methyl and ethyl nitrate at 4 m were observed in 9 and 6 of the 18 depth profiles measured, respectively. Gradients in concentrations within the hypolimnion suggest that the alkyl nitrates are produced in the bottom waters or sediments, are transported to the lake in groundwater, or both. Colored dissolved organic matter absorbance data suggests that the penetration of ultraviolet light was limited in the lake, so the deep maxima must be due to a non-photochemical alkyl nitrate source.

Item Type:	Article
Uncontrolled Keywords:	sdg 6 - clean water and sanitation ,/dk/atira/pure/sustainabledevelopmentgoals/clean_water_and_sanitation
Faculty \ School:	Faculty of Science > School of Environmental Sciences
UEA Research Groups:	Faculty of Science > Research Groups > Centre for Ocean and Atmospheric Sciences Faculty of Science > Research Groups > Marine and Atmospheric Sciences (former - to 2017) Faculty of Science > Research Groups > Climate, Ocean and Atmospheric Sciences (former - to 2017)
Depositing User:	Rosie Cullington
Date Deposited:	03 Feb 2011 15:48
Last Modified:	23 Oct 2022 01:29
URI:	https://ueaeprints.uea.ac.uk/id/eprint/20314
DOI:	10.4319/lo.2010.55.1.0305

Actions (login required)

View Item