Evaluation of specific ultraviolet absorbance as an indicator of the chemical composition and reactivity of dissolved organic carbon.

By James L. Weishaar, G. Aiken, B. Bergamaschi, M. Fram, R. Fujii, K. Mopper. Environmental Science and Technology, 2003

4,278 citations recorded by the source corpus.

Subfields: Industrial and Manufacturing Engineering, Oceanography, Water Science and Technology

View Paper: https://www.semanticscholar.org/paper/a26fe03a0a9a5b9108f4fe5485b97832f60fc91f

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In Oceanography

1. B. Pellerin
2. L. Forsström
3. J. Fleck
4. Armando A. H. Vieira
5. T. B. Bittar
6. L. Kaplan
7. B. Downing
8. T. Kraus

Citations in the corpus

• Optical properties of dissolved organic matter (DOM): Effects of biological and photolytic degradation (2016, background): “The specific UV absorbance at 254 nm (SUVA254) has been shown to be strongly correlated with the hydrophobic organic acid fraction of DOM (Spencer et al. 2012) and is a useful proxy for DOM aromatic content (Weishaar et al. 2003) and molecular weight (Chowdhury 2013).”
• Bioavailability of terrestrial organic carbon to lake bacteria: The case of a degrading subarctic permafrost mire complex (2009, neutral): “Spectroscopic analyses, such as specific UVabsorbance and fluorescence, have the potential to provide information about shifts in the chemical character [ Weishaar et al., 2003 ] and precursor material [McKnight et al., 2001] of aquatic DOC.”
• Competition between photochemical and biological degradation of dissolved organic matter from the cyanobacteria Microcystis aeruginosa (2015, methodology): “Despite these declines, SUVA254 values at the end of the bioassays were higher than at day 0 (Fig.”
• Biological lability of streamwater fluorescent dissolved organic matter (2012, methodology): “SUVA254 was calculated following Weishaar et al. (2003), where absorbance readings at 254 nm were divided by the cuvette path length (m) and then divided by the DOC concentration (mg C L21).”
• Seasonal shifts between autochthonous and allochthonous carbon contributions to zooplankton diets in a subarctic lake (2011, background): “radiation (UVR) attenuation in lakes, specific UV absorbance (SUVA) can also provide insights into the chemical composition of carbon and be used as a guide to the relative importance of autochthonous versus allochthonous carbon inputs to a lake (Weishaar et al. 2003; Jaffé et al. 2008).”
• Dissolved black carbon in aquatic ecosystems (2018, background): “CDOM is the optically active, aromatic-rich fraction of DOM (Weishaar et al. 2003).”
• Increasing dominance of terrigenous organic matter in circumpolar freshwaters due to permafrost thaw (2018, neutral): “The specific ultraviolet absorbance at 254 nm (SUVA254) was determined from DOC normalized A254 as an index of aromaticity and the relative proportion of terrestrial vs. algal carbon sources in DOM (Weishaar et al. 2003).”
• Strong linkages between DOM optical properties and main clades of aquatic bacteria (2016, methodology): “…SUVA254 (L mg 21 m21), estimated as the absorption coefficient at 254 nm divided by the DOC concentration, which is a surrogate for DOM aromaticity (Weishaar et al. 2003), (2) Spectral slope coefficients, S (nm21), were calculated using a linear fit of log-linearized absorption coefficients for…”