↓ Skip to main content

Effects of Iron on Optical Properties of Dissolved Organic Matter

Overview of attention for article published in Environmental Science & Technology, August 2014
Altmetric Badge

Mentioned by

twitter
1 tweeter

Citations

dimensions_citation
94 Dimensions

Readers on

mendeley
157 Mendeley
You are seeing a free-to-access but limited selection of the activity Altmetric has collected about this research output. Click here to find out more.
Title
Effects of Iron on Optical Properties of Dissolved Organic Matter
Published in
Environmental Science & Technology, August 2014
DOI 10.1021/es502670r
Pubmed ID
Authors

Brett A. Poulin, Joseph N. Ryan, George R. Aiken

Abstract

Iron is a source of interference in the spectroscopic analysis of dissolved organic matter (DOM); however, its effects on commonly employed ultraviolet and visible (UV-vis) light adsorption and fluorescence measurements are poorly defined. Here, we describe the effects of iron(II) and iron(III) on the UV-vis absorption and fluorescence of solutions containing two DOM fractions and two surface water samples. In each case, regardless of DOM composition, UV-vis absorption increased linearly with increasing iron(III). Correction factors were derived using iron(III) absorption coefficients determined at wavelengths commonly used to characterize DOM. Iron(III) addition increased specific UV absorbances (SUVA) and decreased the absorption ratios (E2:E3) and spectral slope ratios (SR) of DOM samples. Both iron(II) and iron(III) quenched DOM fluorescence at pH 6.7. The degree and region of fluorescence quenching varied with the iron:DOC concentration ratio, DOM composition, and pH. Regions of the fluorescence spectra associated with greater DOM conjugation were more susceptible to iron quenching, and DOM fluorescence indices were sensitive to the presence of both forms of iron. Analyses of the excitation-emission matrices using a 7- and 13-component parallel factor analysis (PARAFAC) model showed low PARAFAC sensitivity to iron addition.

Twitter Demographics

The data shown below were collected from the profile of 1 tweeter who shared this research output. Click here to find out more about how the information was compiled.

Mendeley readers

The data shown below were compiled from readership statistics for 157 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
India 1 <1%
Japan 1 <1%
United States 1 <1%
Belgium 1 <1%
Sweden 1 <1%
Canada 1 <1%
Unknown 151 96%

Demographic breakdown

Readers by professional status Count As %
Student > Ph. D. Student 49 31%
Student > Master 31 20%
Researcher 27 17%
Student > Bachelor 13 8%
Unspecified 10 6%
Other 27 17%
Readers by discipline Count As %
Environmental Science 61 39%
Unspecified 28 18%
Earth and Planetary Sciences 25 16%
Chemistry 17 11%
Agricultural and Biological Sciences 15 10%
Other 11 7%

Attention Score in Context

This research output has an Altmetric Attention Score of 1. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 13 August 2014.
All research outputs
#3,053,633
of 4,507,652 outputs
Outputs from Environmental Science & Technology
#3,628
of 4,705 outputs
Outputs of similar age
#73,589
of 113,497 outputs
Outputs of similar age from Environmental Science & Technology
#177
of 222 outputs
Altmetric has tracked 4,507,652 research outputs across all sources so far. This one is in the 20th percentile – i.e., 20% of other outputs scored the same or lower than it.
So far Altmetric has tracked 4,705 research outputs from this source. They typically receive more attention than average, with a mean Attention Score of 8.5. This one is in the 12th percentile – i.e., 12% of its peers scored the same or lower than it.
Older research outputs will score higher simply because they've had more time to accumulate mentions. To account for age we can compare this Altmetric Attention Score to the 113,497 tracked outputs that were published within six weeks on either side of this one in any source. This one is in the 25th percentile – i.e., 25% of its contemporaries scored the same or lower than it.
We're also able to compare this research output to 222 others from the same source and published within six weeks on either side of this one. This one is in the 13th percentile – i.e., 13% of its contemporaries scored the same or lower than it.