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Mendeley readers
Attention Score in Context
| Title |
Binding of Mercury(II) to Dissolved Organic Matter: The Role of the Mercury-to-DOM Concentration Ratio
|
|---|---|
| Published in |
Environmental Science & Technology, July 2002
|
| DOI | 10.1021/es025699i |
| Pubmed ID | |
| Authors |
Markus Haitzer, George R. Aiken, Joseph N. Ryan |
| Abstract |
The binding of Hg(II) to dissolved organic matter (DOM; hydrophobic acids isolated from the Florida Everglades by XAD-8 resin) was measured at a wide range of Hg-to-DOM concentration ratios using an equilibrium dialysis ligand exchange method. Conditional distribution coefficients (K(DOM)') determined by this method were strongly affected by the Hg/DOM concentration ratio. At Hg/DOM ratios below approximately 1 microg of Hg/mg of DOM, we observed very strong interactions (K(DOM)' = 10(23.2+/-1.0) L kg(-1) at pH = 7.0 and I = 0.1), indicative of mercury-thiol bonds. Hg/DOM ratios above approximately 10 microg of Hg/mg of DOM, as used in most studies that have determined Hg-DOM binding constants, gave much lower K(DOM)' values (10(10.7+/-1.0) L kg(-1) at pH = 4.9-5.6 and I = 0.1), consistent with Hg binding mainly to oxygen functional groups. These results suggest that the binding of Hg to DOM under natural conditions (very low Hg/DOM ratios) is controlled by a small fraction of DOM molecules containing a reactive thiol functional group. Therefore, Hg/DOM distribution coefficients used for modeling the biogeochemical behavior of Hg in natural systems need to be determined at low Hg/DOM ratios. |
Mendeley readers
The data shown below were compiled from readership statistics for 199 Mendeley readers of this research output. Click here to see the associated Mendeley record.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| United States | 3 | 2% |
| Canada | 2 | 1% |
| Brazil | 1 | <1% |
| Argentina | 1 | <1% |
| Portugal | 1 | <1% |
| Unknown | 191 | 96% |
Demographic breakdown
| Readers by professional status | Count | As % |
|---|---|---|
| Student > Ph. D. Student | 51 | 26% |
| Researcher | 35 | 18% |
| Student > Master | 23 | 12% |
| Student > Doctoral Student | 16 | 8% |
| Student > Bachelor | 11 | 6% |
| Other | 29 | 15% |
| Unknown | 34 | 17% |
| Readers by discipline | Count | As % |
|---|---|---|
| Environmental Science | 64 | 32% |
| Chemistry | 27 | 14% |
| Agricultural and Biological Sciences | 20 | 10% |
| Earth and Planetary Sciences | 17 | 9% |
| Engineering | 15 | 8% |
| Other | 10 | 5% |
| Unknown | 46 | 23% |
Attention Score in Context
This research output has an Altmetric Attention Score of 3. 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 September 2022.
All research outputs
#8,535,684
of 25,377,790 outputs
Outputs from Environmental Science & Technology
#9,522
of 20,675 outputs
Outputs of similar age
#13,191
of 37,264 outputs
Outputs of similar age from Environmental Science & Technology
#28
of 78 outputs
Altmetric has tracked 25,377,790 research outputs across all sources so far. This one is in the 43rd percentile – i.e., 43% of other outputs scored the same or lower than it.
So far Altmetric has tracked 20,675 research outputs from this source. They typically receive a lot more attention than average, with a mean Attention Score of 17.8. This one is in the 29th percentile – i.e., 29% 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 37,264 tracked outputs that were published within six weeks on either side of this one in any source. This one is in the 11th percentile – i.e., 11% of its contemporaries scored the same or lower than it.
We're also able to compare this research output to 78 others from the same source and published within six weeks on either side of this one. This one is in the 1st percentile – i.e., 1% of its contemporaries scored the same or lower than it.