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Mendeley readers
Attention Score in Context
| Title |
Molecular Resolution and Fragmentation of Fulvic Acid by Electrospray Ionization/Multistage Tandem Mass Spectrometry
|
|---|---|
| Published in |
Analytical Chemistry, March 2001
|
| DOI | 10.1021/ac0012593 |
| Pubmed ID | |
| Authors |
Jerry A. Leenheer, Colleen E. Rostad, Paul M. Gates, Edward T. Furlong, Imma Ferrer |
| Abstract |
Molecular weight distributions of fulvic acid from the Suwannee River, Georgia, were investigated by electrospray ionization/quadrupole mass spectrometry (ESI/ QMS), and fragmentation pathways of specific fulvic acid masses were investigated by electrospray ionization/ion trap multistage tandem mass spectrometry (ESI/MST/ MS). ESI/QMS studies of the free acid form of low molecular weight poly(carboxylic acid) standards in 75% methanol/25% water mobile phase found that negative ion detection gave the optimum generation of parent ions that can be used for molecular weight determinations. However, experiments with poly(acrylic acid) mixtures and specific high molecular weight standards found multiply charged negative ions that gave a low bias to molecular mass distributions. The number of negative charges on a molecule is dependent on the distance between charges. ESI/MST/MS of model compounds found characteristic water loss from alcohol dehydration and anhydride formation, as well as CO2 loss from decarboxylation, and CO loss from ester structures. Application of these fragmentation pathways to specific masses of fulvic acid isolated and fragmented by ESI/MST/MS is indicative of specific structures that can serve as a basis for future structural confirmation after these hypothesized structures are synthesized. |
Mendeley readers
The data shown below were compiled from readership statistics for 113 Mendeley readers of this research output. Click here to see the associated Mendeley record.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| United Kingdom | 2 | 2% |
| United States | 2 | 2% |
| Germany | 2 | 2% |
| India | 1 | <1% |
| Unknown | 106 | 94% |
Demographic breakdown
| Readers by professional status | Count | As % |
|---|---|---|
| Student > Ph. D. Student | 29 | 26% |
| Researcher | 20 | 18% |
| Student > Master | 13 | 12% |
| Professor > Associate Professor | 10 | 9% |
| Professor | 9 | 8% |
| Other | 14 | 12% |
| Unknown | 18 | 16% |
| Readers by discipline | Count | As % |
|---|---|---|
| Chemistry | 45 | 40% |
| Environmental Science | 17 | 15% |
| Agricultural and Biological Sciences | 12 | 11% |
| Earth and Planetary Sciences | 6 | 5% |
| Engineering | 4 | 4% |
| Other | 5 | 4% |
| Unknown | 24 | 21% |
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 23 October 2018.
All research outputs
#7,472,947
of 22,846,662 outputs
Outputs from Analytical Chemistry
#8,578
of 26,482 outputs
Outputs of similar age
#12,963
of 40,022 outputs
Outputs of similar age from Analytical Chemistry
#53
of 125 outputs
Altmetric has tracked 22,846,662 research outputs across all sources so far. This one is in the 44th percentile – i.e., 44% of other outputs scored the same or lower than it.
So far Altmetric has tracked 26,482 research outputs from this source. They receive a mean Attention Score of 4.7. This one is in the 35th percentile – i.e., 35% 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 40,022 tracked outputs that were published within six weeks on either side of this one in any source. This one is in the 10th percentile – i.e., 10% of its contemporaries scored the same or lower than it.
We're also able to compare this research output to 125 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.