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Insight into Acid–Base Nucleation Experiments by Comparison of the Chemical Composition of Positive, Negative, and Neutral Clusters

Overview of attention for article published in Environmental Science & Technology, November 2014
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Title
Insight into Acid–Base Nucleation Experiments by Comparison of the Chemical Composition of Positive, Negative, and Neutral Clusters
Published in
Environmental Science & Technology, November 2014
DOI 10.1021/es502380b
Pubmed ID
Authors

Federico Bianchi, Arnaud P. Praplan, Nina Sarnela, Josef Dommen, Andreas Kürten, Ismael K. Ortega, Siegfried Schobesberger, Heikki Junninen, Mario Simon, Jasmin Tröstl, Tuija Jokinen, Mikko Sipilä, Alexey Adamov, Antonio Amorim, Joao Almeida, Martin Breitenlechner, Jonathan Duplissy, Sebastian Ehrhart, Richard C. Flagan, Alessandro Franchin, Jani Hakala, Armin Hansel, Martin Heinritzi, Juha Kangasluoma, Helmi Keskinen, Jaeseok Kim, Jasper Kirkby, Ari Laaksonen, Michael J. Lawler, Katrianne Lehtipalo, Markus Leiminger, Vladimir Makhmutov, Serge Mathot, Antti Onnela, Tuukka Petäjä, Francesco Riccobono, Matti P. Rissanen, Linda Rondo, António Tomé, Annele Virtanen, Yrjö Viisanen, Christina Williamson, Daniela Wimmer, Paul M. Winkler, Penglin Ye, Joachim Curtius, Markku Kulmala, Douglas R. Worsnop, Neil M. Donahue, Urs Baltensperger

Abstract

We investigated the nucleation of sulfuric acid together with two bases (ammonia and dimethylamine), at the CLOUD chamber at CERN. The chemical composition of positive, negative, and neutral clusters was studied using three Atmospheric Pressure interface-Time Of Flight (APi-TOF) mass spectrometers: two were operated in positive and negative mode to detect the chamber ions, while the third was equipped with a nitrate ion chemical ionization source allowing detection of neutral clusters. Taking into account the possible fragmentation that can happen during the charging of the ions or within the first stage of the mass spectrometer, the cluster formation proceeded via essentially one-to-one acid-base addition for all of the clusters, independent of the type of the base. For the positive clusters, the charge is carried by one excess protonated base, while for the negative clusters it is carried by a deprotonated acid; the same is true for the neutral clusters after these have been ionized. During the experiments involving sulfuric acid and dimethylamine, it was possible to study the appearance time for all the clusters (positive, negative, and neutral). It appeared that, after the formation of the clusters containing three molecules of sulfuric acid, the clusters grow at a similar speed, independent of their charge. The growth rate is then probably limited by the arrival rate of sulfuric acid or cluster-cluster collision.

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Mendeley readers

Mendeley readers

The data shown below were compiled from readership statistics for 71 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
Indonesia 1 1%
Finland 1 1%
United States 1 1%
Unknown 68 96%

Demographic breakdown

Readers by professional status Count As %
Researcher 21 30%
Student > Ph. D. Student 16 23%
Professor 4 6%
Professor > Associate Professor 4 6%
Student > Master 4 6%
Other 5 7%
Unknown 17 24%
Readers by discipline Count As %
Environmental Science 15 21%
Chemistry 12 17%
Earth and Planetary Sciences 12 17%
Physics and Astronomy 8 11%
Engineering 2 3%
Other 1 1%
Unknown 21 30%
Attention Score in Context

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 26 March 2015.
All research outputs
#17,286,645
of 25,377,790 outputs
Outputs from Environmental Science & Technology
#16,830
of 20,675 outputs
Outputs of similar age
#226,999
of 369,889 outputs
Outputs of similar age from Environmental Science & Technology
#193
of 268 outputs
Altmetric has tracked 25,377,790 research outputs across all sources so far. This one is in the 21st percentile – i.e., 21% 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 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 369,889 tracked outputs that were published within six weeks on either side of this one in any source. This one is in the 29th percentile – i.e., 29% of its contemporaries scored the same or lower than it.
We're also able to compare this research output to 268 others from the same source and published within six weeks on either side of this one. This one is in the 20th percentile – i.e., 20% of its contemporaries scored the same or lower than it.