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Complex mixtures of Pesticides in Midwest U.S. streams indicated by POCIS time-integrating samplers

Overview of attention for article published in Environmental Pollution, January 2017
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2 tweeters

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Title
Complex mixtures of Pesticides in Midwest U.S. streams indicated by POCIS time-integrating samplers
Published in
Environmental Pollution, January 2017
DOI 10.1016/j.envpol.2016.09.085
Pubmed ID
Authors

Peter C. Van Metre, David A. Alvarez, Barbara J. Mahler, Lisa Nowell, Mark Sandstrom, Patrick Moran

Abstract

The Midwest United States is an intensely agricultural region where pesticides in streams pose risks to aquatic biota, but temporal variability in pesticide concentrations makes characterization of their exposure to organisms challenging. To compensate for the effects of temporal variability, we deployed polar organic chemical integrative samplers (POCIS) in 100 small streams across the Midwest for about 5 weeks during summer 2013 and analyzed the extracts for 227 pesticide compounds. Analysis of water samples collected weekly for pesticides during POCIS deployment allowed for comparison of POCIS results with periodic water-sampling results. The median number of pesticides detected in POCIS extracts was 62, and 141 compounds were detected at least once, indicating a high level of pesticide contamination of streams in the region. Sixty-five of the 141 compounds detected were pesticide degradates. Mean water concentrations estimated using published POCIS sampling rates strongly correlated with means of weekly water samples collected concurrently, however, the POCIS-estimated concentrations generally were lower than the measured water concentrations. Summed herbicide concentrations (units of ng/POCIS) were greater at agricultural sites than at urban sites but summed concentrations of insecticides and fungicides were greater at urban sites. Consistent with these differences, summed concentrations of herbicides correlate to percent cultivated crops in the watersheds and summed concentrations of insecticides and fungicides correlate to percent urban land use. With the exception of malathion concentrations at nine sites, POCIS-estimated water concentrations of pesticides were lower than aquatic-life benchmarks. The POCIS provide an alternative approach to traditional water sampling for characterizing chronic exposure to pesticides in streams across the Midwest region.

Twitter Demographics

The data shown below were collected from the profiles of 2 tweeters 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 102 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
Unknown 102 100%

Demographic breakdown

Readers by professional status Count As %
Student > Ph. D. Student 29 28%
Student > Master 16 16%
Student > Doctoral Student 14 14%
Researcher 13 13%
Other 7 7%
Other 9 9%
Unknown 14 14%
Readers by discipline Count As %
Environmental Science 37 36%
Agricultural and Biological Sciences 15 15%
Chemistry 8 8%
Engineering 8 8%
Pharmacology, Toxicology and Pharmaceutical Science 2 2%
Other 7 7%
Unknown 25 25%

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 04 October 2016.
All research outputs
#7,673,450
of 12,279,872 outputs
Outputs from Environmental Pollution
#2,053
of 3,929 outputs
Outputs of similar age
#146,587
of 264,547 outputs
Outputs of similar age from Environmental Pollution
#68
of 145 outputs
Altmetric has tracked 12,279,872 research outputs across all sources so far. This one is in the 23rd percentile – i.e., 23% of other outputs scored the same or lower than it.
So far Altmetric has tracked 3,929 research outputs from this source. They typically receive a little more attention than average, with a mean Attention Score of 6.5. This one is in the 42nd percentile – i.e., 42% 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 264,547 tracked outputs that were published within six weeks on either side of this one in any source. This one is in the 35th percentile – i.e., 35% of its contemporaries scored the same or lower than it.
We're also able to compare this research output to 145 others from the same source and published within six weeks on either side of this one. This one is in the 49th percentile – i.e., 49% of its contemporaries scored the same or lower than it.