Quantifying particulate matter deposition in Niwot Ridge, Colorado: Collection of dry deposition using marble inserts and particle imaging using the FlowCAM

Goss, Natasha; Mladenov, Natalie; Seibold, Christine; Chowanski, Kurt; Seitz, Leslie; Wellemeyer, T. Barret; Williams, Mark W.

doi:10.1016/j.atmosenv.2013.08.037

Cited by 11 publications

(13 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Marble inserts were then sealed with a leak‐resistant Sterilite® lid, placed into a plastic bag, transported within a few hours to the laboratory, and stored at 4°C until processing. Goss et al () demonstrated that processing of the marble insert did not result in measurable losses of particulate matter.…”

Section: Methodsmentioning

confidence: 99%

Seasonal Patterns of Dry Deposition at a High‐Elevation Site in the Colorado Rocky Mountains

et al. 2017

Self Cite

View full text Add to dashboard Cite

In the Colorado Rocky Mountains, high‐elevation barren soils are deficient in carbon (C) and phosphorus (P) and enriched in nitrogen (N). The seasonal variability of dry deposition and its contributions to alpine elemental budgets is critical to understanding how dry deposition influences biogeochemical cycling in high‐elevation environments. In this 2 year study, we evaluated dry and wet deposition inputs to the Niwot Ridge Long Term Ecological Research (NWT LTER) site in the Colorado Rocky Mountains. The total organic C flux in wet + dry (including soluble and particulate C) deposition was >30 kg C ha−1 yr−1 and represents a substantial input for this C‐limited environment. Our side‐by‐side comparison of dry deposition collectors with and without marble insert indicated that the insert improved retention of dry deposition by ~28%. Annual average dry deposition fluxes of water‐soluble organic carbon (4.25 kg C ha−1 yr−1) and other water‐soluble constituents, including ammonium (0.16 kg NH4+ha−1 yr−1), nitrate (1.99 kg NO3− ha−1 yr−1), phosphate (0.08 kg PO43− ha−1 yr−1), and sulfate (1.20 kg SO42− ha−1 yr−1), were comparable to those in wet deposition, with highest values measured in the summer. Backward trajectory analyses implicate air masses passing through the arid west and Four Corners, USA, as dominant source areas for dry deposition, especially in spring months. Synchronous temporal patterns of deposition observed at the NWT LTER site and a distant Rocky Mountain National Park Clean Air Status and Trends Network site indicate that seasonal dry deposition patterns are regional phenomena with important implications for the larger Rocky Mountain region.

show abstract

Section: Methodsmentioning

confidence: 99%

Seasonal Patterns of Dry Deposition at a High‐Elevation Site in the Colorado Rocky Mountains

et al. 2017

Self Cite

View full text Add to dashboard Cite

show abstract

“…To demonstrate a platform technology to utilize natural pollen grains as a drug delivery vehicle, the grains have been characterized methodically to assess uniformity in size, morphology, and physical changes arising during the course of the encapsulation process. In order to characterize natural pollen grains we employed dynamic imaging particle analysis (DIPA) (see the Supporting Information). Figure A shows representative data by curve fitting histograms of equivalent spherical diameter (ESD) versus frequency with an average ESD of 37.93 ± 1.41 μm for natural pollen grains and an ESD of 36.54 ± 1.45 μm, 36.95 ± 1.35 μm, and 36.17 ± 1.36 μm, respectively, for passive, compression, and vacuum‐loaded pollen grains.…”

Section: Methodsmentioning

confidence: 99%

Natural Sunflower Pollen as a Drug Delivery Vehicle

Mundargi

Potroz

Park

et al. 2015

Small

101

110

View full text Add to dashboard Cite

In nature, pollen grains play a vital role for encapsulation. Many pollen species exist which are often used as human food supplements. Dynamic image particle analysis, scanning electron microscopy, and confocal microscopy analysis confirmed the size, structural uniformity, and macromolecular encapsulation in sunflower pollen, paving the way to explore natural pollen grains for the encapsulation of therapeutic molecules.

show abstract

“…The use of surrogate surface is one approach to directly measure dry deposition (Odabassi et al 2002). Goss et al (2013) developed and tested a marble insert for dry deposition collection. Then, they developed a method for enumerating the collected dry deposition with the flow Cytometer and Microscope (FlowCAM), a dynamic image particle analysis tool.…”

Section: Discussion On Various Methods Of Flux Measurementmentioning

confidence: 99%

An overview of particulate dry deposition: measuring methods, deposition velocity and controlling factors

Mohan

2015

Int. J. Environ. Sci. Technol.

View full text Add to dashboard Cite

Much importance was given to dry deposition over the past few decades as it deteriorated the environmental conditions and resulted in subsequent health effects. This paper starts with an overall scenario of dry deposition research; it focuses on: various particulate dry deposition flux measurement methods, comparison of various published numerical values on dry deposition velocity and factors controlling dry deposition velocity. This work provides a technical overview to research studies on the current state of dry deposition and limitations of various measurement methods. Relationship between dry deposition flux and particle concentration is discussed with the help of previous works. Various mathematical models used to predict dry deposition velocity are discussed. Dry deposition velocity of particulates around the world is compared to gain perspective on factors influencing dry deposition.

show abstract

Quantifying particulate matter deposition in Niwot Ridge, Colorado: Collection of dry deposition using marble inserts and particle imaging using the FlowCAM

Cited by 11 publications

References 29 publications

Seasonal Patterns of Dry Deposition at a High‐Elevation Site in the Colorado Rocky Mountains

Seasonal Patterns of Dry Deposition at a High‐Elevation Site in the Colorado Rocky Mountains

Natural Sunflower Pollen as a Drug Delivery Vehicle

An overview of particulate dry deposition: measuring methods, deposition velocity and controlling factors

Contact Info

Product

Resources

About