Insights into the Origin of Water Soluble Organic Carbon in Atmospheric Fine Particulate Matter

Snyder, David C.; Rutter, Andrew P.; Collins, Ryan; Worley, Chris; Schauer, James J.

doi:10.1080/02786820903188701

Cited by 68 publications

(36 citation statements)

References 43 publications

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“…This method assumes that: (1) the contribution of semi-volatile organic compounds is relatively small compared with non-volatile organics; (2) the composition of primary carbonaceous aerosol emissions and the relative contribution of each source to the aerosol load are spatially and temporally constant; and (3) the contribution of non-combustion primary particulate OC is small or constant. Further discussion of the assumptions relative to the use of this method may be found in Castro et al (1999) and Snyder et al (2009). Results of the minimum OC/EC ratio calculations indicate that the estimated annual arithmetic mean PM 1 SOC concentration was 5.5 µg m -3 , which is 28.9% of the total OC (Table 2).…”

Section: Carbonaceous Aerosolmentioning

confidence: 99%

Chemical Characteristics of Fine Particles (PM₁) from Xi'an, China

Shen

Cao

Arimoto

et al. 2010

Aerosol Science and Technology

100

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Daily mass concentrations of water-soluble inorganic (WS-i) ions, organic carbon (OC), and elemental carbon (EC) were determined for fine particulate matter (PM 1 , particles < 1.0 µm in diameter) collected at Xi'an, China. The annual mean PM 1 mass concentration was 127.3 ± 62.1 µg m -3 : WS-i ions accounted for ∼38% of the PM 1 mass; carbonaceous aerosol was ∼30%; and an unidentified fraction, probably mostly mineral dust, was ∼32%. WS-i ions and carbonaceous aerosol were the dominant species in winter and autumn, whereas the unidentified fraction had stronger influences in spring and summer. Ion balance calculations indicate that PM 1 was more acidic than PM 2.5 from the same site. PM 1 mass, sulfate and nitrate concentrations followed the order winter > spring > autumn > summer, but OC and EC levels were higher in autumn than spring. Annual mean OC and EC concentrations were 21.0 ± 12.0 µg m −3 and 5.1 ± 2.7 µg m -3 with high OC/EC ratios, presumably reflecting emissions from coal combustion and biomass burning. Secondary organic carbon, estimated from the minimum OC/EC ratios, comprised 28.9% of the OC. Positive matrix factorization (PMF) analysis indicates that secondary aerosol and combustion emissions were the major sources for PM 1 .

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Section: Carbonaceous Aerosolmentioning

confidence: 99%

Chemical Characteristics of Fine Particles (PM₁) from Xi'an, China

Shen

Cao

Arimoto

et al. 2010

Aerosol Science and Technology

100

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“…Aerosols and organic vapors act as cloud condensing nuclei, stimulating cloud production (Figure 1.1; Kerminen et al, 2000;Riipinen et al, 2011). Aerosol particles come from various sources such as aeolian transport of dust, terrestrial plants (e.g., isoprene emission), combustion of plant biomass and fossil fuels (i.e., "black carbon"), and agricultural/ industrial activities (Simoneit and Elias, 2000;Pio et al, 2001;Snyder et al, 2009).…”

Section: Above-ground Carbon Flow Pathsmentioning

confidence: 99%

Where Carbon Goes When Water Flows: Carbon Cycling across the Aquatic Continuum

et al. 2017

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The purpose of this review is to highlight progress in unraveling carbon cycling dynamics across the continuum of landscapes, inland waters, coastal oceans, and the atmosphere. Earth systems are intimately interconnected, yet most biogeochemical studies focus on specific components in isolation. The movement of water drives the carbon cycle, and, as such, inland waters provide a critical intersection between terrestrial and marine biospheres. Inland, estuarine, and coastal waters are well studied in regions near centers of human population in the Northern hemisphere. However, many of the world's large river systems and their marine receiving waters remain poorly characterized, particularly in the tropics, which contribute to a disproportionately large fraction of the transformation of terrestrial organic matter to carbon dioxide, and the Arctic, where positive feedback mechanisms are likely to amplify global climate change. There are large gaps in current coverage of environmental observations along the aquatic continuum. For example, tidally-influenced reaches of major rivers and near-shore coastal regions around river plumes are often left out of carbon budgets due to a combination of methodological constraints and poor data coverage. We suggest that closing these gaps could potentially alter global estimates of CO 2 outgassing from surface waters to the atmosphere by several-fold. Finally, in order to identify and constrain/embrace uncertainties in global carbon budget estimations it is important that we further adopt statistical and modeling approaches that have become well-established in the fields of oceanography and paleoclimatology, for example.

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“…WSOC is emitted by primary sources (biomass burning), is produced in the atmosphere by gas-to-particle conversion processes (secondary organic aerosol formation), and can be used to track aging of particulate carbon (Hecobian et al, 2010;Zhang et al, 2012;Kirillova et al, 2013). Several campaigns have measured WSOC concentrations in the central United States; however, these campaigns do not include absorption parameters for WSOC (Anderson et al, 2008;Snyder et al, 2009;Asa-Awuku et al, 2011). This study is the first in the central United States to include long-term WSOC absorption measurements.…”

Section: Introductionmentioning

confidence: 99%

Urban impacts on regional carbonaceous aerosols: Case study in central Texas

Barrett

Sheesley

2014

Journal of the Air & Waste Management Association

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Rural and background sites provide valuable information on the concentration and optical properties of organic, elemental, and water-soluble organic carbon (OC, EC, and WSOC), which are relevant for understanding the climate forcing potential of regional atmospheric aerosols. Implications: Background concentration and absorption measurements are essential in determining regional potential radiative forcing due to atmospheric aerosols. Back trajectory, chemical, and optical analysis of PM 2.5 was used to determine climatic and air quality implications of urban outflow to a regional receptor site, representative of the central United States. Results indicate that central Texas organic carbon has mixed urban and rural sources, while elemental carbon is controlled by the transport of urban emissions. Analysis of aerosol absorption showed black carbon as the dominant absorber, with less brown carbon absorption than regional studies in California and the southeastern United States.

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Insights into the Origin of Water Soluble Organic Carbon in Atmospheric Fine Particulate Matter

Cited by 68 publications

References 43 publications

Chemical Characteristics of Fine Particles (PM₁) from Xi'an, China

Chemical Characteristics of Fine Particles (PM₁) from Xi'an, China

Where Carbon Goes When Water Flows: Carbon Cycling across the Aquatic Continuum

Urban impacts on regional carbonaceous aerosols: Case study in central Texas

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Insights into the Origin of Water Soluble Organic Carbon in Atmospheric Fine Particulate Matter

Cited by 68 publications

References 43 publications

Chemical Characteristics of Fine Particles (PM1) from Xi'an, China

Chemical Characteristics of Fine Particles (PM1) from Xi'an, China

Where Carbon Goes When Water Flows: Carbon Cycling across the Aquatic Continuum

Urban impacts on regional carbonaceous aerosols: Case study in central Texas

Contact Info

Product

Resources

About

Chemical Characteristics of Fine Particles (PM₁) from Xi'an, China

Chemical Characteristics of Fine Particles (PM₁) from Xi'an, China