Source apportionment of molecular markers and organic aerosols-1. Polycyclic aromatic hydrocarbons and methodology for data visualization. Robinson, A., L.; Subramanian, R.; Donahue, N., M.; Bernardo-Bricker, A.; and Rogge, W., F. Environ. Sci. Technol., 40:7803-7810, 2006.
Source apportionment of molecular markers and organic aerosols-1. Polycyclic aromatic hydrocarbons and methodology for data visualization [link]Website  abstract   bibtex   
Individual organic compounds often referred to as molecular markers are used in conjunction with the chemical mass balance (CMB) model to apportion sources of primary organic aerosol. This paper presents a methodology to visualize molecular marker data; it allows comparison of ambient data and source profiles and allows assessment of chemical stability and aging. The method is intended to complement traditional quantitative source apportionment analysis. The core of the technique involves construction of plots of ratios of species concentrations (ratio-ratio plots) in which source profiles appear as points connected by linear mixing lines. The approach is illustrated using data collected over a 1-year period in Pittsburgh, Pennsylvania. The analysis considers for elemental carbon and a number of high molecular weight polycyclic aromatic hydrocarbons (PAHs) commonly used as molecular markers in CMB: benzo(b+j+k)fluoranthene, benzo(e) pyrene, benzo[ g, h, i] perylene, coronene, and indeno(1,2,3-cd) pyrene. In Pittsburgh, the ambient concentrations of these PAHs are higher than in other cities in the United States; they are also strongly correlated consistent with a single, dominant source. Both ratio-ratio plots and CMB analysis indicate that this source is metallurgical coke production. Although emissions from coke production dominate ambient PAH concentrations, on most study days they contributed little fine particle mass. Ratio-ratio plots are then used to investigate the feasibility of using PAHs to help differentiate between gasoline and diesel vehicle emissions. Ambient concentrations of these large PAHs provide little information on the gasoline-diesel split because of the strong influence of local emissions from coke production combined with evidence of photochemical decay of PAHs in the regional air mass. Decay of PAHs will bias estimates of the gasoline-diesel split toward diesel emissions. C1 Carnegie Mellon Univ, Dept Mech Engn, Pittsburgh, PA 15213 USA. Carnegie Mellon Univ, Dept Chem, Pittsburgh, PA 15213 USA. Carnegie Mellon Univ, Dept Chem Engn, Pittsburgh, PA 15213 USA. Florida Int Univ, Dept Divil & Environm Engn, Miami, FL 33199 USA. Florida Int Univ, Dept Civil & Environm Engn, Miami, FL 33199 USA.
@article{
 title = {Source apportionment of molecular markers and organic aerosols-1. Polycyclic aromatic hydrocarbons and methodology for data visualization},
 type = {article},
 year = {2006},
 identifiers = {[object Object]},
 pages = {7803-7810},
 volume = {40},
 websites = {http://dx.doi.org/10.1021/es0510414},
 id = {c5845dc1-61de-313e-a53a-178b2ee536b1},
 created = {2014-10-08T16:28:18.000Z},
 file_attached = {false},
 profile_id = {363623ef-1990-38f1-b354-f5cdaa6548b2},
 group_id = {02267cec-5558-3876-9cfc-78d056bad5b9},
 last_modified = {2017-03-14T17:32:24.802Z},
 read = {false},
 starred = {false},
 authored = {false},
 confirmed = {true},
 hidden = {false},
 citation_key = {Robinson:EST:2006a},
 source_type = {article},
 private_publication = {false},
 abstract = {Individual organic compounds often referred to as
molecular markers are used in conjunction with the chemical mass
balance (CMB) model to apportion sources of primary organic
aerosol. This paper presents a methodology to visualize molecular
marker data; it allows comparison of ambient data and source
profiles and allows assessment of chemical stability and aging. The
method is intended to complement traditional quantitative source
apportionment analysis. The core of the technique involves
construction of plots of ratios of species concentrations
(ratio-ratio plots) in which source profiles appear as points
connected by linear mixing lines. The approach is illustrated using
data collected over a 1-year period in Pittsburgh, Pennsylvania.
The analysis considers for elemental carbon and a number of high
molecular weight polycyclic aromatic hydrocarbons (PAHs) commonly
used as molecular markers in CMB: benzo(b+j+k)fluoranthene,
benzo(e) pyrene, benzo[ g, h, i] perylene, coronene, and
indeno(1,2,3-cd) pyrene. In Pittsburgh, the ambient concentrations
of these PAHs are higher than in other cities in the United States;
they are also strongly correlated consistent with a single,
dominant source. Both ratio-ratio plots and CMB analysis indicate
that this source is metallurgical coke production. Although
emissions from coke production dominate ambient PAH concentrations,
on most study days they contributed little fine particle mass.
Ratio-ratio plots are then used to investigate the feasibility of
using PAHs to help differentiate between gasoline and diesel
vehicle emissions. Ambient concentrations of these large PAHs
provide little information on the gasoline-diesel split because of
the strong influence of local emissions from coke production
combined with evidence of photochemical decay of PAHs in the
regional air mass. Decay of PAHs will bias estimates of the
gasoline-diesel split toward diesel emissions.
C1 Carnegie Mellon Univ, Dept Mech Engn, Pittsburgh, PA 15213 USA.
Carnegie Mellon Univ, Dept Chem, Pittsburgh, PA 15213 USA. Carnegie
Mellon Univ, Dept Chem Engn, Pittsburgh, PA 15213 USA. Florida Int
Univ, Dept Divil & Environm Engn, Miami, FL 33199 USA. Florida Int
Univ, Dept Civil & Environm Engn, Miami, FL 33199 USA.},
 bibtype = {article},
 author = {Robinson, A L and Subramanian, R and Donahue, N M and Bernardo-Bricker, A and Rogge, W F},
 journal = {Environ. Sci. Technol.}
}
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