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Characteristics of organic and elemental carbon in particulate matter on the US East Coast: a case study at metropolitan Newark in New Jersey
Descriptive
TitleInfo
Title
Characteristics of organic and elemental carbon in particulate matter on the US East Coast: a case study at metropolitan Newark in New Jersey
Name
(type = personal)
NamePart
(type = family)
Gonzalez
NamePart
(type = given)
Isbel
NamePart
(type = date)
1976
DisplayForm
Isbel Gonzalez
Role
RoleTerm
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(type = text)
author
Name
(type = personal)
NamePart
(type = family)
Gao
NamePart
(type = given)
Yuan
DisplayForm
Yuan Gao
Affiliation
Advisory Committee
Role
RoleTerm
(authority = RULIB)
chair
Name
(type = corporate)
NamePart
Rutgers University
Role
RoleTerm
(authority = RULIB)
degree grantor
Name
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NamePart
Graduate School - Newark
Role
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school
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Text
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theses
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2021
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2021-01
Language
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(authority = ISO 639-3:2007);
(type = text)
English
Abstract
To investigate the day- and night-time variability of carbonaceous aerosols in the ambient air in metropolitan Newark in New Jersey on the US east coast, particulate air samples of PM2.5 (particles with diameter ≤2.5 µm) and PM2.5-10 (particles with diameter 2.5-10 µm) were collected from downtown Newark. Air samples were analyzed by thermal-optical analysis methods for elemental carbon (EC) and organic carbon (OC). The results show that the total carbonaceous particulate matter (PM) in the air was dominated by coarse-mode particles. The OC/EC ratios varied from 5.3 to 50.9, with an average of 19.2 ± 11.7 for PM2.5, and from 5.1 to 13.7, averaging 7.5 ± 2.1 for PM2.5-10. Higher concentrations of OC in PM2.5 particles occurred at night with a moderate correlation with Relative Humidity (RH) (R²=0.52), suggesting the possible formation of secondary organic aerosols (SOC) via aqueous-phase oxidation of low volatility organic compounds. Fine-mode OC had moderate correlations with PM2.5 sodium (R2=0.59) and PM2.5-10 sodium (R2=0.37), suggesting a mixed influence of anthropogenic and marine sources. Fine mode EC had a strong relationship with PM2.5 nitrate (R² = 0.75), suggesting an anthropogenic source for PM2.5 EC, as nitrate is a secondary aerosol formed from nitrogen oxides (NOx) emitted mainly by traffic sources. The concentrations of coarse mode EC (PM2.5-10) were higher during the daytime than at night, suggesting a major contribution from mobile sources. The PM10/PM2.5 ratios observed during this study were 4.6 for OC and 7.8 for EC, higher than those from selected previous studies. The highest concentrations of carbonaceous aerosols were associated with east-southeast winds; busy highways were also in that direction, while the concentrations of them were the lowest under west winds. This suggests that winds played an important role in the variations of carbonaceous aerosols in the air in this region.
Subject
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Topic
Environmental Geology
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TitleInfo
Title
Rutgers University Electronic Theses and Dissertations
Identifier
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ETD
Identifier
ETD_11319
PhysicalDescription
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application/pdf
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text/xml
Extent
1 online resource (viii, 48 pages)
Note
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M.S.
Note
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Includes bibliographical references
Genre
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ETD graduate
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TitleInfo
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Graduate School - Newark Electronic Theses and Dissertations
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rucore10002600001
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NjNbRU
Identifier
(type = doi)
doi:10.7282/t3-w5f0-pe93
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Rights
RightsDeclaration
(ID = rulibRdec0006)
The author owns the copyright to this work.
RightsHolder
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Name
FamilyName
Gonzalez
GivenName
Isbel
Role
Copyright Holder
RightsEvent
Type
Permission or license
DateTime
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2020-11-30 15:16:02
AssociatedEntity
Name
Isbel Gonzalez
Role
Copyright holder
Affiliation
Rutgers University. Graduate School - Newark
AssociatedObject
Type
License
Name
Author Agreement License
Detail
I hereby grant to the Rutgers University Libraries and to my school the non-exclusive right to archive, reproduce and distribute my thesis or dissertation, in whole or in part, and/or my abstract, in whole or in part, in and from an electronic format, subject to the release date subsequently stipulated in this submittal form and approved by my school. I represent and stipulate that the thesis or dissertation and its abstract are my original work, that they do not infringe or violate any rights of others, and that I make these grants as the sole owner of the rights to my thesis or dissertation and its abstract. I represent that I have obtained written permissions, when necessary, from the owner(s) of each third party copyrighted matter to be included in my thesis or dissertation and will supply copies of such upon request by my school. I acknowledge that RU ETD and my school will not distribute my thesis or dissertation or its abstract if, in their reasonable judgment, they believe all such rights have not been secured. I acknowledge that I retain ownership rights to the copyright of my work. I also retain the right to use all or part of this thesis or dissertation in future works, such as articles or books.
Copyright
Status
Copyright protected
Availability
Status
Open
Reason
Permission or license
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windows xp
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2020-12-07T21:17:35
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2020-12-21T10:51:55
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Adobe PDF Library 11.0
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