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Uniform TitleDevelopment and evaluation of airborne carbonyl measurement methods
NameHerrington, Jason Sandor (author), Zhang, Junfeng (chair), Fan, Zhi-Hua (internal member), Lioy, Paul (internal member), Sheldon, Linda (outside member), Rutgers University, Graduate School-New Brunswick,
Degree Date2007
Date Created2007
SubjectEnvironmental Sciences,
Carbon compounds,
Air quality
DescriptionThe overall goal of the current dissertation work was to further develop and optimize the
Passive Aldehydes and Ketones Sampler (PAKS) method, and compare the PAKS method
to the United States (U.S.) Environmental Protections Agency's (EPA) Compendium
Method TO-11A (active sampling with 2,4-dinitrophenylhydrazine (DNPH)-coated solid
sorbents).
The PAKS method was optimized to have improved collection efficiencies (~100%)
and sample stabilities (on cartridge and in extract) for acrolein and crotonaldehyde (as
opposed to Method TO-11A's acrolein collection efficiency of ~20%). Subsequently, the
PAKS sample processing procedures were optimized so as to provide the most efficient,
accurate, precise, and cost effective techniques. In addition, the PAKS method blank
contamination sources and concentrations were identified, and then minimized as best as
possible. In the end, the final PAKS method demonstrated stable blank and sample
concentrations for almost a half year; method and analytical precisions, expressed as
coefficient of variation from replicate samples, of ~20% and <10%, respectively for formaldehyde, acetaldehyde, and acrolein; and analytical detection limits ranging from 0.28 to 4.81 µg/m³ and method detection limits ranging from 0.00 to 9.87 µg/m³ for a 24-hour sampling period.
Extensive laboratory experiments indicated that U.S. EPA Compendium Method
TO-11A had long-term (i.e., ≥24 hours) acetaldehyde sampling collection efficiencies that were substantially less than 100% at 30% and 60% relative humidity.
The Active Acrolein Sampler (AAS) method was developed based on the principles of
the PAKS methods. The AAS method was suitable for short-term (i.e., 30 minutes) and
long-term (i.e., ≥24 hours) acrolein sampling at sampling rates from 50 to 250 mL/min.
Relative humidity from 30 to 90%, temperature from 20 to 40° C, and the presence of ozone
up to 250 ppb did not affect the performance of the AAS method for short-term acrolein
sampling (i.e., 1 to 2 hours). The AAS method had an acrolein LOD of 0.24 µg/m³ for a 30
minute sampling duration @ 250 mL/min, which was comparable to other acrolein measurement methods; however, the AAS method is a significant advantage over other methods when one considers the AAS for its simplicity and ease of use.
Passive Aldehydes and Ketones Sampler (PAKS) method, and compare the PAKS method
to the United States (U.S.) Environmental Protections Agency's (EPA) Compendium
Method TO-11A (active sampling with 2,4-dinitrophenylhydrazine (DNPH)-coated solid
sorbents).
The PAKS method was optimized to have improved collection efficiencies (~100%)
and sample stabilities (on cartridge and in extract) for acrolein and crotonaldehyde (as
opposed to Method TO-11A's acrolein collection efficiency of ~20%). Subsequently, the
PAKS sample processing procedures were optimized so as to provide the most efficient,
accurate, precise, and cost effective techniques. In addition, the PAKS method blank
contamination sources and concentrations were identified, and then minimized as best as
possible. In the end, the final PAKS method demonstrated stable blank and sample
concentrations for almost a half year; method and analytical precisions, expressed as
coefficient of variation from replicate samples, of ~20% and <10%, respectively for formaldehyde, acetaldehyde, and acrolein; and analytical detection limits ranging from 0.28 to 4.81 µg/m³ and method detection limits ranging from 0.00 to 9.87 µg/m³ for a 24-hour sampling period.
Extensive laboratory experiments indicated that U.S. EPA Compendium Method
TO-11A had long-term (i.e., ≥24 hours) acetaldehyde sampling collection efficiencies that were substantially less than 100% at 30% and 60% relative humidity.
The Active Acrolein Sampler (AAS) method was developed based on the principles of
the PAKS methods. The AAS method was suitable for short-term (i.e., 30 minutes) and
long-term (i.e., ≥24 hours) acrolein sampling at sampling rates from 50 to 250 mL/min.
Relative humidity from 30 to 90%, temperature from 20 to 40° C, and the presence of ozone
up to 250 ppb did not affect the performance of the AAS method for short-term acrolein
sampling (i.e., 1 to 2 hours). The AAS method had an acrolein LOD of 0.24 µg/m³ for a 30
minute sampling duration @ 250 mL/min, which was comparable to other acrolein measurement methods; however, the AAS method is a significant advantage over other methods when one considers the AAS for its simplicity and ease of use.
Note[degree] Ph.D.
Note[NULL] Includes bibliographical references (p. 143-149).
Genretheses
Persistent URLhttp://hdl.rutgers.edu/1782.2/rucore10001600001.ETD.13468
LanguageEnglish
CollectionGraduate School - New Brunswick Electronic Theses and Dissertations
Organization NameRutgers, The State University of New Jersey
RightsThe author owns the copyright to this work.