Measurements of fine particulate matter in Houston

dc.contributor.advisorFraser, Matthew P.en_US
dc.creatorLakshmanan, Kalyan Ramanen_US
dc.date.accessioned2009-06-04T08:30:09Zen_US
dc.date.available2009-06-04T08:30:09Zen_US
dc.date.issued2000en_US
dc.description.abstractThe Rice University Fine Particulate Matter Air Sampling Study (1999--2000) identified and quantified the fine particulate matter (PM2.5) in an urban setting in Houston, Texas. The study lasted over two time periods to characterize the seasonal changes; the summer period was between August 16, 1999 and October 1, 1999 and the winter period was between December 18, 1999 and January 31, 2000. PM2.5 was isolated with a cyclone separator and quantified through gravimetric analysis. The major gaseous species (SO 2, gaseous NO3, NH3) and chemical species (organic carbon, elemental carbon, SO42--, NO3 --, NH4+, Na +, K+, and Cl--) were collected by multiple types of filter media and analyzed by ion chromatography, gas chromatography, mass spectrometry, and thermal/optical carbon analysis. PM 2.5 concentration during the summer and winter periods was 8.2 +/- 0.6mug/m3 and 6.2 +/- 0.6mug/m3 respectively and did not exceed the NAAQS PM2.5 standard. The major particulate species (in terms of mass fractions in the summer/winter) were OC (39%/36%), SO4 (20%/9%), NH4 (8%/4%), EC (3%/3%), and NO3 (1%/7%). In both time periods, a large mass fraction was attributed to unknown materials (28%/38%). The OC, SO4, and NH4 mass fraction decreased from the summer to the winter while the NO3 and EC mass fraction increased. The organic fraction of the particulate matter contained n-alkanes and polycyclic aromatic hydrocarbons.en_US
dc.format.extent134 p.en_US
dc.format.mimetypeapplication/pdfen_US
dc.identifier.callnoTHESIS ENV.SCI. 2000 LAKSHMANANen_US
dc.identifier.citationLakshmanan, Kalyan Raman. "Measurements of fine particulate matter in Houston." (2000) Master’s Thesis, Rice University. <a href="https://hdl.handle.net/1911/17353">https://hdl.handle.net/1911/17353</a>.en_US
dc.identifier.urihttps://hdl.handle.net/1911/17353en_US
dc.language.isoengen_US
dc.rightsCopyright is held by the author, unless otherwise indicated. Permission to reuse, publish, or reproduce the work beyond the bounds of fair use or other exemptions to copyright law must be obtained from the copyright holder.en_US
dc.subjectEnvironmental scienceen_US
dc.subjectEnvironmental engineeringen_US
dc.titleMeasurements of fine particulate matter in Houstonen_US
dc.typeThesisen_US
dc.type.materialTexten_US
thesis.degree.departmentEnvironmental Scienceen_US
thesis.degree.disciplineEngineeringen_US
thesis.degree.grantorRice Universityen_US
thesis.degree.levelMastersen_US
thesis.degree.nameMaster of Scienceen_US
Files
Original bundle
Now showing 1 - 1 of 1
Loading...
Thumbnail Image
Name:
1399280.PDF
Size:
6.76 MB
Format:
Adobe Portable Document Format