Speciation of ambient sulfate particulate matter using FT-IR-based absorption to complement wet chemical and thermal speciation measurements

Technical Report · Sat Jan 01 04:00:00 EST 1994

OSTI ID:7070430

McClenny, W A; Krost, K J; Daughtrey, E H; Williams, D D; Allen, G A

The direct, nondestructive, infrared transmission measurement of fine particles on Teflon filters is used to unambiguously identify ammonium bisulfate in particle samples collected from the ambient air. The samples are collected at 10 L/min over 23 hours for 24 consecutive summer days (21 July - 14 August) in 1991 in a rural setting near State College, PA. These measurements are combined with the wet chemical analysis of the collected particles to infer the partition of particulate sulfate as ammonium sulfate, ammonium bisulfate, and sulfate associated with excess free hydrogen ion. The effects of particle reactions on the filter in altering the speciation are estimated by comparison of these results with the averaged real-time results obtained by thermal speciation.

• Research Organization: ManTech Environmental Technology, Inc., Research Triangle Park, NC (United States)
• OSTI ID: 7070430
• Report Number(s): PB-95-131157/XAB; CNN: EPA-68-D0-0106
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
540120* -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (1990-)
AIR POLLUTION MONITORING
AMMONIUM COMPOUNDS
AMMONIUM SULFATES
FILTERS
FLUORINATED ALIPHATIC HYDROCARBONS
HALOGENATED ALIPHATIC HYDROCARBONS
MATERIALS
MATERIALS TESTING
MONITORING
NONDESTRUCTIVE TESTING
ORGANIC COMPOUNDS
ORGANIC FLUORINE CO
ORGANIC HALOGEN COMPOUNDS
ORGANIC POLYMERS
OXYGEN COMPOUNDS
PETROCHEMICALS
PETROLEUM PRODUCTS
PLASTICS
POLYMERS
POLYTETRAFLUOROETHYLENE
SULFATES
SULFUR COMPOUNDS
SYNTHETIC MATERIALS
TEFLON
TESTING