Formaldehyde monitoring in domestic environments

Conference · Thu Jan 01 00:00:00 EST 1981

OSTI ID:6713423

Matthews, T G; Hawthorne, A R; Howell, T C; Metcalfe, C E; Gammage, R B

A research program has been established for the development of practical analytical techniques for the monitroing of formaldehyde (CH/sub 2/O) concentration levels in domestic environments. A modified CEA Instruments, Inc. colorimetric analyzer has been demonstrated to be a sensitive (approx. = 10 ppB CH/sub 2/O detection limit), near-real-time, CH/sub 2/O-specific analysis technique for applications in indoor air quality research. A simple analytical methodology was also developed for the application of 13X moleculr sieve as a solid sorbent for CH/sub 2/O. The sorbent has been utilized in a pumped collection unit with a demonstrated 0.025 to 10.0 ppM linear dynamic range using sampling periods of < 20 minutes. The development of screening-type technologies included a low-cost semi-permeable membrane passive sampling unit that is applicable to measurements of average CH/sub 2/O concentration levels in indoor air over 8 to 24 hour periods and a visual colorimetric analysis method for sensitive, semiquantitative CH/sub 2/O determinations using highly stable solid chemical reagents. A prelimiary field evaluation demonstrated excellent agreement between the new CH/sub 2/O monitoring methods and a reference sampling and analysis methodology. A generation apparatus for the production of CH/sub 2/O vapor is also reported with a demonstrated 0.002 to 10.0 ppM linear dynamic range.

• Research Organization: Oak Ridge National Lab., TN (USA)
• DOE Contract Number: W-7405-ENG-26
• OSTI ID: 6713423
• Report Number(s): CONF-811048-4; ON: DE83001891
• Resource Relation: Conference: International symposium on indoor air pollution, health and energy conservation, Amherst, MA, USA, 13 Oct 1981
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
FORMALDEHYDE
MONITORING
ABSORPTION SPECTROSCOPY
AIR POLLUTION MONITORS
COMPARATIVE EVALUATIONS
EXPERIMENTAL DATA
INDOOR AIR POLLUTION
TRACE AMOUNTS
AIR POLLUTION
ALDEHYDES
DATA
INFORMATION
MEASURING INSTRUMENTS
MONITORS
NUMERICAL DATA
ORGANIC COMPOUNDS
POLLUTION
SPECTROSCOPY
500200* - Environment
Atmospheric- Chemicals Monitoring &amp; Transport- (-1989)