title: Gravimetric Analysis of Particulate Matter using Air Samplers Housing Internal Filtration Capsules.
abstract: An evaluation was carried out to investigate the suitability of polyvinyl chloride (PVC) internal capsules, housed within air sampling devices, for gravimetric analysis of airborne particles collected in workplaces. Experiments were carried out using blank PVC capsules and PVC capsules spiked with 0,1 - 4 mg of National Institute of Standards and Technology Standard Reference Material®(NIST SRM) 1648 (Urban Particulate Matter) and Arizona Road Dust (Air Cleaner Test Dust). The capsules were housed within plastic closed-face cassette samplers (CFCs). A method detection limit (MDL) of 0,075 mg per sample was estimated. Precision Srat 0,5 - 4 mg per sample was 0,031 and the estimated bias was 0,058. Weight stability over 28 days was verified for both blanks and spiked capsules. Independent laboratory testing on blanks and field samples verified long-term weight stability as well as sampling and analysis precision and bias estimates. An overall precision estimate Ŝrtof 0,059 was obtained. An accuracy measure of ±15,5% was found for the gravimetric method using PVC internal capsules.
authors.affiliation: US Department of Health and Human Services, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, 4676 Columbia Parkway, Mail Stop R-7, Cincinnati, Ohio 45226-1998, USA, KAshley@cdc.gov.
authors.forename: Sean
authors.initials: S
authors.lastname: O'Connor
authors.affiliation: US Department of Health and Human Services, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, 4676 Columbia Parkway, Mail Stop R-7, Cincinnati, Ohio 45226-1998, USA, KAshley@cdc.gov.
authors.forename: Paula Fey
authors.initials: PF
authors.lastname: O'Connor
authors.affiliation: US Department of Health and Human Services, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, 4676 Columbia Parkway, Mail Stop R-7, Cincinnati, Ohio 45226-1998, USA, KAshley@cdc.gov.
authors.forename: H Amy
authors.initials: HA
authors.lastname: Feng
authors.affiliation: US Department of Health and Human Services, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, 4676 Columbia Parkway, Mail Stop R-7, Cincinnati, Ohio 45226-1998, USA, KAshley@cdc.gov.
authors.forename: Kevin
authors.initials: K
authors.lastname: Ashley