NIST - National Institute of Standards and Technology
NOx - nitrogen oxide
O3 - ozone
PE - performance evaluation
PM2.5 - particulate matter with aerodynamic diameter less than 2.5 microns
ppbv - parts per billion by volume
QA - quality assurance
QAPP - quality assurance project plan
QC - quality control
QMP - quality management plan
RFID - radio frequency identification
RH - relative humidity
RSD - relative standard deviation
SIM - single ion monitoring
SIS - Selected Ion Storage
SOP - standard operating procedure
TEOM - tapered element oscillating microbalance
TSA - technical systems audit
USEPA - U.S. Environmental Protection Agency
UV - ultra-violet
VID - video image detection
VOC - volatile organic compound
A commercial instrument used to continuously measure "black carbon," and recommended for use in the studies to be conducted under this Protocol as a surrogate measurement for diesel particulate matter./dd>
Beta attenuation monitor - Any of a number of commercial instruments used to continuously measure particulate matter mass and recommended for use in the studies to be conducted under this Protocol as a surrogate measurement for PM2.5.
Mobile source air toxics - A group of compounds identified by the USEPA as being common pollutants in mobile source emissions. For this Protocol the following MSATs are of interest: acetaldehyde, acrolein, benzene, 1,3-butadiene, formaldehyde, and diesel particulate matter (DPM).
Tapered element oscillating microbalance monitor - A commercial instrument used to continuously measure particulate matter mass and recommended for use in the studies to be conducted under this Protocol as a surrogate measurement for PM2.5.
TO-11A - Method TO-11A
A standard method, recommended by the USEPA, used for the determination of formaldehyde and other carbonyl compounds (aldehydes and ketones) in ambient air.
TO-15 - Method TO-15
A standard method, recommended by the USEPA, used for the sampling and analysis of volatile organic compounds (VOCs) in ambient air including the MSATs benzene and 1,3-butadiene.