NEW JERSEY AMBIENT AIR MONITORING NETWORK PLAN 2020 41
VOC – Volatile organic compound, a carbon-based chemical that is gaseous
XRF – X-ray fluorescence, a method for analyzing elements from fine particles
TERMS
Acid deposition – acid rain, the phenomenon by which air pollutants raise the acidity of rain and snow
Ambient air – air in areas that are accessible to the general public
Background – a monitoring site in an area which is not affected by air pollution sources
Canister – a stainless steel container used for collecting an air sample to be analyzed for VOCs
Capacitive sensor – an instrument used for measuring relative humidity
Carbonyls – a group of aldehydes, or a carbon chain with an oxygen molecule at one end
Chemiluminescence – the method used for analyzing for NO, NO
2
and NO
x
Coarse particles – also PM
10-2.5
; particles between 10 and 2.5 micrometers in aerodynamic diameter
Collocated – two samplers operating side-by-side in order to collect data used for precision statistics
Continuous – an instrument that collects data instantaneously, without stopping, throughout the year,
and transmits the data to a central data acquisition system every minute
Fine particles – also PM
2.5
; particles 2.5 micrometers in aerodynamic diameter or smaller
Gravimetric – weighing a filter in a controlled environment by a highly accurate balance
Highest concentration – a monitoring instrument or site which is designated to measure the maximum
concentration of a pollutant in a given area
Inhalable particles – also PM
10
; particles 10 micrometers in aerodynamic diameter or smaller
Ion chromatography – also IC, a method used for analyzing for ionic compounds
Manual sampler– an instrument that collects an air sample over a 24-hour filter on a filter, adsorbent
cartridge or canister which is then manually retrieved for subsequent analysis
Met One – a manufacturer of PM
2.5
speciation samplers
Microscale – the spatial scale of a monitoring site, from 10–100 meters around the monitor
Middle-scale – the spatial scale of a monitoring site, from 100–1000 meters around the monitor
Near Road monitoring -
Neighborhood-scale – the spatial scale of a monitoring site, from 1-10 km around the monitor
Nephelometer – an instrument that measures fine particles through light scattering
Nondispersive infrared – the method used for analyzing for carbon monoxide
Ozone precursors – a group of 55 volatile organic compounds that affect ozone formation and
destruction in the atmosphere; also called PAMS pollutants
Population exposure – a monitoring instrument or site that is designated to measure the concentrations
of a pollutant in a highly populated area
Pulsed fluorescence – the method used for analyzing for sulfur dioxide
Pyrometer – the method used for measuring solar radiation
Real-time PM
2.5
– PM
2.5
concentrations that are measured continuously
Regional scale – the spatial scale of a monitoring site, from 100-1000 km around the monitor
Solar radiation – the intensity of energy from sunlight
Ultraviolet – the method used for analyzing ozone
Urban Scale – the spatial scale of a monitoring site, from 10-100 km around the monitor