|In urban locations, the Aethalometer monitors the mass concentration of
airborne carbon particles due to traffic and other local emission
sources. The instruments measurement time base can be set anywhere from a
1-second to 1-hour, providing flexibility for monitoring and immediate
identification of source strength and dispersion patterns.|
chemical speciation of fine particle mass concentration (ie. PM2.5) is a
mandated measurement by the US EPA. Aethalometer instruments are used
to report continuous Black (or Elemental) carbon mass concentration data
into the US EPA's National 'AIRS' Database. Real-time chemical
speciation is a major priority under the newly revised US EPA National
Monitoring Strategy, known as NCORE.
|In residential locations, the Aethalometer can indicate the impact of smoke from domestic fireplaces.|
|In rural locations, the Aethalometer can also measure the impact of smoke from prescribed agricultural burns or wild fires.|
2-Wavelength Aethalometer responds to the UV absorption of components
present in wood smoke. Simulataneously, the IR absorbing channel is
measuring the Black (or elemental) carbon associated with diesel or coal
combustion. The 2 wavelength system gives information to help
differentiate sources of airborne carbon particles.
sites, the presence of BC in the atmosphere is an indicator of the
long-range distribution of combustion-derived pollution. The high
sensitivity configuration allows data to be acquired even in the
The Aethalometer is completely automatic,
providing unattended operation for long periods. Its rapid response and
in-situ analysis allows data to be collected and immediately available.