Problem

Nitrogen dioxide (NO₂) is one of the main tropospheric air pollutants. NO₂ is produced as a result of combustion processes and road traffic when coal, gas and diesel are burnt at high temperatures.

Breathing air with elevated concentrations of NO₂ can lead to increased inflammation of the airways, reduced lung function, increased asthma attacks and can cause asthma in children. Monitoring and regulation of the NO₂ levels in the atmosphere is a key task for air quality control and improvement of the general population’s health.

The fraction amount of NO₂ in the tropospheric air can vary from tens of parts-per-billion by volume in highly polluted industrial areas to parts-per-trillion by volume in the free troposphere.

Currently, there are very few instruments available on the market that allow to measure such low concentrations of NO₂.

 

MIRO MGA — NO₂ product advantages

Direct measurements of NO₂ – no conversion factors

• MGA — NO₂ analyzer is based on the laser absorption spectroscopy technique that allows to measure NO₂ directly without need to convert to NO

High precision

• In comparison with standard methods of NO₂ monitoring, MGA — NO₂ analyzer allows to reach high precision due to direct measurements of gas concentration

Fast response time

• Measurement rate of 1 Hz allows the MGA — NO₂ analyzer to resolve rapidly changing concentrations of NO₂ in ambient air.

 

Product specifications

RESPONSE TIME	< 2 s
ZERO DRIFT	< 0.015 ppb
PRECISION	< 6 ppt
RANGE	0 – 40 ppm

 

Monitoring results