NOx is a generic term for the oxides of nitrogen that have significant effects on the environment and human health. These include nitric oxide (NO) and nitrogen dioxide (NO2), which are mostly produced by the combustion of fossil fuels such as in vehicles and engines, as well as industrial processes such as power generation and cement manufacture.
Consequently, NOx measurements are vital to minimise emissions and demonstrate compliance in applications such as engine development, combustion control, emissions abatement, stack testing, and in the development of any products or processes that burn hydrocarbon fuels. Examples include process boilers, gas turbines, stationary diesel engines, domestic boilers and wood burners.
Why are NOx emissions a problem?
Globally, a wide variety of organisations have published reports linking serious health effects with short- and long-term exposure to NO2.
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