Nitrogen oxides

NOx

Nitric oxide (NO) and nitrogen dioxide (NO2) are subject to the European Waste Incineration Directive, which puts strict limits on emissions to air. But removal of nitric oxide by incinerators is only about 60% effective and the remainder may be converted to nitrogen dioxide to form smog and acid rain.

Nitrogen dioxide has a variety of health impacts, such as higher incidence of respiratory symptoms in children, asthma, chronic obstructive pulmonary disease, lung cancer, heart disease in those over 65, and abnormally elevated immune and allergic responses. When nitrogen dioxide is combined with fine particulates and carcinogenic heavy metals (in particular cadmium), the effects on lung cancer are likely to be more potent.

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