Nitrogen-oxide emissions during the cruising portions of the flight fell by around a quarter.

飞行中巡航部分的氮氧化物的排放量下降了四分之一左右。

youdao

Since nitrogen oxide compounds are components of smog and are common water pollutants, does nitrogen-enriched gasoline create additional pollution?

既然氮氧化物是烟尘成分的一种，也是常见的水污染物，那加氮汽油会不会产生额外的污染呢？

youdao

Depending on the size of the aircraft, the burning of fuel during a single flight produces between 8-50kg of nitrogen oxide as well as carbon dioxide, carbon monoxide and sulphur oxide.

根据飞机大小的不同，单程航线燃烧的燃料产生8 - 50千克的氮氧化物，以及二氧化碳、一氧化碳和硫氧化物。

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Burning ethanol also releases large quantities of nitrogen oxide (smog) that causes respiratory disease.

FORBES: Biofuels: Fields Of Pipedreams

The largest problem is the dangerous amount of nitrogen oxide (which mixes with vehicle-exhaust gas to create ozone, and then smog) coughed out by the state's industrial plants.

ECONOMIST: The Lone Smog State

He was made aware of the concerns by a Cotswold councillor asking what could be done about high levels of nitrogen oxide (NO2) in the area off the A417.

BBC: Google