The sources, kinds and the exchanging conditions of the nitrogen pollutants in water are related. This make the recognization of the nitrogen pollutant systematic and comprehensive.

叙述了水体中含氮类污染物的来源、种类、相互转化方式和条件、表征意义等，以便对水中氮类污染物有一个全面、 系统的认识。

youdao

These pollutants are called aerosols and they include soot as well as compounds of nitrogen and sulfur and other stuff into the air.

这些污染物被称为气溶胶，它们包括煤烟以及空气中氮、硫和其他物质的混合物。

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

It uses average yearly data in its computations, and focuses on only two major pollutants - nitrogen and phosphorous.

VOA: standard.2010.08.04

The 600-megawatt Indiana plant will convert coal into turbine-ready gas while stripping out pollutants nitrogen and sulfur.

FORBES: A Dirty Game

The new rules will require automakers to roll out passenger cars and trucks that will reduce smog-producing pollutants such as nitrogen oxides by 75 percent less from the 2014 levels.

FORBES: California Sets New Rules To Boost Zero-Emission Car Sales

The latter include health-damaging and smog-forming airborne pollutants like hydrocarbons, nitrogen oxide, particulate matter, carbon monoxide and formaldehyde, as well as greenhouse gases that contribute to climate change, like carbon dioxide, nitrous oxide, methane and other compounds.

FORBES: The 'Greenest' (And Meanest) Cars For 2013