pollutant noun
ADJ. air, atmospheric, environmental, water | chemical, toxic | major | industrial
VERB + POLLUTANT discharge, emit, release
POLLUTANT + NOUN emission
PREP. ~ from pollutants from nearby industries | ~ in pollutants in exhaust gases
PHRASES the emission/release of pollutants
You can also check other dicts: pollutant (English, 中文解释 ), wordnet sense, Collins Definition