TRI National Analysis

Air Releases by Chemical in the 2015 TRI National Analysis

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This pie chart shows which toxic chemicals were released to air in the greatest quantities in 2015.

  • Air releases of ammonia are largely due to the manufacture of nitrogen fertilizers in the chemicals industry and have remained relatively constant since 2005.
  • Air releases of methanol are primarily from pulp and paper mills and have decreased by 31% since 2005.
  • The majority of air releases of hydrochloric acid and sulfuric acid result from generating electricity from fossil fuels. Air releases of these two chemicals have decreased consistently since 2005.

This page was published in January 2017 and uses the 2015 TRI National Analysis dataset made public in TRI Explorer in October 2016.

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