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parts per million (ppm)

Number of parts of a chemical found in 1 million parts of a particular gas, liquid, or solid.

Subject: 
Environmental Science [1]
Vocabulary: 
Chapter 11 - Risk, Toxicology, and Human Health [2]
Source URL:https://course-notes.org/glossary/term/parts_per_million_ppm_1#comment-0

Links
[1] https://course-notes.org/subject/environmental_science [2] https://course-notes.org/vocabulary/chapter_11_risk