홈 > Term: parts per million (PPM)
parts per million (PPM)
(i) The concentration of solutions expressed in weight or mass units of solute (dissolved substance) per million weight or mass units of solution. (ii) A concentration in solids expressed in weight or mass units of a substance contained per million weight or mass units of solid, such as soil.
- 품사: noun
- 분야/도메인: 지구과학
- 카테고리: 토양학
- Company: Soil Science Society of America
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