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Micrograms per Liter (μg/L) (Environmental Glossary)

Micrograms per Liter (μg/L) : A unit of measurement that expresses a concentration that is the mass (weight) of one material dissolved into a volume of another material. A microgram (μg) is a metric unit of mass which is equivalent to 0.0000000022 pounds. A liter is a metric unit of volume which is approximately equivalent to a quart. Also, 1 μg/L is equivalent to 1 part per billion (ppb).

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