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Colombian Water Quality Standard NTC 3362 by ScribdTranslations is a document available to read on EtoBox.
The standard establishes methods for determining the presence of oils, fats, and substances soluble in organic solvents in water samples. The gravimetric partition method involves the extraction of these substances from water by shaking with an organic solvent such as hexane. The aqueous and organic phases are then separated, and the solvent is evaporated to determine the mass of extracted substances. Procedures for handling emulsions and recovering solvents are also described.
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