USGS-NWQL: I-1312: Density, dissolved, water by gravimetry
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Official Method Name
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Density, gravimetric |
|---|---|
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Current Revision
| 1985 |
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Media
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WATER |
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Instrumentation
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Gravimetry |
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Method Subcategory
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Inorganic |
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Method Source
|
|
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Citation
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Methods for the Determination of Inorganic Substances in Water and Fluvial Sediments, Techniques of Water-Resources Investigations of the United States Geological Survey, Book 5, Chapter A1 Edited by Marvin J. Fishman and Linda C. Friedman |
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Brief Method Summary
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The density determination is based on the weight of a carefully measured volume of filtered sample at a given temperature. Densities are determined at 20oC, the same temperature at which volumetric glassware is calibrated. |
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Scope and Application
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This method may be used to determine the density of any water from which the suspended sediment has been satisfactorily removed. |
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Applicable Concentration Range
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None Provided. |
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Interferences
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The only significant interference with this method is suspended sediment, which may usually be removed by filtration, centrifugation, or flocculation. Precautions should be taken to minimize evaporation during removal of sediment. |
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Quality Control Requirements
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None. |
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Sample Handling
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Container Description: 250 mL Polyethylene bottle. Treatment and Preservation: Filter through 0.45-um filter; using filtered sample to rinse containers. |
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Maximum Holding Time
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180 days |
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Relative Cost
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Unknown |
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Sample Preparation Methods
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