USGS-NWQL: I-3765: Solids, residue at 105 degrees C, suspended, gravimetric
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Official Method Name
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Solids, residue at 105 degrees C, suspended, 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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Suspended solids are those that are retained on a glass-fiber filter. The determined value is fairly representative of the sample but does not accurately represent the suspended sediment concentration of a stream; suspended solids values should not be confused with sediment concentration, which is the more accurate measure of material in suspension. The unfiltered sample is mixed thoroughly and an appropriate volume is rapidly poured into a graduated cylinder. The suspended solids are collected on a glass fiber filter, and the insoluble residue is dried and weighed. |
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Scope and Application
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This method may be used to determine the suspended-solids concentration of any natural or treated water or industrial waste. |
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Applicable Concentration Range
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NA |
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Interferences
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Precipitation in the sample during storage, such as iron, will produce erroneously high results. |
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Quality Control Requirements
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Laboratory Blanks (LB) |
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Sample Handling
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Container Description: 250 or 500 mL polyethylene bottle. Handling and Treatment: Use unfiltered sample to rinse bottle. |
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Maximum Holding Time
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NA |
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Relative Cost
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Less than $50 |
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Sample Preparation Methods
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