EPA-NERL: 310.1: Alkalinity by Titration
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Official Method Name
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Alkalinity (Titrimetric, pH 4.5) |
|---|---|
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Current Revision
| Issued 1971; Editorial Revision 1978 |
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Media
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WATER |
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Instrumentation
|
Titration |
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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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Brief Method Summary
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An unaltered sample is titrated to an electrometrically determined end point of pH 4.5. The sample must not be filtered, diluted, concentrated, or altered in any way. |
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Scope and Application
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This method is applicable to drinking, surface, and saline waters; domestic and industrial wastes. The method is suitable for all concentration ranges of alkalinity; however appropriate aliquots should be used to avoid a titration volume greater than 50mL. |
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Applicable Concentration Range
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Not Available. |
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Interferences
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Substances, such as salts of weak organic and inorganic acids present in large amounts, may cause interference in the electrometric pH measurements. |
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Quality Control Requirements
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None. |
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Sample Handling
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The sample should be refrigerated at 4oC and run as soon as practical. Do not open sample bottle before analysis. |
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Maximum Holding Time
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14 days. |
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Relative Cost
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Less than $50 |
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Sample Preparation Methods
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None. |
