This method is used for the determination of alkalinity and 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. 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.
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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| Hold Times, Preservatives, Preps, Collection, Analytical & Documentation | |
|---|---|
| Holding Time: | The sample should be run as soon as practical. |
| Preservatives: | The sample should be refrigerated at 4°C. |
| Required Preps: | 100 mL amber glass bottle |
| Collection Method: | Grab sampling |
| Analytical Methodology: | Titration |
| Documentation: | 
310.1
|
| Analyte | Formula | CAS Number | Detection Limit | |
|---|---|---|---|---|
| Alkalinity, Total | ||||
* The analytes and detection limits listed for each method represent the typical detection limits and analytes reported for that particular method. Keep in mind that analyte lists may vary from laboratory to laboratory. Detection limits may also vary from lab to lab and are dependent upon the sample size, matrix, and any interferences that may be present in the sample.