Standard Methods: 4500-F- E: Fluoride by Complexone
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Official Method Name
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4500-F- E. Complexone Method |
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Current Revision
| Standard Methods Online |
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Media
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WATER |
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Instrumentation
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Automated Spectrophotometer |
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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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The sample is distilled in the automated system, and the distillate is reacted with alizarin fluorine blue-lanthanum reagent to form a blue complex that is measured colorimetrically at 620 nm. |
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Scope and Application
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This method is applicable to potable, surface, and saline waters as well as domestic and industrial wastewaters. |
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Applicable Concentration Range
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0.1 to 2.0 mg-F-/L |
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Interferences
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Interferences normally associated with the determination of fluoride are removed by distillation. |
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Quality Control Requirements
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See Section 4020 Quality Control/Quality Assurance. |
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Sample Handling
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Preferably use polyethylene bottles for collecting and storing samples for fluoride analysis. Glass bottles are satisfactory if previously they have not contained high-fluoride solutions. Always rinse bottle with a portion of sample. |
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Maximum Holding Time
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28 days (See Section 1060) |
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Relative Cost
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Less than $50 |
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Sample Preparation Methods
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Section 4500-F- B |
