NEMI Method Summary

Method Summary Information

Method Number: D857 Media: WATER
Revision: 1995
Method Source: ASTM International
Subcategory: INORGANIC Analytes in this method
Official Name: Standard Test Method for Aluminum in Water
Descriptive Name Aluminum by FLAA
Source Info: ASTM International
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Citation: ASTM Volume 11.01
 
Brief Method
Summary:
 Aluminum is determined by direct atomic absorption with only the addition of an ionization suppressor and sensitivity enhancer (optional).
Scope And
Application:
 This test method covers the direct flame atomic absorption determination of aluminum in the nitrous oxide-acetylene flame. This test method is applicable to waters containing dissolved and total recoverable aluminum in the range from 0.5 to 5.0 mg/L. Aluminum concentrations as high as approximately 50 mg/L can be determined using this test method without dilution. However, no precision and bias data are available for concentrations greater than 5.0 mg/L. This test method was tested on reagent, natural, and potable waters. It is the user's responsibility to ensure the validity of this test method for waters of untested matrices.
Applicable
Conc Range:
 0.5 - 5.0 mg/L
Interferences: Aluminum ionizes slightly in the nitrous oxide-acetylene flame, but the addition of sodium chloride described in this test method suppresses this interference. By this technique, a maximum concentration of 9000 mg/L sodium, 9000 mg/L potassium, 4000 mg/L calcium, 4000 mg/L magnesium, 9000 mg/L sulfate, 9000 mg/L chloride, 9000 mg/L nitrate, and 9000 mg/L iron may be tolerated.
QC Requirements:
Sample Handling: Collect samples in accordance with Practices D 1066 or D 3370, as applicable. For dissolved aluminum, filter the samples at the time of collection through a 0.45-um filter. Acidify the filtrate to pH 2 or less with nitric acid. For total recoverable aluminum, acidify the unfiltered sample to pH 2 or less at the time of collection.
Max Holding Time:
 The holding time for samples may be calculated in accordance with Practice D 4841.
 
Relative Cost: Unknown
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