USGS-NWQL: I-1095: Beryllium, dissolved, water, FLAA
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Official Method Name
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Beryllium, atomic absorption spectrometric, direct |
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Current Revision
| Revised 1985 |
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Media
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WATER |
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Instrumentation
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Flame Atomic Absorption |
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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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Beryllium is determined by atomic absorption spectrometry. Calcium chloride is added to control ionization of beryllium in the flame. |
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Scope and Application
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This method may be used to analyze water and water-suspended sediment containing at least 10 ug/L of beryllium. Sample solutions containing more than 200 ug/L need to be diluted. |
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Applicable Concentration Range
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10-200 ug/L |
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Interferences
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Beryllium is slightly ionized in the nitrous oxide-acetylene flame; to control this effect, calcium chloride solution must be added to each standard and sample. Bicarbonate ion interferes; however, this interference is of no consequence if samples preserved by the addition of acid are used for the analysis. Aluminum at concentrations greater than 500 ug/L has been reported to depress the beryllium absorbance. Sodium and silicon at concentrations in excess of 1000 mg/L have been reported to severely depress the beryllium absorbance (Environmental Protection Agency, 1979). |
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Quality Control Requirements
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Calibrate instrument using calibration standards (CAL). Quality control samples (QCS) and laboratory blanks (LB) analyzed at a minimum of I each after every 10 samples. (Reference OFR 95-443). |
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Sample Handling
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Container Description: 250 mL Polyethylene bottle, acid-rinsed. Treatment and Preservation: Filter through 0.45-um filter, use filtered sample to rinse containers and acidify sample with HNO3 to pH < 2. |
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Maximum Holding Time
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180 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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