Standard Methods: 3111B: Metals in water by FLAA
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Official Method Name
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Direct Air-Acetylene Flame 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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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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Brief Method Summary
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In flame atomic absorption spectrometry, a sample is aspirated into a flame and atomized. A light beam is directed through the flame, into a monochromator, and onto a detector that measures the amount of light absorbed by the atomized element in the flame. |
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Scope and Application
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This method is applicable to the determination of antimony, bismuth, cadmium, calcium, cesium, chromium, cobalt, copper, gold, iridium, iron, lead, lithium, magnesium, manganese, nickel, palladium, platinum, potassium, rhodium, ruthenium, silver, sodium, strontium, thallium, tin, and zinc. |
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Applicable Concentration Range
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Interferences
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Most troublesome type of interference is termed "chemical" and results from the lack of absorption by atoms bound in molecular combination in the flame. |
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Quality Control Requirements
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To one sample out of every ten add a known amount of the metal of interest and reanalyze to confirm recovery. Analyze an additional standard solution after every ten samples or with a batch of samples, whichever is less, to confirm that the test is in control. |
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Sample Handling
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For dissolved metals, filter immediately, add HNO3 to pH < 2 If dissolved metals are to be determined, see 3030B for sample preparation. If total or acid-extractable metals are to be determined, see 3030C through 3030K. |
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Maximum Holding Time
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6 months |
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Relative Cost
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$201 to $400 |
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Sample Preparation Methods
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3030B - 3030K |
