This method is used for the determination of barium soluble compounds by flame atomic absorption. The sample is collected on cellulose ester membrane filters, extracted by hot water leaching method (twice), followed by concentrated hydrochloric acid and evaporate to dryness. The working range is 0.13 to 10 mg/m³ for a 200 L air sample. This method determines barium in water soluble barium compounds. Insoluble barium compounds (e.g., barium sulfate) require and ashing procedure. NOTE: This revises Method S198.
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| Hold Times, Preservatives, Preps, Collection, Analytical & Documentation | |
|---|---|
| Holding Time: | Stable |
| Preservatives: | Stable |
| Required Preps: | Cellulose ester membrane filter (0.8µm pore size). |
| Collection Method: | Filter: 50L - 200L @ 1 to 4 L/min. |
| Analytical Methodology: | Flame Atomic Absorption. |
| Documentation: | 
7056
|
| Analyte | Formula | CAS Number | Detection Limit | |
|---|---|---|---|---|
| Barium | Ba |
7440-39-3 |
2 |
µg |
* 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.