This method is used for the determination of copper as dust and fumes. The sample is collected on cellulose ester membrane filters, ashed in concentrated nitric acid @ 140 °C, followed by concentrated hydrochloric acid at 400 °C, and then analyzed by flame atomic absorption. The working range is 0.05 to 1.3 mg/m³ for a 100 L air sample. This is an elemental analysis, applicable to either dust or fumes, with an additional separation step to quantitate soluble copper dust (e.g., copper sulfate) in the presence of copper fume. Aliquots of samples can be analyzed separately for many additional metals. NOTE: This method combines and replaces P&CAM 173, S354, S186. Method 7300, plasma emission ( ICP-AES) is an alternate analytical technique.
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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 - 1500L @ 1 to 3 L/min. |
| Analytical Methodology: | Flame Atomic Absorption. |
| Documentation: | 
7029
|
| Analyte | Formula | CAS Number | Detection Limit | |
|---|---|---|---|---|
| Copper | Cu |
7440-50-8 |
0.05 |
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.