This method is used for the determination of Iodine. The sample is collected on alkali-treated charcoal sorbent tubes, desorbed with sodium carbonate, and analyzed by ion chromatography. The working range is 0.05 to 5 ppm (0.5 to 50 mg/m³) for a 15 L air sample. The method is applicable to 15-min ceiling measurements. NOTE: Better sensitivity (ppb range) has been found using amperometric detection.
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| Hold Times, Preservatives, Preps, Collection, Analytical & Documentation | |
|---|---|
| Holding Time: | 8 days @ 25 °C |
| Preservatives: | 25 °C |
| Required Preps: | Solid sorbent tube (alkali-treated charcoal, 100mg/50mg) 7cm x 6mm OD x 4mm ID. |
| Collection Method: | Solid sorbent tube: 15L to 225 L @ 0.5 to 1L/min. |
| Analytical Methodology: | Ion Chromatography |
| Documentation: | 
6005
|
| Analyte | Formula | CAS Number | Detection Limit | |
|---|---|---|---|---|
| Iodine | I2 |
7553-56-2 |
1 |
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.