This method is for the collection and analysis of cresols (all isomers) and phenol. Samples are collected on XAD-7 tubes, desorbed with 2mL of methanol, and analyzed by GC/FID (flame ionization detector).
The working range of the method is 0.25 to 15 ppm (1 to 60 mg/m³) for cresols and phenol in a 20 L air sample.
NOTE: This method replaces NIOSH Methods 2001 (Cresols) and 3502 (Phenol).
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| Hold Times, Preservatives, Preps, Collection, Analytical & Documentation | |
|---|---|
| Holding Time: | The method says the samples are stable for at least one week if kept at 25°C. |
| Preservatives: | Store samples at 25°C. |
| Required Preps: | XAD-7 tube, 100mg/50mg (SKC 226-95) |
| Collection Method: | The method recommends a flow rate of 0.01 to 0.1 L/min. and a 1 to 24L sample collection volume. |
| Analytical Methodology: | GC/FID |
| Documentation: | 
2546
|
| Analyte | Formula | CAS Number | Detection Limit | |
|---|---|---|---|---|
| p-Cresol | C7H8O |
106-44-5 |
3 |
µg |
| m-Cresol | C7H8O |
108-39-4 |
3 |
µg |
| Phenol | C6H6O |
108-95-2 |
3 |
µg |
| Cresol (All Isomers) | 1319-77-3 |
3 |
µg | |
| o-Cresol | C7H8O |
95-48-7 |
3 |
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.