This method is for the determination of phenol and all isomers of cresol. The analytes are collected on an XAD-7 sampling tube and desorbed with methanol. The analysis is performed by HPLC with ultraviolet (UV) detection at 218 nm.
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| Hold Times, Preservatives, Preps, Collection, Analytical & Documentation | |
|---|---|
| Holding Time: | Rrecoveries of all analytes were >96% after 15 days storage at ambient and refrigerated temperatures. |
| Preservatives: | Store samples at refrigerated or ambient temperatures. |
| Required Preps: | XAD-7 tube, 100mg/50mg (SKC 226-95) |
| Collection Method: | The method recommends a flow rate of 0.1 L/min. and a 24L collection volume. |
| Analytical Methodology: | HPLC/UV |
| Documentation: | 
032
|
| Analyte | Formula | CAS Number | Detection Limit | |
|---|---|---|---|---|
| p-Cresol | C7H8O |
106-44-5 |
1.1 |
µg |
| m-Cresol | C7H8O |
108-39-4 |
1.1 |
µg |
| Phenol | C6H6O |
108-95-2 |
0.97 |
µg |
| o-Cresol | C7H8O |
95-48-7 |
1.1 |
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.