Skalar's most recent development is the implementation of a new type of flow cell in the San++ which increases the sensitivity for the automated procedure of Phenol analysis considerably.
Extremely low concentrations of a.o. Total Phenol in all kinds of aqueous samples can be measured. This increased sensitivity is achieved due to the flow cell having an optical pathlength of 100 cm.
Skalar's procedure for Total Phenol analysis is in accordance with ISO method 14402, determination of phenol index (without extraction) after distillation. The colorimetric principle is based on a reaction with 4-amino-2,3-dimethyl-1-phenyl-3-pyrazolin-5-one forming yellow condensation products which are measured at 505 nm.
Typical performance data and analysis results of Skalar's Total Phenol application on the San++ analyzer using the new type of flow cell can be found in the table and graphs below.
| San++ analysis data | Total Phenols |
|---|---|
| Ranges | 0.2 - 20 µg/l |
| Minimum Detection Limit (MDL) | 0.119 µg/l |
| RSD (%) | 0.001% |
| Regression (r) | 0.99995 |
| ResultID | Position | SampleType | SampleIdentity | Phenol-Results (µg/l) |
|---|---|---|---|---|
| 0 | IW | IW | InitialWash | -0.01 |
| 1 | A12 | T | Trace | 19.62 |
| 2 | WI | WI | WashIgnore | 0.64 |
| 3 | A1 | S1 | 0.00 µg Phenol/L | 0.03 |
| 4 | A2 | S2 | 0.25 µg Phenol/L | 0.32 |
| 5 | A3 | S3 | 0.50 µg Phenol/L | 0.50 |
| 6 | A4 | S4 | 1.00 µg Phenol/L | 0.90 |
| 7 | A5 | S5 | 2.00 µg Phenol/L | 1.94 |
| 8 | A6 | S6 | 4.00 µg Phenol/L | 3.94 |
| 9 | A7 | S7 | 6.00 µg Phenol/L | 6.09 |
| 10 | A8 | S8 | 10.00 µg Phenol/L | 9.96 |
| 11 | A9 | S9 | 12.50 µg Phenol/L | 12.60 |
| 12 | A10 | S10 | 15.00 µg Phenol/L | 15.03 |
| 13 | A11 | S11 | 17.50 µg Phenol/L | 17.54 |
| 14 | A12 | S12 | 20.00 µg Phenol/L | 19.90 |
| 15 | A11 | D | Drift | 17.49 |
| 16 | WT | W | Wash | 0.01 |
Total Phenol calibration (up to 20 µg/l)
Total Phenol calibration curve (up to 20 µg/l)
Skalar's San++ continuous flow analyzer is the ultimate solution for determining highly accurate extremely low levels of phenol and other parameters in large sample series at a high analysis frequency.
If you require more information on this Total Phenol application or other Skalar analyzers & applications, please do not hesitate to contact us.