Table 2.
Number of Applications | Procedure Performed | ZEN (%) in the Buffer (A) or the Eluent (B, C) | ∑ (%) |
---|---|---|---|
1st application of the polymer | A: After extraction with BBP | 8.0 ± 0.3 | 99.8 |
B: After the 1st elution | 85.8 ± 1.6 | ||
C: After the 2nd elution | 6.0 ± 0.7 | ||
2nd application of the polymer | A: After extraction with BBP | 7.1 ± 0.2 | 98.3 |
B: After the 1st elution | 84.8 ± 1.5 | ||
C: After the 2nd elution | 6.4 ± 0.8 | ||
3rd application of the polymer | A: After extraction with BBP | 7.4 ± 0.4 | - |
A: Percent of ZEN (10 μM) remaining in 1.5 mL sodium acetate buffer (pH 5.0), after its incubation with 10 mg BBP for 40 min at 25 °C. B: Percent of ZEN recovered in the ethanol-water mixture, after the first elution from the polymer with 1.5 mL 50 v/v% ethanol for 10 min at 25 °C. C: Percent of ZEN recovered in the ethanol-water mixture, after the second elution from the polymer with 1.5 mL 50 v/v% ethanol for 10 min at 25 °C.