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The initial and total release of HACC in 60 h.
| Specimen | Total HACC Loaded (μg a/one disc) | Initial Release (μg b) | Total Release (μg) |
|---|---|---|---|
| NT-H80 | 1549 | 575 | 741 |
| NT-H120 | 1573 | 617 | 812 |
| NT-H160 | 1587 | 971 | 1080 |
| NT-H200 | 1603 | 1025 | 1178 |
Notes: a The amount of HACC retained in the nanotubes after the initial wash: 2 mg × η (the loading efficiency). b The amount of HACC released in the initial high-release period before the rate of HACC release became approximately constant.
