Sample designation | P1 | P2 | ||||||
---|---|---|---|---|---|---|---|---|
After deacidification treatment | After accelerated degradation | After deacidification treatment | After accelerated degradation | |||||
pH | SD | pH | SD | pH | SD | pH | SD | |
U | 4.8 | 0.2 | 4.7 | 0.1 | 6.0 | 0.1 | 6.0 | 0.1 |
CS E | 9.4 | 0.2 | 7.7 | 0.1 | 10.2 | 0.1 | 8.3 | 0.1 |
CS iP | 10.2 | 0.3 | 8.0 | 0.1 | 10.3 | 0.1 | 8.3 | 0.1 |
NR E | 9.1 | 0.1 | 6.9 | 0.1 | 9.7 | 0.1 | 7.9 | 0.1 |
NR iP | 9.3 | 0.1 | 6.8 | 0.1 | 9.7 | 0.1 | 7.9 | 0.1 |
C E | 7.9 | 0.1 | 7.6 | 0.1 | 8.6 | 0.1 | 7.8 | 0.1 |
C iP | 7.8 | 0.1 | 7.6 | 0.1 | 8.4 | 0.1 | 7.7 | 0.1 |