Tentatively assignation | Z-N FTIR bands | Z-H+ FTIR bands | Z-NH4+ FTIR bands | Z-250 FTIR bands | Z-500 FTIR bands |
ν OH | 3424 | 3436 | 3458 | 3469 | 3462 |
ν N-H |
| 3230 | 3240 | 3242 |
|
δ H2O | 1632 | 1633 | 1632 | 1639 | 1635 |
δ NO3 |
| 1384 |
|
| 1383 |
δ NH4 |
|
| 1401 |
|
|
(a) νaT-O-T | 1206 | 1206 | 1207 | 1200 | 1158 |
(b)νaT-O-T | 1053 | 1080 | 1053 | 1061 | 1062 |
νsSi-OH |
| 955 |
|
|
|
(a)νsT-O-T | 787 | 794 | 793 | 786 | 789 |
(b)νsT-O-T | 607 | 608 | 608 | 606 | 609 |
Network modes: “ring elongation” | 453 | 463 | 452 | 454 | 458 |