Pigment | Substrate (determined by FTIR) | FORS features | ||||
---|---|---|---|---|---|---|
λshoulder (nm) | λabs,1 (nm) | λabs,2 (nm) | 1st inflection point (nm) | 2nd inflection point (nm) | ||
C-Std M-R | Alumina, SO42− | ~ 495 | 530 ± 3 | 557 ± 1 | 500 ± 0 | 540 ± 1 |
C-Std M-Ca excess | CaCO3, alumina | ~ 496 | 529 ± 2 | 560 ± 2 | 500 ± 0 | 540 ± 3 |
C-Std M-Ca | CaCO3 | ~ 497 | 530 ± 2 | 561 ± 1 | 501 ± 1 | 540 ± 2 |
C-Std M | Alumina, SO42− | ~ 495 | 531 ± 2 | 559 ± 2 | 500 ± 0 | 540 ± 2 |
C-Std M-Al ex. | Alumina, SO42−, CO32− | ~ 494 | 530 ± 2 | 558 ± 2 | 499 ± 1 | 539 ± 1 |
C-Silk | Alumina, SO42−, CO32− | ~ 496 | 528 ± 2 | 559 ± 1 | 500 ± 1 | 539 ± 2 |
C-Fleece | Proteins, alumina, SO42− | ~ 497 | 529 ± 3 | 558 ± 2 | 502 ± 3 | 537 ± 1 |
C-Sn | Sn salt or complex | ~ 485 | 520 ± 0 | 555 ± 1 | 501 ± 2 | 535 ± 1 |
C-Al | Al salt or complex | ~ 493 | 538 ± 3 | 574 ± 3 | 503 ± 3 | 545 ± 2 |
DYE15046a | Al salt or complex | ~ 489 | 523 ± 1 | 562 ± 2 | 496 ± 1 | 533 ± 1 |
DYE15047a | Al salt or complex | ~ 489 | 526 ± 0 | 562 ± 1 | 500 ± 1 | 537 ± 2 |
M-Std | Alumina, SO42− | ~ 481 | 509 ± 3 | ~ 548 (sh) | 490 ± 2 | 524 ± 1 |
M-Std-R | Alumina, SO42−, CO32− | ~ 469 | 500 ± 5 | ~ 545 (sh) | ~ 488 (sh) | 522 ± 1 |
M-Std-Al ex. | Alumina, CO32− | ~ 475 | 500 ± 2 | ~ 538 (sh) | ~ 486 (sh) | 520 ± 2 |
M-Std-Ca | CaCO3, alumina | ~ 476 | 506 ± 0 | − ~ 545 (sh) | 487 ± 0 | 524 ± 0 |
M-Std-Ca excess | CaCO3, alumina | nd | 480 ± 5 (broad) | ~ 543 (sh) | ~ 487 (sh) | ~ 523 (sh) |
M-Silk | Alumina, SO42−, CO32− | ~ 478 (or maximum, if present) | ~502 (sh) | ~ 541 (sh, if present) | ~ 486 (sh) | 524 ± 2 |
M-Fleece | Proteins, alumina, SO24 | ~ 478 | 505 ± 3 | ~ 542 (sh) | 488 ± 1 | 523 ± 1 |