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Table 5 Raman microspectroscopy data of standard frescoes fabricated using standard black pigments and the considered unknown black pigment (i.e. black-ivory-(VS)).

From: Characterization of black pigment used in 30 BC fresco wall paint using instrumental methods and chemometry

Identification of characteristic Raman peaks

 

[cm-1]

[cm-1]

Black-Ivory

Experimental

1346 m

1594 s

Bibliographic reference (1)

1354 s

1609 s

Black-Carbon P

Experimental

1337 s

1587 s

Bibliographic reference (1)

1320 s

1595 s

Black-Carbon Z

Experimental

1338 s

1590 s

Bibliographic reference (1)

1320 s

1595 s

Black-Vine

Experimental

-

1580 s

Bibliographic reference (1)

1350 w

1573 s

Black-Ivory VS

Experimental

1349 s

1588 s

Bibliographic reference (1)

-

-

  1. LEGEND: s = strong signal, m = medium signal, w = weak signal
  2. (1)Values reported by University of Florence. Relative acquisitions were obtained with laser line x=514.5 nm, lens 100x, time of acquisition 100”, resolution 7 cm-1.
  3. We effected our measures with an instrument Lab Ram Infinity by Jobin Yvon Horiba Group, laser He-Ne (λ=632.8 nm), filter D06, hole100, grid 1800 strips/mm, resolution 3 cm-1, acquisition 5x60”
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BMC Chemistry

ISSN: 2661-801X

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