Análise de pinturas rupestres do Abrigo do Janelão (Minas Gerais) por microscopia raman
Rock art paintings from Abrigo do Janelão (Minas Gerais, Brazil) were non-destructively investigated by Raman Microscopy, aiming at the identification of materials used, their interaction and degradation. This technique is particularly tailored for heterogeneous samples and allows unequivocal identi...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Sociedade Brasileira de Química
2011-01-01
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| Series: | Química Nova |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422011000800012&lng=en&tlng=en |
| _version_ | 1818550183032520704 |
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| author | Dalva Lúcia A. de Faria Francisco N. Lopes Luiz Antônio Cruz Souza Helena David de Oliveira Castello Branco |
| author_facet | Dalva Lúcia A. de Faria Francisco N. Lopes Luiz Antônio Cruz Souza Helena David de Oliveira Castello Branco |
| author_sort | Dalva Lúcia A. de Faria |
| collection | DOAJ |
| description | Rock art paintings from Abrigo do Janelão (Minas Gerais, Brazil) were non-destructively investigated by Raman Microscopy, aiming at the identification of materials used, their interaction and degradation. This technique is particularly tailored for heterogeneous samples and allows unequivocal identification of the substances present in the investigated sample. Pigments, were identified together with products of microbiological degradation; no binders were detected. White pigment was identified as calcite (CaCO3), whereas charcoal was used as black, goethite (α-FeOOH) as yellow and hematite (α-Fe2O3) as red. Whewellite (CaC2O4.H2O) and weddelite (CaC2O4.2H2O) were detected and their origin was assigned to degradation products from microbiological activity. |
| first_indexed | 2024-12-12T08:43:03Z |
| format | Article |
| id | doaj.art-24d183c4c96749beb8f6ba8342e7a66d |
| institution | Directory Open Access Journal |
| issn | 1678-7064 |
| language | English |
| last_indexed | 2024-12-12T08:43:03Z |
| publishDate | 2011-01-01 |
| publisher | Sociedade Brasileira de Química |
| record_format | Article |
| series | Química Nova |
| spelling | doaj.art-24d183c4c96749beb8f6ba8342e7a66d2022-12-22T00:30:42ZengSociedade Brasileira de QuímicaQuímica Nova1678-70642011-01-013481358136410.1590/S0100-40422011000800012S0100-40422011000800012Análise de pinturas rupestres do Abrigo do Janelão (Minas Gerais) por microscopia ramanDalva Lúcia A. de Faria0Francisco N. Lopes1Luiz Antônio Cruz Souza2Helena David de Oliveira Castello Branco3Universidade de São PauloUniversidade de São PauloUniversidade Federal de Minas GeraisUniversidade Federal de Minas GeraisRock art paintings from Abrigo do Janelão (Minas Gerais, Brazil) were non-destructively investigated by Raman Microscopy, aiming at the identification of materials used, their interaction and degradation. This technique is particularly tailored for heterogeneous samples and allows unequivocal identification of the substances present in the investigated sample. Pigments, were identified together with products of microbiological degradation; no binders were detected. White pigment was identified as calcite (CaCO3), whereas charcoal was used as black, goethite (α-FeOOH) as yellow and hematite (α-Fe2O3) as red. Whewellite (CaC2O4.H2O) and weddelite (CaC2O4.2H2O) were detected and their origin was assigned to degradation products from microbiological activity.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422011000800012&lng=en&tlng=enrock artpigmentsRaman |
| spellingShingle | Dalva Lúcia A. de Faria Francisco N. Lopes Luiz Antônio Cruz Souza Helena David de Oliveira Castello Branco Análise de pinturas rupestres do Abrigo do Janelão (Minas Gerais) por microscopia raman Química Nova rock art pigments Raman |
| title | Análise de pinturas rupestres do Abrigo do Janelão (Minas Gerais) por microscopia raman |
| title_full | Análise de pinturas rupestres do Abrigo do Janelão (Minas Gerais) por microscopia raman |
| title_fullStr | Análise de pinturas rupestres do Abrigo do Janelão (Minas Gerais) por microscopia raman |
| title_full_unstemmed | Análise de pinturas rupestres do Abrigo do Janelão (Minas Gerais) por microscopia raman |
| title_short | Análise de pinturas rupestres do Abrigo do Janelão (Minas Gerais) por microscopia raman |
| title_sort | analise de pinturas rupestres do abrigo do janelao minas gerais por microscopia raman |
| topic | rock art pigments Raman |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422011000800012&lng=en&tlng=en |
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