Characterization of the cross-lamellar structure of Olivancillaria urceus (Gastropoda: Olividae) and its dissolution pattern
Autor(a) principal: | |
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Data de Publicação: | 2023 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1016/j.micron.2023.103416 http://hdl.handle.net/11449/246688 |
Resumo: | In this work, we sought to characterize the cross-lamellar microstructure of the gastropod Olivancillaria urceus (Röding, 1798) and its profile after immersion in acid medium. For crystallographic analysis, segments of the valve were removed and crushed. The powder obtained was analyzed using Fourier Transform Infrared Spectroscopy with Attenuated Total Reflectance (FTIR-ATR) and X-ray Diffractometry (XRD) techniques. For microstructural analysis, eight sections were taken from the shell using a rotary saw. The face of interest of each section was polished with Saint Gobain silicon carbide abrasive powder with mesh sizes of 320, 500, 600, and 1000. The eight sections were divided into four groups of two samples. Three groups were left in 4 % glacial acetic acid solution diluted in water for intervals of 20, 40, and 60 min, respectively, and the control group was not degraded. All wafers were then analyzed in Scanning Electron Microscopy to ascertain the microstructure. The angle and thickness of the layers were determined by Image J software. As a result of the FTIR-ATR technique, a transmittance spectrum was obtained whose valleys represent the vibrational modes of the carbonate ion. The diffractogram peaks and their respective Miller indices, are characteristic of the aragonite crystallographic structure and a small fraction of calcite. The micrographs obtained exposed 3 layers of cross-lamellar microstructure, however, the third and innermost layer showed discontinuity. The angle and average thickness were (105 ± 2)° and (727 ± 5)µm for the outermost layer and (116 ± 3)° and (668 ± 6)µm for the middle layer. The tablets immersed in acid medium showed loss of orientation of the calcium carbonate grains after 40 min and 60 min. Thus, the O. urceus shell exhibits orthorhombic calcium carbonate crystallography. Three layers of cross-lamellar microstructure were identified, as well as the configuration of the structure after contact with corrosive media. These results contribute to the characterization of natural materials and serve as a basis for analysis of the preservation potential in the fossil record. |
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Characterization of the cross-lamellar structure of Olivancillaria urceus (Gastropoda: Olividae) and its dissolution patternCrossed-lamellarGastropodsInfrared spectroscopyMollusksSEM analysisShell microstructuresX-ray diffractionIn this work, we sought to characterize the cross-lamellar microstructure of the gastropod Olivancillaria urceus (Röding, 1798) and its profile after immersion in acid medium. For crystallographic analysis, segments of the valve were removed and crushed. The powder obtained was analyzed using Fourier Transform Infrared Spectroscopy with Attenuated Total Reflectance (FTIR-ATR) and X-ray Diffractometry (XRD) techniques. For microstructural analysis, eight sections were taken from the shell using a rotary saw. The face of interest of each section was polished with Saint Gobain silicon carbide abrasive powder with mesh sizes of 320, 500, 600, and 1000. The eight sections were divided into four groups of two samples. Three groups were left in 4 % glacial acetic acid solution diluted in water for intervals of 20, 40, and 60 min, respectively, and the control group was not degraded. All wafers were then analyzed in Scanning Electron Microscopy to ascertain the microstructure. The angle and thickness of the layers were determined by Image J software. As a result of the FTIR-ATR technique, a transmittance spectrum was obtained whose valleys represent the vibrational modes of the carbonate ion. The diffractogram peaks and their respective Miller indices, are characteristic of the aragonite crystallographic structure and a small fraction of calcite. The micrographs obtained exposed 3 layers of cross-lamellar microstructure, however, the third and innermost layer showed discontinuity. The angle and average thickness were (105 ± 2)° and (727 ± 5)µm for the outermost layer and (116 ± 3)° and (668 ± 6)µm for the middle layer. The tablets immersed in acid medium showed loss of orientation of the calcium carbonate grains after 40 min and 60 min. Thus, the O. urceus shell exhibits orthorhombic calcium carbonate crystallography. Three layers of cross-lamellar microstructure were identified, as well as the configuration of the structure after contact with corrosive media. These results contribute to the characterization of natural materials and serve as a basis for analysis of the preservation potential in the fossil record.Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Faculdade de Ciências Universidade Estadual Paulista Júlio de Mesquita Filho Av. Eng. Luiz Edmundo Carrijo Coube, SPFaculdade de Ciências Integradas do Pontal Universidade Federal de Uberlândia, Rua Vinte, MGFaculdade de Ciências Universidade Estadual Paulista Júlio de Mesquita Filho Av. Eng. Luiz Edmundo Carrijo Coube, SPFAPESP: 2020/06646-3FAPESP: 2022/07461-2Universidade Estadual Paulista (UNESP)Universidade Federal de Uberlândia (UFU)Limeira Jr, Silvio C.M. [UNESP]Rodrigues, Sabrina C.Ghilardi, Renato P. [UNESP]2023-07-29T12:47:43Z2023-07-29T12:47:43Z2023-03-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.1016/j.micron.2023.103416Micron, v. 166.0968-4328http://hdl.handle.net/11449/24668810.1016/j.micron.2023.1034162-s2.0-85146659523Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengMicroninfo:eu-repo/semantics/openAccess2023-07-29T12:47:43Zoai:repositorio.unesp.br:11449/246688Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T21:44:10.275162Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Characterization of the cross-lamellar structure of Olivancillaria urceus (Gastropoda: Olividae) and its dissolution pattern |
title |
Characterization of the cross-lamellar structure of Olivancillaria urceus (Gastropoda: Olividae) and its dissolution pattern |
spellingShingle |
Characterization of the cross-lamellar structure of Olivancillaria urceus (Gastropoda: Olividae) and its dissolution pattern Limeira Jr, Silvio C.M. [UNESP] Crossed-lamellar Gastropods Infrared spectroscopy Mollusks SEM analysis Shell microstructures X-ray diffraction |
title_short |
Characterization of the cross-lamellar structure of Olivancillaria urceus (Gastropoda: Olividae) and its dissolution pattern |
title_full |
Characterization of the cross-lamellar structure of Olivancillaria urceus (Gastropoda: Olividae) and its dissolution pattern |
title_fullStr |
Characterization of the cross-lamellar structure of Olivancillaria urceus (Gastropoda: Olividae) and its dissolution pattern |
title_full_unstemmed |
Characterization of the cross-lamellar structure of Olivancillaria urceus (Gastropoda: Olividae) and its dissolution pattern |
title_sort |
Characterization of the cross-lamellar structure of Olivancillaria urceus (Gastropoda: Olividae) and its dissolution pattern |
author |
Limeira Jr, Silvio C.M. [UNESP] |
author_facet |
Limeira Jr, Silvio C.M. [UNESP] Rodrigues, Sabrina C. Ghilardi, Renato P. [UNESP] |
author_role |
author |
author2 |
Rodrigues, Sabrina C. Ghilardi, Renato P. [UNESP] |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (UNESP) Universidade Federal de Uberlândia (UFU) |
dc.contributor.author.fl_str_mv |
Limeira Jr, Silvio C.M. [UNESP] Rodrigues, Sabrina C. Ghilardi, Renato P. [UNESP] |
dc.subject.por.fl_str_mv |
Crossed-lamellar Gastropods Infrared spectroscopy Mollusks SEM analysis Shell microstructures X-ray diffraction |
topic |
Crossed-lamellar Gastropods Infrared spectroscopy Mollusks SEM analysis Shell microstructures X-ray diffraction |
description |
In this work, we sought to characterize the cross-lamellar microstructure of the gastropod Olivancillaria urceus (Röding, 1798) and its profile after immersion in acid medium. For crystallographic analysis, segments of the valve were removed and crushed. The powder obtained was analyzed using Fourier Transform Infrared Spectroscopy with Attenuated Total Reflectance (FTIR-ATR) and X-ray Diffractometry (XRD) techniques. For microstructural analysis, eight sections were taken from the shell using a rotary saw. The face of interest of each section was polished with Saint Gobain silicon carbide abrasive powder with mesh sizes of 320, 500, 600, and 1000. The eight sections were divided into four groups of two samples. Three groups were left in 4 % glacial acetic acid solution diluted in water for intervals of 20, 40, and 60 min, respectively, and the control group was not degraded. All wafers were then analyzed in Scanning Electron Microscopy to ascertain the microstructure. The angle and thickness of the layers were determined by Image J software. As a result of the FTIR-ATR technique, a transmittance spectrum was obtained whose valleys represent the vibrational modes of the carbonate ion. The diffractogram peaks and their respective Miller indices, are characteristic of the aragonite crystallographic structure and a small fraction of calcite. The micrographs obtained exposed 3 layers of cross-lamellar microstructure, however, the third and innermost layer showed discontinuity. The angle and average thickness were (105 ± 2)° and (727 ± 5)µm for the outermost layer and (116 ± 3)° and (668 ± 6)µm for the middle layer. The tablets immersed in acid medium showed loss of orientation of the calcium carbonate grains after 40 min and 60 min. Thus, the O. urceus shell exhibits orthorhombic calcium carbonate crystallography. Three layers of cross-lamellar microstructure were identified, as well as the configuration of the structure after contact with corrosive media. These results contribute to the characterization of natural materials and serve as a basis for analysis of the preservation potential in the fossil record. |
publishDate |
2023 |
dc.date.none.fl_str_mv |
2023-07-29T12:47:43Z 2023-07-29T12:47:43Z 2023-03-01 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1016/j.micron.2023.103416 Micron, v. 166. 0968-4328 http://hdl.handle.net/11449/246688 10.1016/j.micron.2023.103416 2-s2.0-85146659523 |
url |
http://dx.doi.org/10.1016/j.micron.2023.103416 http://hdl.handle.net/11449/246688 |
identifier_str_mv |
Micron, v. 166. 0968-4328 10.1016/j.micron.2023.103416 2-s2.0-85146659523 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Micron |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
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1808129352313864192 |