scholarly journals In-situ non-destructive analysis of Etruscan gold jewels with the micro-XRF transportable spectrometer from CNA

2017 ◽  
Vol 16 ◽  
pp. 185-193 ◽  
Author(s):  
S. Scrivano ◽  
C. Ruberto ◽  
B. Gómez-Tubío ◽  
A. Mazzinghi ◽  
I. Ortega-Feliu ◽  
...  
Keyword(s):  
Destructive Analysis ◽  
Non Destructive

scholarly journals Integrated Interpretation of pXRF Data on Ancient Nephrite Artifacts Excavated from Tomb No.1 in Yuehe Town, Henan Province, China

2021 ◽  
Author(s):  
Dian Chen ◽  
Yimin Yang ◽  
Baotong Qiao ◽  
Jingpu Li ◽  
Wugan Luo
Keyword(s):  
Principal Component ◽  
Henan Province ◽  
Central China ◽  
Test Environment ◽  
Destructive Analysis ◽  
Elemental Data ◽  
Integrated Interpretation ◽  
Non Destructive ◽  
Mineral Identification

Abstract Previous studies of ancient jade using portable X-ray fluorescence (pXRF) have mostly focused on mineral identification, alteration status and provenance determination. It is usually used as an auxiliary instrument for spectroscopic detection with finer resolution. However, there is no substitute for the efficiency and stability of pXRF in-situ non-destructive analysis, which is less affected by the test environment. The scale of the data from the pXRF analysis did not allow for a more in-depth interpretation of ancient jade in the past. In this study, pXRF has been carried out for a total of 112 pieces of nephrite artifacts unearthed from the Yuehe tomb No.1 in Nanyang City, Henan Province, Central China. Certain patterns become clearer as the size of the data increases. The coefficient of variation, cluster analysis and correlation analysis can be used to separate elements into different assemblages, revealing whether the elements are from the primary and impurity minerals of nephrite itself, from the burial microenvironment in the soil, or even from other specific sources. In addition, most of the secondary whitening occurring in the batch of nephrite are accompanied by an increase in Ca content, confirming the previously refuted theory of calcification. More importantly, the principal component analysis of the twin nephrite artifacts suggests visually indistinguishable elemental changes caused by secondary changes, which may lead to misjudgment of ancient nephrite provenance using elemental data.

Researching Protected Geosites: In Situ and Non-Destructive Analysis of Mass-Extinction Bioevents

Geoheritage ◽  
2016 ◽  
Vol 8 (4) ◽  
pp. 351-357 ◽  
Author(s):  
F. J. Martín-Peinado ◽  
F. J. Rodríguez-Tovar
Keyword(s):  
Mass Extinction ◽  
Destructive Analysis ◽  
Non Destructive

scholarly journals Integrated interpretation of pXRF data on ancient nephrite artifacts excavated from Tomb No.1 in Yuehe Town, Henan Province, China

2022 ◽  
Vol 10 (1) ◽  
Author(s):  
Dian Chen ◽  
Yimin Yang ◽  
Baotong Qiao ◽  
Jingpu Li ◽  
Wugan Luo
Keyword(s):  
Principal Component ◽  
Henan Province ◽  
Central China ◽  
Test Environment ◽  
Destructive Analysis ◽  
Elemental Data ◽  
Integrated Interpretation ◽  
Non Destructive ◽  
Mineral Identification

AbstractPrevious studies of ancient jade using portable X-ray fluorescence (pXRF) have mostly focused on mineral identification, alteration status and provenance determination. It is usually used as an auxiliary instrument for spectroscopic detection with finer resolution. However, there is no substitute for the efficiency and stability of pXRF in-situ non-destructive analysis, which is less affected by the test environment. The scale of the data from the pXRF analysis did not allow for a more in-depth interpretation of ancient jade in the past. In this study, pXRF has been carried out for a total of 112 pieces of nephrite artifacts unearthed from the Yuehe tomb No.1 in Nanyang City, Henan Province, Central China. Certain patterns become clearer as the size of the data increases. The coefficient of variation, cluster analysis and correlation analysis can be used to separate elements into different assemblages, revealing whether the elements are from the primary and impurity minerals of nephrite itself, from the burial microenvironment in the soil, or even from other specific sources. In addition, most of the secondary whitening occurring in the batch of nephrite are accompanied by an increase in Ca content, confirming the previously refuted theory of calcification. More importantly, the principal component analysis of the twin nephrite artifacts suggests visually indistinguishable elemental changes caused by secondary changes, which may lead to misjudgment of ancient nephrite provenance using elemental data.

Disappearing ink! Unraveling the fading of a contemporary design object

2019 ◽  
Vol 4 (7) ◽  
Author(s):  
Gregory D. Smith ◽  
Victor J. Chen ◽  
Kurt F. Hostettler ◽  
Caitlyn E. Phipps
Keyword(s):  
Mass Spectrometry ◽  
Raman Spectroscopy ◽  
Liquid Chromatography ◽  
Modern Art ◽  
Synthetic Dyes ◽  
Destructive Analysis ◽  
Design Objects ◽  
Fading Rate ◽  
Non Destructive

Abstract In 2009 the Indianapolis Museum of Art acquired Fernando Brizio’s contemporary ceramic, Painting a Fresco with Giotto #3, as part of its effort to grow a collection of modern and contemporary European design objects. The artwork comprises an unglazed white faience vase that has been pierced with 30 brightly colored felt-tip markers whose dried ink stains create a whimsical polka-dot surface. The vase immediately joined a traveling exhibition, and when it returned to the museum after nearly a year of display, many of the ink spots had faded dramatically, some having nearly vanished. Technical analysis was undertaken to (1) determine the cause of the fading and the composition of its Giotto brand Turbocolor markers, (2) to determine the future fading potential of the object, and (3) to suggest new safeguards to protect this and similar objects from future damage. Non-destructive analysis of the vase using Raman spectroscopy proved challenging due to the overall application of an acrylic varnish by the artist and the intense fluorescence of many of the marker inks. Using liquid chromatography with mass spectrometry on surrogate pens acquired in 2014, the 30 markers utilized in the object were ultimately determined to contain 9 primary synthetic dyes and numerous synthetic byproducts. The inks are comprised of food colorants, which accounts for their rapid fading. In situ microfade testing showed that the vase is still extremely light sensitive and will fade further under even the most stringent lighting protocols. An artist interview provided valuable information about Brizio‘s thoughts concerning the life of these objects, his working methods, and the interpretation of the Giotto series of ceramics. The artwork has since been deaccessioned from the museum’s collection but has taken on a new role in gallery didactics focused on the materials of modern design and the ephemeral and changing nature of some artworks. This project highlights the urgency of characterizing the fading rate of potentially light sensitive modern art or directly identifying the colorants used in contemporary artworks prior to their first exhibition.

scholarly journals Non-destructive analysis of in situ ammonoid jaws by synchrotron radiation X-ray micro-computed tomography

10.26879/697 ◽  
2016 ◽  
Vol 19 (3) ◽  
Author(s):  
Yusuke Takeda ◽  
Kazushige Tanabe ◽  
Takenori Sasaki ◽  
Kentaro Uesugi ◽  
Masato Hoshino
Keyword(s):  
Computed Tomography ◽  
Synchrotron Radiation ◽  
Micro Computed Tomography ◽  
X Ray ◽  
Destructive Analysis ◽  
Non Destructive

scholarly journals Laser-excited elastic guided waves reveal the complex mechanics of nanoporous silicon

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Marc Thelen ◽  
Nicolas Bochud ◽  
Manuel Brinker ◽  
Claire Prada ◽  
Patrick Huber
Keyword(s):  
Guided Waves ◽  
Laser Ultrasonics ◽  
Bulk Silicon ◽  
Nanoporous Silicon ◽  
Stiffness Reduction ◽  
Mechanical Characterisation ◽  
Isotropic Elasticity ◽  
On Chip ◽  
Non Destructive

AbstractNanoporosity in silicon leads to completely new functionalities of this mainstream semiconductor. A difficult to assess mechanics has however significantly limited its application in fields ranging from nanofluidics and biosensorics to drug delivery, energy storage and photonics. Here, we present a study on laser-excited elastic guided waves detected contactless and non-destructively in dry and liquid-infused single-crystalline porous silicon. These experiments reveal that the self-organised formation of 100 billions of parallel nanopores per square centimetre cross section results in a nearly isotropic elasticity perpendicular to the pore axes and an 80% effective stiffness reduction, altogether leading to significant deviations from the cubic anisotropy observed in bulk silicon. Our thorough assessment of the wafer-scale mechanics of nanoporous silicon provides the base for predictive applications in robust on-chip devices and evidences that recent breakthroughs in laser ultrasonics open up entirely new frontiers for in-situ, non-destructive mechanical characterisation of dry and liquid-functionalised porous materials.

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