Geochemical Characterization of Suspended Particles in Estuarine and Coastal Seawater by X-Ray Fluorescence Spectrometry

1986 ◽  
Vol 15 (7) ◽  
pp. 1141-1144 ◽  
Author(s):  
Tasuku Akagi ◽  
Hiroki Haraguchi
Keyword(s):  
Suspended Particles ◽  
Fluorescence Spectrometry ◽  
Geochemical Characterization ◽  
X Ray ◽  
Coastal Seawater

HIGH ENERGY SYNCHROTRON X-RAY MICROSPECTROSCOPY FOR GEOCHEMICAL CHARACTERIZATION OF TERRESTRIAL AND EXTRATERRESTRIAL SAMPLES

2016 ◽  
Author(s):  
Antonio Lanzirotti ◽  
◽  
Stephen R. Sutton ◽  
Matt Newville ◽  
Jeffrey P. Fitts ◽  
...  
Keyword(s):  
High Energy ◽  
Geochemical Characterization ◽  
X Ray

Characterization of Permalloy Thin Films Via Variable Sample Exit Angle Ultrasoft X-Ray Fluorescence Spectrometry

1989 ◽  
pp. 261-268 ◽  
Author(s):  
George Andermann ◽  
Francis Fujiwara ◽  
T. C. Huang ◽  
J. K. Howard ◽  
N. Staud
Keyword(s):  
Thin Films ◽  
Fluorescence Spectrometry ◽  
Exit Angle ◽  
X Ray ◽  
Permalloy Thin Films

Mineralogical and geochemical characterization of archaeological ceramics from the 16th century El Badi Palace, Morocco

Clay Minerals ◽  
2018 ◽  
Vol 53 (3) ◽  
pp. 459-470
Author(s):  
Mouhssin El Halim ◽  
Lahcen Daoudi ◽  
Meriam El Ouahabi ◽  
Valérie Rousseau ◽  
Catherine Cools ◽  
...  
Keyword(s):  
Sixteenth Century ◽  
Chemical Characterization ◽  
Raw Material ◽  
Maximum Temperature ◽  
X Ray Diffraction ◽  
Archaeological Ceramics ◽  
Geochemical Characterization ◽  
X Ray ◽  
Firing Tests

ABSTRACTTextural, mineralogical and chemical characterization of archaeological ceramics (zellige) from El Badi Palace (Marrakech, Morocco), the main Islamic monument from the Saadian period (sixteenth century), has been performed to enhance restoration and to determine the technology of manufacturing. A multi-analytical approach based on optical and scanning electron microscopy, cathodoluminescence, X-ray fluorescence and X-ray diffraction was used. Re-firing tests on ceramic supports were also performed to determine the firing temperatures used by the Saadian artisans. A calcareous clay raw material was used to manufacture these decorative ceramics. The sherds were fired at a maximum temperature of 800°C in oxidizing atmosphere. The low firing temperature for ‘zellige’ facilitates cutting of the pieces, but also causes fragility in these materials due to the absence of vitreous phases.

The Application of X-Ray Fluorescence and Diffraction to the Characterization of Environmental Assessment Samples

1981 ◽  
Vol 25 ◽  
pp. 189-194
Author(s):  
Albert C. Censullo ◽  
Frank E. Briden
Keyword(s):  
Computer Program ◽  
Environmental Assessment ◽  
Technical Support ◽  
Support Staff ◽  
Fluorescence Spectrometry ◽  
X Ray ◽  
Fundamental Parameters ◽  
Technical Support Staff

The Technical Support Staff is called upon for analysis of a wide variety of sample types many of which have little sample history. However, it is usually necessary to account for all elements present. For these reasons, x-ray fluorescence spectrometry (XRF) has been a useful tool. Unfortunately, XRF requires the use of a range of standards for each element, the preparation of which could become so time consuming that the advantages of XRF would soon be diluted. Consequently, the utility of the J. W. Criss fundamental parameters computer program was evaluated for samples in which only one standard per element was used and where the standard matrix did not strictly resemble the unknown matrix. Some of the results of these tests on environmental assessment samples are reported here.

Characterization of Permalloy Thin Films via Variable Sample Exit Angle Ultrasoft X-ray Fluorescence Spectrometry

1988 ◽  
Vol 32 ◽  
pp. 261-268 ◽  
Author(s):  
George Andermann ◽  
Francis Fujiwara ◽  
T.C. Huang ◽  
J.K. Howard ◽  
N. Staud
Keyword(s):  
Thin Films ◽  
Transition Metal ◽  
Analytical Tool ◽  
Fluorescence Spectrometry ◽  
Exit Angle ◽  
X Ray ◽  
Escape Depth ◽  
Sample Depth ◽  
Permalloy Thin Films

Recently variable sample exit-angle x-ray fluorescence spectrometry (VEA-XRF) has been shorn to be a useful analytical tool for monitoring the oxidation of the surfaces of bulk Cu, Ni as well as that of Fe. In these studies advantage was taken of the well known phenomenon that for each transition metal oxide (MO) Lβ/Lα intensity ratio value is higher than for the transition metal (M), itself. Within the limits of the photon-escape depth de, which for these photons are generally below 5000 Å, varying the sample exit-angle θ offers an opportunity for seeing whether or not the oxidation of the surfaces of bulk M belongs to one of the following two classes: (I) uniform oxidation throughout the entire observable sample-depth, (II) preferential oxidation of the top surface layer, i.e. depth dependent oxidation.

Forensic application of total reflection X-ray fluorescence spectrometry for elemental characterization of ink samples

2010 ◽  
Vol 65 (2) ◽  
pp. 167-170 ◽  
Author(s):  
Sangita Dhara ◽  
N.L. Misra ◽  
S.D. Maind ◽  
Sanjukta A. Kumar ◽  
N. Chattopadhyay ◽  
...  
Keyword(s):  
Total Reflection ◽  
Fluorescence Spectrometry ◽  
Forensic Application ◽  
X Ray ◽  
Elemental Characterization

scholarly journals Characterization of pre-Columbian artefacts in situ through handheld portable X-ray fluorescence spectrometry: the case of ceramics from the Mochica site of San José de Moro (Peru)

2016 ◽  
Vol 4 (1) ◽  
Author(s):  
Nino Del-Solar-Velarde ◽  
Stan Kinis ◽  
Rémy Chapoulie ◽  
Renaud Joannes-Boyau ◽  
Luis Jaime Castillo
Keyword(s):  
Fluorescence Spectrometry ◽  
San Jose ◽  
X Ray
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