Deciphering the Iron Provenance on a Medieval Building Yard: The Case of Bourges Cathedral

This paper presents the provenance study of the iron reinforcements of Bourges Cathedral (13th c.): the links of a 100 m long iron chain, surrounding the eastern parts of the cathedral at the triforium level and 4.5 to 5 m long tie-rods consolidating the arches of the inner aisle at the same level. The analytical methodology is based on the determination of trace rare earth elements analyses by LA-ICP-MS in the slag inclusions of the artefacts and in the slag found on candidate production sites combined with statistical approaches. This chemical approach is crossed with archaeological and historical studies on the monument itself and on the production sites. Ninety-nine iron samples were analyzed on the bars and chains and 238 iron slags from 3 presumed areas of supply. For the first time, iron circulation and trade around a single building yard over a time of 30 to 40 years is studied with a precision never obtained before with historical sources. It shows that mainly four different metallurgical districts, local and more distant, supplied the building yard, mostly depending on the construction phases and also on the types of iron armatures needed.

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Mineralogy and Geochemistry of Ultramafic Rocks from Rachoni Magnesite Mine, Gerakini (Chalkidiki, Northern Greece)

Minerals ◽

10.3390/min10110934 ◽

2020 ◽

Vol 10 (11) ◽

pp. 934

Author(s):

Evangelos Tzamos ◽

Micol Bussolesi ◽

Giovanni Grieco ◽

Pietro Marescotti ◽

Laura Crispini ◽

...

Keyword(s):

Raw Materials ◽

Mining Area ◽

Ultramafic Rocks ◽

Northern Greece ◽

Icp Ms ◽

Time In Literature ◽

History Of ◽

First Time ◽

The Eu

The importance of magnesite for the EU economy and industry is very high, making the understanding of their genesis for the exploration for new deposits a priority for the raw materials scientific community. In this direction, the study of the magnesite-hosting ultramafic rocks can be proved very useful. For the present study, ultramafic rock samples were collected from the magnesite ore-hosting ophiolite of the Gerakini mining area (Chalkidiki, Greece) to investigate the consecutive alteration events of the rocks which led to the metallogenesis of the significant magnesite ores of the area. All samples were subjected to a series of analytical methods for the determination of their mineralogical and geochemical characteristics: optical microscopy, XRD, SEM, EMPA, ICP–MS/OES and CIPW normalization. The results of these analyses revealed that the ultramafic rocks of the area have not only all been subjected to serpentinization, but these rocks have also undergone carbonation, silification and clay alteration. The latter events are attributed to the circulation of CO2-rich fluids responsible for the formation of the magnesite ores and locally, the further alteration of the serpentinites into listvenites. The current mineralogy of these rocks was found to be linked to one or more alteration event that took place, thus a significant contribution to the metallo- and petrogenetic history of the Gerakini ophiolite has been made. Furthermore, for the first time in literature, Fe inclusions in olivines from Greece were reported.

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UV-Vis Spectrophotometrical and Analytical Methodology for the Determination of Singlet Oxygen in New Antibacterials Drugs

Analytical Chemistry Insights ◽

10.4137/117739010700200015 ◽

2007 ◽

Vol 2 ◽

pp. 117739010700200 ◽

Cited By ~ 10

Author(s):

Tamara Zoltan ◽

Franklin Vargas ◽

Carla Izzo

Keyword(s):

Reactive Oxygen Species ◽

Singlet Oxygen ◽

Nalidixic Acid ◽

Reactive Oxygen ◽

Oxygen Species ◽

Inexpensive Method ◽

Analytical Methodology ◽

First Time

We have determined and quantified spectrophotometrically the capacity of producing reactive oxygen species (ROS) as 1O2 during the photolysis with UV-A light of 5 new synthesized naphthyl ester derivates of well-known quinolone antibacterials (nalidixic acid (1), cinoxacin (2), norfloxacin (3), ciprofloxacin (4) and enoxacin (5)). The ability of the naphthyl ester derivatives (6-10) to generate singlet oxygen were detecting and for the first time quantified by the histidine assay, a sensitive, fast and inexpensive method. The following tendency of generation of singlet oxygen was observed: compounds 7 >10 > 6 > 8 > 9 >> parent drugs 1-5.

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Effective procedures for the determination of As, Cd, Cu, Fe, Hg, Mg, Mn, Ni, Pb, Se, Th, Zn, U and rare earth elements in plants and foodstuffs

Analytical Methods ◽

10.1039/c8ay01295d ◽

2018 ◽

Vol 10 (33) ◽

pp. 4094-4103 ◽

Cited By ~ 21

Author(s):

Fernanda Pollo Paniz ◽

Tatiana Pedron ◽

Bruna Moreira Freire ◽

Daiane Placido Torres ◽

Fábio Ferreira Silva ◽

...

Keyword(s):

Trace Elements ◽

Rare Earth ◽

Rare Earth Elements ◽

Icp Ms ◽

International Regulations ◽

Effective Procedures

There are several international regulations regarding trace elements. The use of ICP-MS for their determination is usually a difficult task, especially when Hg is one of the target elements.

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