Scientific Responsible:

Dr. Aida M. Conte (CNR Researcher)

People:

Guido Aurisicchio (CNR Technician)

Leda Pallante (CNR Technician)

Telephone Numbers

06 49914928

06 49914466

06 49914545

E-mail:

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Instruments:

1) Sequential X-ray Spectrometer System - Philips PW1480/10 equipped with:

• an automatic 12-positions sample changer
• 2 X-ray tubes with anodes of Chromium and Tungsten, respectively, operating to a maximum power of 3 kW.

• 6 analyzing crystals (LiF200, LiF220, GE, PE, PX1, PX3). 

• 2 detectors (gas proportional and scintillation). 

• 3 collimators (140, 300 and 700 micron).

• 1 filter (Brass 300). 

• software “Philips X40” for the management of the spectrometer, data acquisition and elaboration. 

2) Automatic Philips “PER'L X2” bead machine to fuse samples into solid buttons (fused discs) to be analyzed.

Analytical features of the instrument:

Analyses of major and minor elements, in the routine analyses, expressed in weight % (Na₂Oi, MgO, Al₂O₃, SiO₂, P₂O₅, K₂O, CaO, TiO₂, MnO, Fe₂O₃) and analyses of trace elements expressed in ppm (Nb, Zr, Sr, Rb, Ce, Ba, La, Ni, Co, Th, Zn). The precision and accuracy for major elements is usually below 3%. The analytical precision is better than 10% for trace elements.

The analytical procedure includes:

Fields of Application: 

The analytical activity is developed mainly in the fields of geologic and archaeological materials. The analytical protocol in use from January 2007, has been developed in collaboration with the Dr. Valerie Merle of  the “Laboratoire des Archeometrie et Archeologie: origin datation et tecnologie des materiaux, CNRS” of Lione. Such method, extended to the analysis of the geologic material, previses exclusively the use of fused discs for the whole analysis.