Determination of trace elements in ancient papyrus by LA-ICP-MS and EDS Amr, M A; Mohsen, H T; Zahran, N F [Element and Isotope Central Labaratory, N.R.C. A.E.A Cairo (Egypt)] 37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; ARCHAEOLOGICAL SPECIMENS; CHEMICAL ANALYSIS; CONCENTRATION RATIO; ELEMENTS; ENERGY SPECTRA; ICP MASS SPECTROSCOPY; LEAVES; PAPER; SCANNING ELECTRON MICROSCOPY; TRACE AMOUNTS; X-RAY FLUORESCENCE ANALYSIS Laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) is used as a sensitive technique for the multielemental trace analysis of small amounts of ancient papyrus samples. In order to prepare a homogeneous target for LA-ICP-MS measurements the inhomogeneous papyrus sample (only 20 mg was available) was fused with a lithium borate mixture (90% Li{sub 2}B{sub 4}O{sub 7}, 10% LiBO{sub 2}) at 1050 degree C in a Pt-Au crucible. Two commercial laser ablation systems (LSX 200 from CETAC and LUV 266 from Merchantek) were coupled to a quadrupole-based ICP-MS (Elan 6000, Perkin Elmer) and a double-focusing sector field ICP-MS (Plasma X 2, JEOL), respectively-solution-based calibration in LA-ICP-Ms by direct coupling of an ultrasonic nebulizers with the laser ablation chamber was applied to obtain quantitative data. Egypt 2002-04-01 English Journal Article Journal Name: Arab Journal of Nuclear Sciences and Applications; Journal Volume: 35; Journal Issue: 2; Other Information: PBD: Apr 2002 Medium: X; Size: page(s) 241-254 https://doi.org/ [] 2 35 Journal ID: ISSN 1110-0451; AJNADV; TRN: EG0200240048335 INIS 2010-12-30 20286731