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Darchuk L Rotondo GG Swaenen M Worobiec A Tsybrii Z Makarovska Y Van Grieken R 《Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy》2011,83(1):34-38
The composition of rock-painting pigments from Egypt (Gilf Kebia area) has been analyzed by means of molecular spectroscopy such as Fourier transform infrared and micro-Raman spectroscopy and scanning electron microscopy coupled to an energy dispersive X-ray spectrometer and X-ray fluorescence analysis. Red and yellow pigments were recognized as red and yellow ochre with additional rutile. 相似文献
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Heavy metal analysis around Iskenderun Bay in Turkey 总被引:1,自引:0,他引:1
The heavy metal analysis around Iskenderun Bay in Turkey was carried out using mosses, soils, mussels, and sediments. This region is one of the most industrial areas of Turkey, including iron–steel plants, beverage, liquefied petroleum gas (LPG) plants, and oil transfer docks. Energy dispersive X‐ray fluorescence spectrometry (Epsilon 5, PANalytical, Almelo, The Netherlands) was used to analyze all samples. V, Cr, Mn, Fe, Ni, Cu, Zn, As, and Pb elements were observed in all samples studied. Although Ce was detected in some mosses and soils, Sn was detected only in some moss samples. Pb concentrations in the moss samples are higher than the soil, the mussel, and the sediment samples. This can be attributed to the mosses that absorb heavy metals such as Pb easily from the air. As the aim of this study was to analyze heavy metals, the evaluation of these elements with their potential hazards for ecology and humans is briefly discussed. Copyright © 2010 John Wiley & Sons, Ltd. 相似文献
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Avigo D Godoi AF Janissek PR Makarovska Y Krata A Potgieter-Vermaak S Alfoldy B Van Grieken R Godoi RH 《Analytical and bioanalytical chemistry》2008,391(4):1459-1468
The particulate matter indoors and outdoors of the classrooms at two schools in Curitiba, Brazil, was characterised in order
to assess the indoor air quality. Information concerning the bulk composition was provided by energy-dispersive x-ray fluorescence
(EDXRF). From the calculated indoor/outdoor ratios and the enrichment factors it was observed that S-, Cl- and Zn-rich particles
are of concern in the indoor environment. In the present research, the chemical compositions of individual particles were
quantitatively elucidated, including low-Z components like C, N and O, as well as higher-Z elements, using automated electron
probe microanalysis low Z EPMA. Samples were further analysed for chemical and morphological aspects, determining the particle
size distribution and classifying them according to elemental composition associations. Five classes were identified based
on major elemental concentrations: aluminosilicate, soot, organic, calcium carbonate and iron-rich particles. The majority
of the respirable particulate matter found inside of the classroom was composed of soot, biogenic and aluminosilicate particles.
In view of the chemical composition and size distribution of the aerosol particles, local deposition efficiencies in the human
respiratory system were calculated revealing the deposition of soot at alveolar level. The results showed that on average
42% of coarse particles are deposited at the extrathoracic level, whereas 24% are deposited at the pulmonary region. The fine
fraction showed a deposition rate of approximately 18% for both deposition levels. 相似文献
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Certified reference materials (NIST 1645, BCR 143, IAEA 7, BCR 141, NIES_CRM_02, and IAEA 375) were used for determining the performance of a secondary target energy-dispersive X-ray fluorescence (EDXRF) spectrometer, Epsilon 5 (PANalytical, Almelo, the Netherlands). For the evaluation of the EDXRF spectra with polarized-beam high-energy excitation, the WinAxil software package has been applied. The results showed that Epsilon 5, EDXRF spectrometry is favorable for the determination of elemental concentrations in geological samples, but the sample preparation has the largest influence on the precision. However, they presented good agreement with certified values for most of the elements. 相似文献
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