X-ray analysis Articles
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The 2006 Masao Horiba Awards
In memory of the 50th anniversary after the foundation of HORIBA, Ltd., the "Masao Horiba Awards" was established after the founder's name. In 2006, the theme for the 3rd Masao Horiba Awards was "X-ray analysis", and among many excellent candidates, this prize was awarded to 3 people, and a special award was awarded to 1 person. The purpose of the 2006 Masao Horiba Awards, the circumstances from ...
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High-Sensitivity Small-Size X-Ray Fluorescence Spectrometers
Using a small X-ray tube, X-ray fluorescence analysis can achieve a high seneitivity through such means as appropriate geometrical arrangement, pretreatment and total reflection. This article outlines relevant X-ray element technologies, with a focus on high-sensitivity small-size X-ray fluorescence analysis that is being developed by a researchers' team including the author. This method permits ...
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Enhanced removal of Hg(II) from acidic aqueous solution using thiol-functionalized biomass
Spent grain, the low-cost and abundant biomass produced in the brewing industry, was functionalized with thiol groups to be used as an adsorbent for Hg(II) removal from acidic aqueous solution. The adsorbents were characterized by the energy-dispersive X-ray analysis (EDAX) and Fourier transform infrared (FTIR) spectroscopy. Optimum pH for Hg(II) adsorption onto the thiol-functionalized spent ...
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Material History — The Past of Materials Read with X-Ray
By using fluorescent X-ray, we can read out the past information hidden in a material. This lecture explained X-ray fluorescent analysis using synchrotron radiation by referring to the identification for the Wakayama Poisoned Curry Murder Case, presumption of origins of ceramic ware, and research on plants that absorb and accumulate toxic arsenic from the environment, as ...
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Seizure of 16 tons of cocaine with Smith Detection’s HCVS
Recently, the German customs authority was able to detect 16 tons of cocaine - the largest amount ever seized in Europe - using Smiths Detection‘s stationary container inspection system HCVS. Across Europe, many customs authorities work collaboratively to share risk analysis in order to identify and intercept suspicious containers entering European borders. Thanks to this collaborative ...
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Ion chemistry of waters impounded by the Ziqlab dam, Jordan, and weathering processes – a case study
The area included in the present investigation is that surrounding Ziqlab dam in the northern Jordan Valley. The water chemistry of the impounded lake shows that it is dominated by Mg, Ca, Na and HCO3. These waters reflects the dominance of carbonate weathering with some contribution of silicates. Mg + Ca + Na and HCO3 + Cl account for about 90% of the total cations and anions. X-ray analysis ...
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Enhanced removal of Hg(II) from acidic aqueous solution using thiol-functionalized biomass
Spent grain, the low-cost and abundant biomass produced in the brewing industry, was functionalized with thiol groups to be used as an adsorbent for Hg(II) removal from acidic aqueous solution. The adsorbents were characterized by the energy-dispersive X-ray analysis (EDAX) and Fourier transform infrared (FTIR) spectroscopy. Optimum pH for Hg(II) adsorption onto the thiol-functionalized spent ...
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X-ray analysis of strain, composition and elastic energy in Ge islands on Si(001)
X-ray diffraction techniques have been extensively employed to study several structural and chemical properties of self-assembled islands. In this review we discuss recent results on Ge islands grown on Si(001). Grazing incidence diffraction is used to map the strain distribution of Ge pyramids and domes. By tuning the X-ray energy near the Ge K edge – to perform anomalous diffraction ...
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Saving Costs by Using FLUXANA Calibration Sets
Introduction In order to use X-ray fluorescence analysis (XRF) quantitatively, the analytical system must be calibrated. Calibration standards are required for this. The usual procedure begins with the purchase of reference materials as powders, these samples are prepared as, e.g., fusion beads, they are measured as calibration standards and, finally, calibration and validation are conducted. ...
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Removal of manganese ions from synthetic groundwater by oxidation using KMnO4 and the characterization of produced MnO2 particles
The aim of this study is to investigate the conditions for the removal of manganese ions from synthetic groundwater by oxidation using KMnO4 to keep the concentration below the allowed level (0.05 mg/L). The process includes low-level aeration and addition of KMnO4 in a Jar test system with Mn2 + concentration of 0.50 mg/L, similar to that of natural groundwater in Taiwan. Different parameters ...
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Preparation and adsorption properties of dialdehyde 8-aminoquinoline starch
Dialdehyde 8-aminoquinoline starch (DASQA) was synthesized by the reaction of dialdehyde starch (DAS) and 8-aminoquinoline and was used to adsorb various ions from aqueous solution. DASQA was characterized by Fourier transform infrared (FT-IR) spectra, thermogravimetric analysis, X-ray diffraction analysis. The adsorption properties of the polymer for Pb2+, Cu2+, Cd2+, ...
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Application of Scallop shell-Fe3O4 nanoparticles for the removal of Cr(VI) from aqueous solutions
In this study, removal of Cr(VI) by Scallop shell-Fe3O4 nanoparticles was investigated with variation of pH, adsorbent dosage, initial Cr(VI) concentration, ionic strength and temperature. Coating of Fe3O4 nanoparticles onto Scallop shell was identified by Fourier transform infrared spectroscopy, X-ray diffraction, scanning electron microscopy and energy dispersive X-ray analysis. The maximum ...
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Size-controlled preparation of ruthenium nanoparticles using polyaromatic amine-containing compounds as hydrogenation nanocatalyst precursors
Ruthenium nanoparticles stabilised by polyaromatic amine-containing compounds (aminoethylcarbazole, aminoanthracene and aminoanthraquinone) were synthesised in solution using three different preparative methods, namely modified polyol reduction, borohydride reduction and phase-transfer method, respectively. Their product yields, particle sizes and size distributions were compared accordingly. The ...
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Enhanced photocatalytic activity of nanocomposites of TiO2 doped with Zr, Y or Ce polyoxometalates for degradation of methyl orange dye
The synergistic effect of polyoxometalate (POM) and metal-doped TiO2 (metal = Zr, Y and Ce) was examined, to fabricate nanocomposites with enhanced photocatalytic activities toward the degradation of methyl orange (MO), as a model textile dye. A series of new nanocomposites, containing different loading amounts of H9Na3[WZn3(H2O)2(ZnW9O34)2].24H2O (HZnW) (10–30%) on each of the metal-doped ...
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Uptake routes and toxicokinetics of silver nanoparticles and silver ions in the earthworm Lumbricus rubellus
Current bioavailability models, such as the free ion activity model and biotic ligand model, explicitly consider that metal exposure will be mainly to the dissolved metal in ionic form. With the rise of nanotechnology products and the increasing release of metal‐based nanoparticles (NPs) to the environment, such models may increasingly be applied to support risk assessment. However, it is not ...
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Use of chemically treated sawdust for chromium removal from aqueous solutions: effect of process parameters
This paper reports the effect of various process parameters on the removal of chromium from aqueous solution using formaldehyde–treated timber industry waste (sawdust). The adsorbent was characterised by Scanning Electron Microscopy (SEM) and Energy Dispersive X–Ray Analysis (EDAX). Influence of chromium concentration, pH, adsorbent dose and contact time on chromium removal from aqueous solution ...
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Effect of Au nanoparticles added in nanocrystalline TiO
2film on the photoelectrode of dye–sensitised solar cellsIn this study, we used a citrate reduction method and electrophoretic deposition (EPD) to prepare hybrid nanocrystalline TiO2/Au films and applied it to the photoelectrode of dye–sensitised solar cell. The films and solar cells were investigated by field emission scanning electron microscopy (FE–SEM), energy dispersive X–ray analysis (EDX), X–ray diffraction (XRD), I–V characteristics and ...
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Equilibrium and kinetics study on removal of arsenate ions from aqueous solution by CTAB/TiO2 and starch/CTAB/TiO2 nanoparticles: a comparative study
We present a comparative study on the efficacy of TiO2 nanoparticles for arsenate ion removal after modification with CTAB (N-cetyl-N,N,N-trimethyl ammonium bromide) followed by coating with starch biopolymer. The prepared nanoparticles were characterized by Fourier transform infrared spectroscopy (FT-IR), X-ray diffractometry (XRD), thermogravimetry, scanning electron microscopy (SEM) and ...
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EDXRF Analysis of Lead, Cadmium, Silver, Copper in Lead-Free Solder Materials
X-ray fluorescence analysis can be used to quickly and easily analyze samples in solid, powder, and liquid states nondestructively, and is therefore widely used as a screening technique for compliance with the RoHS/ELV directives. A large amount of lead-free solder is used for surface-mount circuit boards. Here we evaluated the sensitivity of analysis of Pb, Cd, Ag, and Cu in lead-free solder ...
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Qualitative and Quantitative Analysis of Seafood by EDXRF
X- ray fluorescence analysis, in addition to its effectiveness in analysis of inorganic materials such as metals and ceramics, is also effective for the detection and quantitative analysis of minerals and heavy metals in foods. Not only can samples be analyzed directly without conducting time-consuming pretreatment, sensitive and accurate measurement is also possible using simple preparation ...
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