14. juni 2018

Preparation and XRF Analysis of Fly Ash Fused Beads

Application Note from Spex Sample Prep.

Fly ash is a waste product from the combustion of coal and is comprised of the mineral particles that rise with the flue gasses. Recovered fly ash is used as component in certain cement mixes and improves the durability and strength of concrete.

In this study, a sample of fly ash was pulverized and blended, and then fused into two sets of glass beads using a Katanax K1 electric fusion fluxer. Two different lithium borate fusion fluxes from SPEX CertiPrep were used to prepare five beads with each flux. The beads were then analyzed by energy dispersive X-ray flourescence spectroscopy (ED-XRF) and the results were compared both within a set and between the two sets to evaluate consistency of beads produced using the K1 and effect of flux composition on the XRF measurements.

View the Application Note here

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14. juni 2018

Rigaku Application Note

#1705 - The measurement of trace levels of Al, Si, P, Cl, Ti and Ca in polypropylene is demonstrated.

Background
In the production of polymers such as polypropylene (PP), polyethylene (PE) and polyethylene terephthalate (PET, PETE) various additives and stabilizers are added, as well as Si (as SiO2) as an anti-block. Trace levels of catalyst residues may also be present. To ensure proper quality control during the production process test samples are made and the trace elements are measured. To meet this industry need Applied Rigaku Technologies offers a full line of benchtop EDXRF analyzers. With simple, intuitive software interface and powerful, innovative design, Rigaku EDXRF systems make an excellent tool for quality control check at several places along the polymer production process.

View the Application Note here

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14. marts 2017

Lynhurtig kvalitetskontrol på foder

Kvalitetskontrol af råvarer, ingredienser, mix eller færdigvarer med Røntgen Flourescens er nu hurtigere og bedre end nogensinde.

Kvalitetskontrol af råvarer, ingredienser, mix eller færdigvarer med Røntgen Flourescens er nu hurtigere og bedre end nogensinde.

Bestemmelse af Na, Mg, P, Cl, K, Ca, Mn, Fe og mange flere, med detektions grænser fra 1 ppm - måles direkte, uden nævneværdig prøve forberedelse.

Takket være den rivende udvikling af detektorer, optik og med Rigaku's RFP-SQX software, måles alle elementer på én gang og uden kalibrering.

Læs hele "Analysis of Animal Feeds"-applikationen fra Rigaku her. 

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10. februar 2017

Stony-iron meteorite analysis

Analysis of a stony-iron meteorite using a HyPix-3000 multi-dimensional detector.

Introduction
A stony-iron meteorite is like a single crystal. When using 0- or 1-dimensional detectors, only a few diffraction peaks are observed. In this situation, identification of crystalline phases cannot be conducted. Therefore, a stony-iron meteorite was analyzed using the multi-dimensional detector, HyPix-3000, which has an effective detection area for the identification of crystalline phases.

 

 

Measurements and results
A stony-iron meteorite was analyzed using the HyPix-3000. Inside a stony-iron meteorite, there are transparent parts similar to glass and opaque parts similar to metal. The transparent parts were thought to be non-crystalline (amorphous). However, when measurement of the transparent part was actually performed, only one diffraction line was observed. In general, when measurement is done with a 0D or a 1D detector, the range in which diffraction X-rays can be detected from the sample is limited to a certain region. (This region is indicated in yellow in Fig. 1.) In this experiment, the diffraction lines, indicated with red arrows, are within the scanning range, and therefore can be detected. On the other hand, it is possible to acquire information on multiple lattice planes, as shown in Fig. 2, by using the HyPix-3000, which has a wide effective detection area, and by performing measurement while oscillation the sample. When the 2D diffraction image obtained in Fig. 2 was converted to a 2θ-I profile and qualitative analysis of the transparent part was carried out, it was possible to identify forsterite (Mg₂SiO₄) (Fig. 3). Since diffraction spots were observed, it was conjectured that the glass-like transparent part is a single crystal or is comprised of an extremely small number of crystal grains.

 

 

 

 

 

 

Fig. 1: X-ray diffraction pattern of glass-like transparent part when using a 0D or 1D detector

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Fig. 2: 2D diffraction image of transparent part (with oscillation)

 


Fig. 3: Result of qualitative analysis of transparent part


Recommended equipment and software

  • Automated Multipurpose X-ray Diffractometer SmartLab
  • 2D Hybrid Pixel Array Detector HyPix-3000

 

 

 

 

 

 

 

 

 

The SmartLab is the most novel high-resolution diffractometer available today.  
Perhaps its most novel feature is the SmartLab Guidance software,
which provides the user with an intelligent interface that guides you through the intricacies of each experiment. It is like having an expert standing by your side.
For more information click here.

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