Xrf Spectroscopy Articles & Analysis
14 articles found
The secondary structure of a protein refers to the specific conformation formed by the rotation or folding of the polypeptide backbone atoms along a certain axis, that is, the spatial position arrangement of the polypeptide backbone atoms, which does not involve the amino acid residue side chain. The secondary structure of proteins mainly includes α-helices, β-pleated sheets, β-turns, and random ...
Introduction This white paper reports diesel engine oil analysis data demonstrating use of filtergram particle quantifier x-ray fluorescence (FPQ spectroscopy) to quantify severity of wear and contamination. Two independent measurements are performed on each filtergram specimen: pore blockage particle count and FPQ spectroscopic large particle elemental analysis. Causal inflections in ASTM ...
Soil testing has become a must-check item for environmental testing. In recent years, countries around the world have attached great importance to soil testing, which has led to great progress in soil testing technology. At the same time, countries around the world have increased their investment in soil metal testing, using advanced technologies such as spectroscopic analysis technology, ...
Black Friday is a huge date in retailers’ calendars. According to the NRF, the Black Friday weekend in the US runs from Thanksgiving to Cyber Monday and in 2018, Thanksgiving Day alone generated $3.7bn in online sales. And bargains in electrical and hi-tech goods are high on consumers’ shopping lists around the globe. Just over 50% of consumers[1] are seeking to purchase electrical ...
The EA8000 includes two X-ray techniques for fast and thorough analysis: X-ray transmission imaging to quickly find any metal particles and clearly show their size and shape. X-ray fluorescence spectroscopy (XRF) to determine which metal elements are present in the contaminated sites. ...
And for laboratories which are accredited according to DIN EN ISO/IEC 17025, calculating and applying the measurement uncertainty is essential. MSA in Spectroscopy In XRF, LIBS and OES analyses, the measurement system includes the following: The operators of the spectroscopy equipment. ...
Testing is performed using elemental analysis by atomic emission spectroscopy. That can include RDE, ICP, and the testing can include a variety of different techniques. ...
Elemental alloy analysis is usually carried out by using either OES (optical emission spectroscopy), XRF (X-ray fluorescence) or with LIBS (laser induced breakdown spectroscopy). Each technology is different and so is the amount of sample preparation needed. Where XRF can tolerate even quite dirty surfaces, to get quality results ...
Molecular sieves (Ms) modified either by treatment with a NaCl solution, or by microwave treatment, or by both NaCl and microwave treatment were employed to promote the removal of ammonium from aqueous solution. Parameters such as NaCl concentration, NaCl stirring time, microwave power and microwave irradiation time were optimized with respect to ammonium removal. The specific surface area, ...
Want to learn more about analyzing critical fluids like lubrication oil? Check out our NEW Knowledge Center. Our mission at Spectro Scientific is to enable our customers to always make confident, knowledge-based decisions about their valuable assets and machinery. Whether you are testing motor oil, hydraulic fluid, fuel or coolant, we want to give you the information you need to make these ...
Both were characterized using transmission electron microscopy, infrared and X-ray fluorescence (XRF) spectroscopy. The antimicrobial efficacy of each of natural kaolin clay, AgNPs- and CNTs-loaded clays were evaluated by their application in four concentrations (0.01, 0.03, 0.05 and 0.1 ppm) at different contact times (5 min, 15 min, 30 min and 2 h). ...
Silver clusters were incorporated into the Y zeolite framework and used as a photocatalyst toward pirimicarb. X-ray fluorescence (XRF), X-ray photoelectron spectroscopy (XPS), and low-temperature steady-state photoluminescence spectroscopic data indicate the formation of metallic silver as well as ionic clusters. ...
The sorbent, collected from the Late Cretaceous limestone beds, Tunisia, was characterised by X–ray diffraction (XRD), chemical analysis (XRF) and infrared spectroscopy (FTIR). XRF showed that the studied limestone contained high amount of calcium carbonates. ...
This paper presents experimental data and source apportionment simulations on particulate matter (PM10 and PM2.5) in the atmosphere of Sao Carlos/SP, Brazil. Both a Hi-vol sampler equipped with glass fibre filters and a Dichotomous sampler with nucleopore filters were used. The collected material was analysed for total carbon, using a thermometric method, and for traces of several chemical ...