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Lubricating Oil Analysis by Benchtop WDXRF According to ASTM D6443-14

AppNote XRF1079: Lubricating Oil Analysis by Benchtop WDXRF According to ASTM D6443-14

 

Lubricating oils are given specific functional properties by mixing additives with base oil. In order to assure consistent and desirable performance, it is very important to control the concentrations of the additives during the lubricant manufacturing process.

X-ray fluorescence (XRF) spectrometry has become increasingly popular for quantitative elemental analysis of base oils as well as additives and lubricant products due to its high precision and simple sample preparation. With liquids, sample preparation for XRF typically means simply pouring the sample into a plastic cell with a transparent film. Unlike other techniques, such as Inductively-Coupled Plasma Optical Emission Spectroscopy (ICP-OES), XRF does not require time-consuming processes such as chemical decomposition, digestion or serial dilution. ASTM D6443-14 specifies the use of the wavelength- dispersive (WD) XRF technique since it offers sufficiently high precision, resolution and light-element sensitivity to meet the industry’s needs.

Traditionally, WDXRF spectrometers have been large floor-standing models with substantial installation requirements and high replacement cost of faulty components. In its search for greater cost-efficiency, the lubricant industry is turning to tools that not only do the job, but are also easier and less costly to acquire, install and maintain.

This application note demonstrates the capability of low-cost, compact benchtop WDXRF spectrometer for quantitative elemental analysis of Ca, Cl, Cu, Mg, P, S and Zn in base oils, lubricating

 

WDXRF Products from Rigaku

Benchtop tube below sequential WDXRF spectrometer analyzes O through U in solids, liquids and powders

High-power, tube-below, sequential WDXRF spectrometer with new ZSX Guidance expert system software

High power, tube above, sequential WDXRF spectrometer with new ZSX Guidance expert system software

High power, tube below, sequential WDXRF spectrometer with Smart Sample Loading System (SSLS)

High power, tube above, sequential WDXRF spectrometer

WDXRF spectrometer designed to handle very large and/or heavy samples

High-throughput tube-above multi-channel simultaneous WDXRF spectrometer analyzes Be through U

WDXRF ultralow chlorine analyzer

WDXRF ultra low sulfur analyzer for method ASTM D2622

ASTM D2622 method WDXRF analyzer for sulfur (S) in petroleum fuels and ULSD

Tube below, single element WDXRF analyzer for quality control applications