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Ultra-low P, S, Cl analysis in petroleum products

AppNote XRF1072: ultra-low P, S, Cl analysis in petroleum products

Background

Phosphorous, sulfur and chlorine are commonly analyzed elements in liquids such as petroleum products and organic solvents. For example, phosphorous is added to lubricating oils to prevent wear of gears under high pressure. Sulfur content in automotive fuel oils are regulated by the US environmental protection agency (EPA) and directives such as EURO VI to minimize air pollution due to automotive vehicles. Chlorine, contained for example in crude oil, is an unwanted element known for corroding oil processing installations and liquid transmission pipelines.

To better meet demands of such applications, the benchtop wavelength dispersive X-ray fluorescent (WDXRF) spectrometer Supermini200’s analyzing crystal set has been newly reconfigured to optimize performance for trace level analysis of P, S and Cl. XRF analysis allows rapid and precise elemental characterization of such samples with minimum sample preparation. Laborious sample treatment such as acid digestion or serial dilution are not required. Liquid samples are simply poured into a plastic cup covered with film for measurement and results can be obtained in minutes. This application note demonstrates Supermini200’s performance for low level P, S, Cl in oil samples for both short and long durations.

WDXRF products from Rigaku

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

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 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