Compass 4294 Is Used To Analyze The Content Of Heavy Metal Elements In Lubricating Oil - Metal
Lubricating oil contains three main types of metal-related elements: additives, wear metals, and contaminants. Additives improve properties like viscosity and anti-wear performance. Monitoring their levels ensures the oil is suitable for the engine. Increased levels of wear metals like iron and copper may indicate abnormal engine wear. Contaminants such as dust and water can degrade oil performance and accelerate component wear. Monitoring these elements helps determine if the oil needs replacement or filtration. In summary, lubricating oil is vital for machinery operation. Understanding its properties and continuously monitoring metal elements extends engine and machinery lifespan and optimizes performance.This application report shows that the Compass 4294 - a high-performance, portable benchtop energy-dispersive X-ray fluorescence spectrometer - is fully capable of analyzing the heavy metal content in oil, ranging from ppm levels to percentages. This application note demonstrates the method of analyzing wear metals in lubricants using the Compass 4294.
The Compass 4294 is widely used for analyzing metals in lubricating oil and complies with the following standards:
ASTM D7751/ASTM D6481 ---
Determination of additive elements (Mg, P, S, Cl, Ca, Zn, Mo) in lubricating oil
ASTM D5059 ---
Lead (Pb) in gasoline
0.010 to 5.0 grams of lead per US gallon
0.012 to 6.0 g Pb/UK gal
0.0026 to 1.32 grams of lead per liter
The continuous testing performance of the metal standard samples in lubricating oil with a concentration of >300ppm is as follows:
A series of imported lubricating oil standards were used to calibrate the Compass 4294 spectrometer.
The background intensity was obtained by testing blank samples, and combined with the slope of the standard curve, the detection limits of this method for testing crude oil samples are as follows: Ca 7 ppm, Ti 1 ppm, V 1.5 ppm, Cr 1.5 ppm, Mn 2.5 ppm, Fe 3 ppm, Ni 3 ppm, Cu 3 ppm, Zn 3 ppm, Pb 4 ppm, Mo 5 ppm, Ag 6 ppm, Cd 8 ppm, Sn 10 ppm
Based on these test results, Compass 4294 has been shown to be able to analyze metallic elements in oil, lubricant and similar matrix samples with high precision and accuracy. The analysis scheme is simple to operate and the results are reliable. It is an effective tool for field and laboratory analysis of metal components in oil products.