Oxides in high calcium limestone

AppNote 1614: the measurement of CaCO3, MgCO3, Fe2O3, Al2O3, SiO2 and K2O in high calcium limestone is demonstrated using empirical calibration.

Background

Sulfur, vanadium and nickel occur naturally in crude oil, and their concentrations vary depending on the geographical region of the oil deposits. Vanadium and nickel can foul the refining process during crude oil cracking, and so crude oil with low levels of vanadium and nickel is desirable. In the oil fields and in off-shore drilling, a quick and easy means of screening for vanadium and nickel is a valuable tool to begin to characterize the quality of the crude before refining. Applied Rigaku Technologies meets the industry analytical need with the NEX QC series of EDXRF analyzers. Fast and simple, the NEX QC+ provides an ideal tool for monitoring the concentrations of vanadium and nickel in crude, as well as the sulfur content.

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For more demanding applications, or for situations where analysis time or sample throughput is critical, Rigaku offers the new NEX QC+ spectro­meter. Employing the next generation silicon detector technology, the enhanced NEX QC+ affords significant improvement in elemental peak resolution and counting statistics, resulting in superior calibrations and measurement precision for the most challenging measurements. Read more...

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