Rigaku Nex QC+

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.

EDXRF for quality control applications
Specifically designed for routine quality control applications, the new Rigaku NEX QC+ features an intuitive "icon-driven" touch screen interface for easy operation and a built-in printer for convenience.

EDXRF with high precision and broad elemental coverage
The shuttered 50kV X-ray tube and Peltier cooled semiconductor detector deliver exceptional short-term repeatability and long-term reproducibility with excellent element peak resolution. This high voltage capability (50 kV), along with multiple automated X-ray tube filters, provides a wide range of applications versatility and low limits-of-detection (LOD).

EDXRF with autosampler, helium and FP options
Options include fundamental parameters, automatic sample changer, sample spinner and helium purge for enhanced light element sensitivity.

• Analyze ₁₁Na to ₉₂U non-destructively
• Solids, liquids, alloys, powders and thin films
• 50kV X-ray tube for wide elemental coverage
• SDD detector for superior resolution and sensitivity
• Modern smartphone style "icon driven" user interface
• Multiple automated tube filters for enhanced sensitivity
• Convenient built in thermal printer
• Low cost with unmatched performance-to-price ratio


EDXRF: Energy dispersive X-ray fluorescence analyzer

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NEX QC+ Applications

Analysis of gold (Au) in leaching solution

AppNote 1299: analysis of gold (Au) in leaching solution

Various ores, tailings and slags can be processed to recover trace gold content. After grinding the ore to a fine powder, the material can be processed through various steps to make a slurry. Accurate quantification of the gold content during leaching using gold cyanidation or other liquid processing is critical for optimum control of the extraction process. Having a fast and simple technique for making the measurement adds significant value by allowing more frequent measurements to be made by skilled and unskilled operators alike. To meet this need, Rigaku offers the NEX QC+ EDXRF analyzer. The NEX QC+ analyzer utilizes direct excitation with proprietary filters to provide unmatched sensitivity and lower detection limits.

Analysis of S, V, and Ni in crude oil

AppNote 1323: the analysis of sulfur, nickel, vanadium and iron in residual oil is demonstrated.

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.

Analysis of ULSD per ISO 13032

AppNote 1272: the analysis of sulfur in ULSD (ultra-low sulfur diesel) is demonstrated as per standard test method ISO 13032.

Regulations around the world have limited the amount of sulfur in various fuels oils with particular attention to diesel fuel. For many years road diesel has been limited to a maximum sulfur concentration between 10-15 ppm, depending on the global region. Now these limits are expanded to all diesel fuel, including use in large engines and off-road diesel engines. The results shown here indicate the Rigaku NEX QC+ EDXRF analyzer gives excellent performance for the measurement of ULSD as per standard test method ISO 13032.

Chlorine and predicted ash content in unburned biomass

AppNote 1420: measurement of chlorine and predicted ash content in unburned biomass is demonstrated.

Biomass refers to dry plant matter. Biomass is used as a feedstock in the pulp and paper industry as well as in the production of biofuels. Biomass is also an increasingly popular primary or secondary fuel at power plants and cement kilns. Ash consists of the metal oxides and heavier elements that remain after combustion removes the organic, gaseous and volatile components. Biomass combustion properties depend in part on the ash content, and prior to incineration chlorine levels must be at safe, low levels. EDXRF offers a fast and simple low cost method of measuring the chlorine content and predicting the % ash content, without the need for radioisotopes or long combustion analytical methods.

Chromium Coating in Aluminum

AppNote 1606: the measurement of chromium (Cr) conversion coating on aluminum is demonstrated.

Aluminum and steel are often coated with a protective conversion coating, also called passivate or passivation coating, to prevent oxidation and corrosion of the base metal. Conversion coatings include Cr, Ti, V, Mn, Ni, or Zr. A phosphate coating may be applied as well to minimize wear on cutting tools and stamping machines. Aluminum is often coated for use in aircraft parts, aluminum window frames and other similar industries where the aluminum is exposed to weathering. Steel for the automotive industry is typically first galvanized with a zinc coating before the conversion coating is applied. Protected steel is also used for outdoor sheds and other similar uses where steel is exposed to weathering. Conversion coating also help in the retention of paint for the final finished product.

Elements in Polypropylene

The measurement of trace levels of Al, Si, P, Cl, Ti and Ca in polypropylene is demonstrated.

In the production of polymers such as polypropylene (PP), polyethylene (PE) and polyethylene terephthalate (PET, PETE) various additives and stabilizers are added, as well as Si (as SiO2) as an anti-block. Trace levels of catalyst residues may also be present. To ensure proper quality control during the production process test samples are made and the trace elements are measured. To meet this industry need Applied Rigaku Technologies offers a full line of benchtop EDXRF analyzers. With simple, intuitive software interface and powerful, innovative design, Rigaku EDXRF systems make an excellent tool for quality control check at several places along the polymer production process.

Fe, SiO2 and S in magnetite ore concentrate

AppNote 1480: measurement of iron, silicon dioxide and sulfur in magnetite ore concentrate is demonstrated.

Ore is ground, cleaned, separated and concentrated in preparation for smelting. Impurities such as silicon dioxide and sulfur are considered penalty elements as they can adversely affect the quality of the beneficiation, concentrating and smelting processes, as well as the final properties of the iron or steel being produced. Rigaku NEX QC+ offers technicians a fast and simple means of monitoring elemental composition of ores and concentrates, and is a tool that can be used for quality checks throughout the entire smelting process.

Iron in Milk Powder

AppNote 1491: the measurement of iron in milk powder is demonstrated. The analysis is also used for measuring iron in similar food products such as cocoa powder and flour.

Milk is dried by evaporation to form powdered milk as way to preserve the milk, giving it a much longer shelf life without the need for refrigeration. Nutrients may be controlled or added at specific levels, the most important being iron. In the production of powdered milk the iron content is very important and monitored throughout the process to ensure proper iron content of final product. The measurement is also applicable to other similar food powders such as cocoa powder and flour. Monitoring iron can also be important to ensure no excessive contamination from the milling process. To meet these industry needs the Rigaku NEX QC+ offers technicians a fast and simple means of monitoring the iron composition of milk powder, cocoa powder and flour, and is a tool that can be used for quality checks throughout the entire production process.

More application notes are available by submitting the application request form