Atomic Spectroscopy

The Rigaku RPF-SQX software automatically deconvolutes spectral peaks and models the sample matrix and X-ray absorption/enhancement effects using fundamental XRF equations. The RPF-SQX software is simple to use and offers many ways to craft a matrix model based on the specific fly ash composition, allowing semi-quantitative analysis without the use of reference standards.

The 12 W miniature source has a higher voltage and a much higher emission current than our present miniature X-ray sources, which is an advantage for a number of applications.

An ICP optical spectrometer suffers from many challenges when faced with high salt samples. This work describes the selection of the best components and accessories for this application.

This paper describes a handheld LIBS device that analyzes major elements, transition and heavy metals in geochemical samples. A breakthrough of this technique is the ability to analyze very low atomic number elements including H, Li, Be, B, C, F, Na and others never before measured in the field with a handheld analyzer.

Paper and plastic are coated with a thin layer of silicone during the manufacture of labels, tape or other adhesives, or as a barrier coating against air in the packaging of food, medical products and other materials. EDXRF analysis with the Rigaku NEX QC is shown to be an excellent tool for measuring silicone coating to ensure the proper physical properties of the product are maintained.

The analysis of naphtha was accomplished without dilution. A reduced nebulizer gas flow and a spray chamber temperature of -25C yielded the highest sensitivity and best precision and detection limits.

Strategic modifications were made to the sample introduction system of an ICP optical spectrometer in order to improve precision, reduce drift and carryover, lower detection limits and speed analysis.

Using EDX and FTIR techniques in conjunction with one another permits a more detailed elucidation of contaminant characteristics, thereby enhancing the validity of the respective results. This note presents an example of the analysis of various types of foreign matter entered during the food manufacturing process.

This application is a comparative study of Groundwater, ERM-CA615, EPA Method 245.7 and ISO Method 17852 using a Mercury analyzer. Contamination, interferences and sample preparation are a few of the major obstacles that can arise when monitoring Mercury at this level. Mercury is prevalent through point source contamination that often comes from industry and bio-accumulation.

Moxtek’s MAGPRO miniature x-ray source which is capable of up to 60 kV 200 μA and down to 4 kV and 1000 μA, and limited to an output power of 12 Watts. The 12W source is meant for use in small beach top systems where small size is valued.

Moxtek’s MAGPRO miniature x-ray source which is capable of up to 60 kV 200 μA and down to 4 kV and 1000 μA, and limited to an output power of 12 Watts. The 12W source is meant for use in small beach top systems where small size is valued.

Activated charcoal is used as a filter medium. As activated charcoal is processed, sulfur and chlorine levels are monitored EDXRF offers a fast and simple low cost method of measurement.

The presence of heavy metals such as lead (Pb) and cadmium (Cd) in toys poses a health risk. These toys and accessories must be evaluated for safety with respect to their content using defined test methods. This note presents an example of high-sensitivity ICP analysis conducted quickly and at low cost.

Rigaku EDXRF application note #1495 demonstrates the analysis of lead-zinc ore using the empirical calibration method. Elemental analysis is important in the examination of ores, from screening throughout the processing areas to final determination. The described method yields excellent results for screening and characterization of lead/zinc ore at the mine site or processing facilities for optimum product QA/QC.

Moxtek’s MAGPRO miniature x-ray source which is capable of up to 60 kV 200 μA and down to 4 kV and 1000 μA, and limited to an output power of 12 Watts. The 12W source is meant for use in small beach top systems where small size is valued.

This application note demonstrates that single calibration for diverse materials, such as minerals, ores and refractories, was established by the fusion method on the Rigaku Supermini200, a benchtop WDXRF spectrometer.

In the ICH Q3D Guideline for Elemental Impurities, 24 elemental impurities were identified as elements of concern due to their toxicity, and permitted daily exposure limits (PDE) were established. This application note presents a quick, accurate analysis of these elements.

This application note will demonstrate the ability of High Dispersion ICP-OES in the determination of alloying elements in stainless steels. The dual viewing capability will be used to determine the high concentration elements on the radial view while the axial view will determine the lower concentration, such as phosphorus (P) and sulfur (S). Stainless steels are a corrosion resistant family of iron alloys. The corrosion resistance is due to the formation of a passive chromium (III) oxide (Cr2O3) layer on the surface of the steel. If this layer is damaged by cutting, scratching or abrasion, it will regenerate, provided sufficient oxygen is available, preventing corrosion. Stainless steels have poor corrosion resistance in low oxygen environments since the oxide layer cannot be repaired quickly enough.

In honor of Spectroscopy's celebration of 30 years covering the latest developments in materials analysis, we asked a panel of experts to assess the current state of the art of X-ray fluorescence and to try to predict how the technology will develop in the future.

In honor of Spectroscopy's celebration of 30 years covering the latest developments in materials analysis, we asked a panel of experts to assess the current state of the art of laser-induced breakdown spectroscopy (LIBS), and to try to predict how technology will develop in the future.

Analysis of stainless steels and nickel alloys with handheld LIBS has proven challenging because Molybdenum – a key alloy element in the 0.5-3% level – is refractory and requires a much hotter plasma than many miniature, commercially available lasers can provide. A new proprietary laser design was utilized in a handheld LIBS analyzer and is shown to provide much better quantitative analysis of Mo down to 0.15% concentration.

In the agri-food sector it is important to not only study the soil composition and use of fertilizers, but also the uptake of nutrients and potentially toxic elements within the plants and crops themselves. Rigaku Application Note 1350 describes the analysis of agricultural soils and plant materials by EDXRF.

A novel adaptation to inductively coupled plasma–mass spectroscopy (ICP-MS), mass cytometry provides researchers with a tool to study the complexity of biology at the single-cell level.

This work focuses on the analysis of precious metals in simulated digested precious metal buttons, with an added emphasis on assessing the lowest limits which can be accurately measured.

This work focuses on the determination of seven non-toxic elements usually found in drinking waters with the PerkinElmer PinAAcle 500 flame AA spectrometer.

This work demonstrates the ability of the PinAAcle 500 AA spectrometer to accurately measure copper, iron, and manganese in wine samples at levels which meet the regulations imposed by China for imported wine.

This paper describes the challenges faced by labs analyzing mercury in fish samples when using conventional technologies such as CVAA and ICP and how direct mercury analysis can overcome these challenges.

Due to its ability to absorb trace amounts of mercury, analysis of lichen is a potential model for mercury contamination in a micro-ecosystem modeling system. The purpose of this application note is to validate the capabilities of the QuickTrace® M-7600 Cold Vapor Atomic Absorbance (CVAA) mercury analyzer in the ug/L range.

The analysis of glass and raw materials is demonstrated in the manufacturing of soda-lime glass, which makes up 90% of the global glass production and is used to make windows, glassware and bottles. The Rigaku NEX CG spectrometer yields excellent performance for the elemental analysis of raw materials and final characterization of finished glass.

Typically, there are many target elements included in the testing of drinking water, such as sodium (Na), calcium (Ca), lead (Pb) and cadmium (Cd). This note presents how ICPE spectrometry can provide accurate measurement of many elements, from those present at trace levels to those at high concentrations.