Application Notes: Atomic Spectroscopy

Inks and pigments with optically unique properties can provide quick visual verification of authenticity, and can be difficult to replicate.

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.

Elemental ratio determinations in foraminiferal calcite require the measurement of trace levels of Na, Mg, Sr, and ultra-trace levels of Li, B, Ba, Cd, Mn, U in a calcium rich matrix and ratioed to calcium.

In gemology the TSI ChemReveal LIBS Desktop Analyzer has been used to aid gemologists in gemstone classification. This paper highlights study results of this instrument in some of those applications.

Peak emission for silicon occurs at values beyond the range of sensitivity for silicon-based detectors, like CCDs. EMCCDs combine a larger field of view and higher resolution with high sensitivity in the NIR at lower cost.

The new Savillex PFA Cyclonic Spray Chamber is the first inert chamber with the traditional shape of a glass cyclonic, and is also the first translucent inert chamber.

Ancient Roman builders designed maritime concrete harbor structures to remain intact in the aggressive seawater environment for very long periods of time.

Milestone's UltraWAVE microwave digestion system with single reaction chamber (SRC) technology, enables the simultaneous digestion of up of to 22 different sample types and chemistries at temperatures and pressures as high as 300 ?C and 199 bar.

The permitted sulfur limit in fuel oils has been decreased to 10 ppm in many regions.

The lanthanide series is a series of metallic elements, with atomic numbers 58 through 71, which are - in order of increasing atomic number - cerium, praseodymium, neodymium, promethium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, and lutetium.

The new Savillex C400d PFA concentric nebulizer for ICP-MS combines the reliability of a low flow glass nebulizer with the chemical resistance and low elemental background of a PFA concentric nebulizer.

Sample matrices with high organic content have created a significant challenge for sample preparation methods.

This application note introduces an Application Package for quantitative analysis of additive elements in polymer.

This application note describes the capability of the Teledyne Leeman Lab's Prodigy7 High-Dispersion ICP for performing analysis according to SW-846 Method 6010C.

Moxtek now has a full energy dispersive X-ray fluorescence detector solution with Moxtek's XPIN detectors and our new MXDPP-50 electronics.

Demonstration of the advantages of using the Orbis micro-XRF elemental analyzer rather than other analysis techniques to perform elemental analysis through a plastic barrier and/or at atmospheric pressure.

SciAps has developed a handheld analyzer based on laser induced breakdown spectroscopy (LIBS).

With over 1300 commercial testing labs in the United States, one out of every three samples is for water analysis. There has been an even stronger emphasis on mercury testing and its concentration in our water supplies.

Mercury is a toxic, persistent pollutant found in many native ores rich in copper, silver and gold. As such ores are processed mercury can be released to the environment.

Single reaction chamber microwave digestion enables a chemist to digest up to 15 different specialty chemical samples simultaneously at temperatures as high as 300 ?C, greatly simplifying the workflow while maintaining superior quality digestions.

The analysis of coal is demonstrated, with specific emphasis on the measurement of Na2O, using a Cartesian geometry energy dispersive X-ray fluorescence (EDXRF) spectrometer employing the Fundamental Parameters (FP) approach.

Pharmaceutical samples spiked with several heavy metals were prepared for ICP-MS analysis using microwave digestion following the protocols in proposed USP chapters <232> and <233>. The results of the spike recovery study are discussed.

Moxtek's ULTRA-LITE X-ray source is a very small self contained X-ray source (X-ray tube and high voltage power supply) for use in portable X-ray applications, such as the handheld X-ray fluorescence (XRF) spectrometers. This note demonstrates that this X-ray source has a stable and repeatable X-ray flux output over time, which is vital for the precision of the calibrated XRF measurements.

The measurement of trace elements is important across a wide variety of materials characterization problems. When measuring small glass fragments collected from crime and accident scenes, forensics experts analyze trace strontium (Sr) and zirconium (Zr) typically unintentionally incorporated into the glass during manufacturing as one point of identification or comparison.

Single reaction chamber (SRC) microwave digestion offers multiple benefits over traditional dry ashing for the sample preparation of heavy crude oils for trace metals analysis. These include increased sample throughput, reduced risk of contamination, more complete digestion and retention of volatile analytes.

Moxtek's ULTRA-LITE X-ray source is a very small self contained X-ray source (X-ray tube and high voltage power supply) for use in portable X-ray applications, such as the handheld X-ray florescence (XRF) spectrometers. This note demonstrates that this X-ray source has a stable and repeatable X-ray flux output over time, which is vital for the precision of the calibrated XRF measurements.

Building on more than 10 years of Micro-XRF experience, the Orbis spectrometer yields a system with excellent Micro-XRF capability while setting a new standard in analytical flexibility. The Orbis incorporates a unique motorized turret integrating video and X-ray optics allowing coaxial sample view and X-ray analysis. The turret can accommodate two additional collimators along with the X-ray optic for a total of three X-ray beam sizes to expand the Orbis analytical capabilities beyond traditional Micro-XRF analysis.

Elemental analysis of aqueous solutions into the low ppm and sub-ppm concentration ranges is demonstrated, using the advanced Cartesian geometry Rigaku NEX CG Energy Dispersive X-ray Fluorescence (EDXRF) spectrometer in conjunction with the patented UltraCarry? sample preparation technique.

The US EPA wrote wastewater effluent limit guidelines for discharge permits granted to coal-fired power plants back in 1982, known as 40 CFR Part 423. However, the rule has not kept pace with changes in the industry over the past several decades. For that reason, the US EPA has revised the rule with new proposed revisions expected in November 2012 and the final rule expected by April 2014. To support the modification to this rule, the US EPA is developing a new ICP-MS method specifically for flue gas desulfurization wastewaters (FGDW).