Application Notes: Atomic Spectroscopy
Analysis of Impurities in Silver by Spark Ablation Sampling, Combined with ICP-OES
February 1st 2009A method for the determination of elemental impurities in solid silver samples was developed using a spark ablation accessory in combination with ICP-OES. Detection limits at the sub-ppm level were achieved along with good accuracy and precision.
The New Orbis Micro-XRF Analyzer Series
February 1st 2009Building 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. Primary beam filters can be used with all spot sizes available on the turret to allow true XRF analytical capabilities in a micro-spot analysis. The working distance is increased to allow analysis over rougher sample topography without sacrificing signal intensity.
Simplifying Measurement of D/H and 18O/16O Isotopic Ratios from Liquid Water by WS-CRDS
September 1st 2008Wavelength-Scanned Cavity Ring Down Spectroscopy combines the real-time speed and turnkey simplicity of optical spectroscopy with the precision (<0.1 δ18O [‰], < 0.5 δD [‰]) previously only available from complex IRMS systems.
Advantages of Silicon Drift Detectors
September 1st 2008The availability of new silicon drift detectors (SDD) allows for more precise measurements in less acquisition time. SDDs are often praised for their excellent energy resolution, but it is their increased throughput that make them ideal for many industrial applications. Due to the detector's smaller capacitance, a much shorter peaking time is used in the shaping amplifier without sacrificing resolution. This dramatically increases the throughput of the system. Compared with a conventional Si-PIN detector where the peaking time is as long as 25 ms, the drift detector operates at 1.6 ms, thereby increasing throughput from 10,000 counts per second to over 100,000. This advantage can be used in two primary ways.
Quantitative Analysis of Low Levels of Chlorine and Iron in Hydraulic Oil Samples
March 1st 2006Simple, fast, and reliable on-site hydraulic oil analysis should be an integral part of any preventative maintenance program. Since the majority of machine failures are contamination related, it is important to analyze the hydraulic fluid to monitor equipment condition and identify machine wear. Significant cost savings can result from early identification of machine failure, oil quality, handling and other problems. Oil analysis can detect changes in oil quality, contamination, wear and chemical differences. Benefits of this information include prolonged equipment life, reduced equipment downtime, and reduced overall maintenance costs. In addition, plants can increase intervals between oil changes, thus reducing waste oil, maintenance, and oil purchase costs.
RoHS/WEEE Application of a Miniature X-Ray Spectrometer
March 1st 2006The RoHS/WEEE directive requires the electronics industry to certify that products comply with maximum concentration amounts of particular elements and compounds (Cr VI, Pb, Cd, Hg, Br PBB/PBDE) by July 2006. Instrumentation must be developed to perform the certification.