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stainless and low alloy steel analysis using handheld LIBSAnalysis 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.
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Raman Spectroscopic Evaluation of BonesRaman spectroscopy provides data on bone mineral crystallinity, carbonate to phosphate ratio and extent of collagen cross-linking, all compositional information that is intimately related to biomechanical characteristics of this unique material. Key words for lead email subject line: Raman spectroscopy on bones
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Probing Aqueous Surfaces by TOF-SIMSA breakthrough using a microfluidic interface to conduct sensitive time-of-flight secondary ion mass spectrometry (TOF-SIMS) analysis and study liquid surfaces in situ under vacuum conditions is described here.
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Analyzing Recycled Polyethylene Resin for Polypropylene Contamination Using FT-IRThe use of post-consumer recycled, high-density polyethylene (HDPE) has been steadily growing. Infrared technique is commonly used to identity polypropylene (PP) with is a common contaminant in post-consumer HDPE resin.
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Analyzing Recycled Polyethylene Resin for Polypropylene Contamination Using FT-IRThe use of post-consumer recycled, high-density polyethylene (HDPE) has been steadily growing. Infrared technique is commonly used to identity polypropylene (PP) with is a common contaminant in post-consumer HDPE resin.
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Matrix-Assisted Laser Desorption-Ionization Imaging Mass Spectrometry for Direct Tissue AnalysisA summary of the most recent advances in sample preparation, instrumentation, and data-processing techniques for MALDI-IMS
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Matrix-Assisted Laser Desorption-Ionization Imaging Mass Spectrometry for Direct Tissue AnalysisA summary of the most recent advances in sample preparation, instrumentation, and data-processing techniques for MALDI-IMS
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Matrix-Assisted Laser Desorption-Ionization Imaging Mass Spectrometry for Direct Tissue AnalysisA summary of the most recent advances in sample preparation, instrumentation, and data-processing techniques for MALDI-IMS
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XRF in Agronomy Applications—Analysis of Plant Tissues and FertilizersNew excitation developments and advanced detector technology enable the use of EDXRF for multielement analysis of plant material and fertilizers, with improved detection limits and reduced measurement time. These features are combined with easy sample preparation and low cost of investment.
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CMOS Technology for Scientific ImagingStarting in the 1980s and continuing today, there have been large improvements in charge-coupled devices (CCDs), driven to a large extent by the needs of both the military and the scientific community consisting of astronomers, chemists, and biologists. This resulted in technologies such as back thinning to increase UV and near-infrared (NIR) sensitivity, deep depletion to increase NIR sensitivity, as well as the direct detection of X-rays.
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The Big Review II: The Physical Mechanism of Infrared Absorbance and Peak TypesIn the second installment of “The Big Review,” we discuss the physical mechanism behind how molecules absorb infrared (IR) radiation. Because light can be thought of as a wave or a particle, we have two equivalent pictures of IR absorbance. We also discuss the quantum mechanics behind IR absorbance, and how this leads to the different peak types observed in IR spectrum.
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Elemental Analysis of Goji Berries Using Axially and Radially Viewed Inductively Coupled Plasma–Optical Emission SpectrometryA method for the multielemental determination of metals and nonmetals in goji berries (Lycium barbarum L.) by axially and radially viewed inductively coupled plasma-optical emission spectrometry (ICP-OES) is presented.
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Elemental Analysis of Goji Berries Using Axially and Radially Viewed Inductively Coupled Plasma–Optical Emission SpectrometryA method for the multielemental determination of metals and nonmetals in goji berries (Lycium barbarum L.) by axially and radially viewed inductively coupled plasma-optical emission spectrometry (ICP-OES) is presented.
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Elemental Analysis of Goji Berries Using Axially and Radially Viewed Inductively Coupled Plasma–Optical Emission SpectrometryA method for the multielemental determination of metals and nonmetals in goji berries (Lycium barbarum L.) by axially and radially viewed inductively coupled plasma-optical emission spectrometry (ICP-OES) is presented.
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Elemental Analysis of Goji Berries Using Axially and Radially Viewed Inductively Coupled Plasma–Optical Emission SpectrometryA method for the multielemental determination of metals and nonmetals in goji berries (Lycium barbarum L.) by axially and radially viewed inductively coupled plasma-optical emission spectrometry (ICP-OES) is presented.
Latest:
Elemental Analysis of Goji Berries Using Axially and Radially Viewed Inductively Coupled Plasma–Optical Emission SpectrometryA method for the multielemental determination of metals and nonmetals in goji berries (Lycium barbarum L.) by axially and radially viewed inductively coupled plasma-optical emission spectrometry (ICP-OES) is presented.
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Forensic Applications of Isotope-Ratio Mass SpectrometryThe isotopic profile of a material refers to the ratios of the stable isotopes of elements contained within, such as 2H/1H, 13C/12C, and 18O/16O. Biological, chemical, and physical processes cause variations in the ratios of stable isotopes; analysis of a material for its distinctive isotopic signature can thus be used to reveal information about its history. Isotope ratio mass spectrometry (IRMS) is a technique used to measure the relative abundance of isotopes in materials. Forensic investigators have used IRMS to measure a variety of materials, such as drugs, explosives, food, and human remains. In a recent web seminar, Lesley Chesson, the president of IsoForensics, Inc., explained how IRMS works and discussed the use of IRMS in forensic science, illustrating her discussion with several case examples.
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Call for Nominations: 2021 Emerging Leader in Atomic SpectroscopySpectroscopy magazine is seeking nominations for the 2021 Emerging Leader in Atomic Spectroscopy Award.The Emerging Leader in Atomic Spectroscopy Award recognizes the achievements and aspirations of a talented young atomic spectroscopist who has made strides early in his or her career toward the advancement of atomic spectroscopy techniques and applications. The winner must be within 10 years of receiving his or her highest academic degree in the year the award is presented.
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Improved Principal Component Discrimination of Commercial Inks Using Surface-Enhanced Resonant Raman ScatteringIn the three decades since its discovery, surface-enhanced Raman scattering (SERS) has been used in numerous applications to increase signal intensity in Raman scattering experiments. The current study provides insight into the more practical aspects of enhanced Raman sampling for laboratory users. We describe how the signal enhancement from a surface-enhanced resonant Raman scattering (SERRS) process improves the ability to discriminate between ink samples using principal component clustering.
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Tech Tip: Choosing Raman Excitation WavelengthsRaman spectroscopy offers a number of benefits for testing and characterization, with the selection of system components and measurement parameters offering great flexibility.
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Portable Raman Spectroscopy in Archaeology and ArtRaman spectroscopy is an important instrument in the arsenal of art conservators and archaeologists. This application note summarizes some recent literature on the selection of portable instruments in this field and also documents some successful work done utilizing background correction to elucidate the composition of some challenging green pigments.
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Matrix-Assisted Laser Desorption-Ionization Imaging Mass Spectrometry for Direct Tissue AnalysisA summary of the most recent advances in sample preparation, instrumentation, and data-processing techniques for MALDI-IMS
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Matrix-Assisted Laser Desorption-Ionization Imaging Mass Spectrometry for Direct Tissue AnalysisA summary of the most recent advances in sample preparation, instrumentation, and data-processing techniques for MALDI-IMS
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Surface Polaritons in Zinc PhosphideDispersion of surface polaritons in zinc phosphide (Zn3P2) single crystals is presented in this article for the first time. Surface polaritons in Zn3P2 were excited using the attenuated total reflectance (ATR) method.
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Surface Polaritons in Zinc PhosphideDispersion of surface polaritons in zinc phosphide (Zn3P2) single crystals is presented in this article for the first time. Surface polaritons in Zn3P2 were excited using the attenuated total reflectance (ATR) method.
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Simultaneous Determination of Inorganic Forms of Arsenic, Antimony, and Thallium by HPLC–ICP–MSA simple and rapid method for the simultaneous separation and determination of the inorganic ionic forms of As(III), As(V), Sb(III), Sb(V), Tl(I), and Tl(III) in river water samples is described.
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A Rapid Extraction Method for Atomic Absorption Spectroscopy Analysis of Zinc Oxide in Cosmetics and Skin Care ProductsZinc oxide levels in cosmetic formulations are commonly analyzed by atomic absorption (AA) spectroscopy using the fusion method for sample digestion, a labor-intensive and time-consuming process that causes lengthy delays in product manufacturing.
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SpaceX Falcon 9 Rocket Carrying ABB-built Methane Detection Optical Sensors Successfully Launched TodayCanadian company GHGSat, which specializes in high-resolution GHG monitoring from space, launched three new ABB-built optical sensors into space aboard a SpaceX Falcon 9 rocket from Cape Canaveral Space Force Station in Florida, USA.
