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High Performance ICP-OES Sample Introduction: How to Choose and Use the Best Nebulizer for Your AnalysisNebulizer selection is a critical but often overlooked aspect of inductively coupled plasma–optical emission spectroscopy (ICP-OES) analyses. There are many different nebulizers available for ICP-OES, and choosing the optimal one can be confusing and difficult. To achieve peak performance from your ICP, it is essential to choose the proper nebulizer based on your sample types in addition to any necessary accessories to maintain long-term performance. In this study, we compare the performance of Glass Expansion’s most popular concentric nebulizer designs for ICP-OES applications as well as a parallel-path nebulizer from another vendor, providing a complete selection guide based on performance and design.
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SEC–ICP-OES Hyphenation: Speciation and Quantification of Polydimethylsiloxanes at Trace LevelsPolydimethylsiloxane (PDMS) compounds are ubiquitous; thus it is challenging to develop analytical methods that ensure their absence. A newly developed method combining sizeexclusion chromatography with inductively coupled plasma–optical emission spectroscopy makes it possible to quantify ultratrace levels of PDMS in volatile and nonvolatile organic solvents. A complete range of molecular weights can also be distinguished with this approach.
Latest:
SEC–ICP-OES Hyphenation: Speciation and Quantification of Polydimethylsiloxanes at Trace LevelsPolydimethylsiloxane (PDMS) compounds are ubiquitous; thus it is challenging to develop analytical methods that ensure their absence. A newly developed method combining sizeexclusion chromatography with inductively coupled plasma–optical emission spectroscopy makes it possible to quantify ultratrace levels of PDMS in volatile and nonvolatile organic solvents. A complete range of molecular weights can also be distinguished with this approach.
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Where Perception Meets Reality: The Science of Measuring ColorAccurately measuring and quantifying the perception of color is an ongoing challenge for scientists, but understanding spectroscopic techniques can help standardize color measurements.
Latest:
SEC–ICP-OES Hyphenation: Speciation and Quantification of Polydimethylsiloxanes at Trace LevelsPolydimethylsiloxane (PDMS) compounds are ubiquitous; thus it is challenging to develop analytical methods that ensure their absence. A newly developed method combining sizeexclusion chromatography with inductively coupled plasma–optical emission spectroscopy makes it possible to quantify ultratrace levels of PDMS in volatile and nonvolatile organic solvents. A complete range of molecular weights can also be distinguished with this approach.
Latest:
SEC–ICP-OES Hyphenation: Speciation and Quantification of Polydimethylsiloxanes at Trace LevelsPolydimethylsiloxane (PDMS) compounds are ubiquitous; thus it is challenging to develop analytical methods that ensure their absence. A newly developed method combining sizeexclusion chromatography with inductively coupled plasma–optical emission spectroscopy makes it possible to quantify ultratrace levels of PDMS in volatile and nonvolatile organic solvents. A complete range of molecular weights can also be distinguished with this approach.
Latest:
SEC–ICP-OES Hyphenation: Speciation and Quantification of Polydimethylsiloxanes at Trace LevelsPolydimethylsiloxane (PDMS) compounds are ubiquitous; thus it is challenging to develop analytical methods that ensure their absence. A newly developed method combining sizeexclusion chromatography with inductively coupled plasma–optical emission spectroscopy makes it possible to quantify ultratrace levels of PDMS in volatile and nonvolatile organic solvents. A complete range of molecular weights can also be distinguished with this approach.
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The Use of Raman Spectroscopy in Cancer DiagnosticsBoth Raman spectroscopy and surface-enhanced Raman spectroscopy (SERS) are proving to be invaluable tools in the field of biomedical research and clinical diagnostics.
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Quantification of the Soluble Solids Content of Intact Apples by Vis–NIR Transmittance Spectroscopy and the LS-SVM MethodThe feasibility of quantifying the soluble solids content of intact apples was investigated by visible and near infrared (vis–NIR) transmittance spectroscopy combined with the least squares support vector machines (LS-SVM) method. The spectra were pretreated by Savitzky-Golay smoothing, first and second derivatives, standard normal variate transformation, and multiplicative scatter correction.
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Disinfection of Tetraselmis sp. with UV LED ApplicationAnalyzing the effect of UV LED modules on disinfecting ballast water using UV–vis spectroscopy.
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A Convenient Alternative to MALDI and ESIAs was demonstrated by ESI and MALDI, and, more recently, ambient ionization approaches, successful new ionization methods can have an enormous impact on science. Novel ionization processes, such as inlet and vacuum ionization, are some of the latest of these approaches, and provide excellent alternatives to traditional approaches.
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Handheld FT-IR Spectroscopy for the Triage of Micro- and Meso-Sized Plastics in the Marine Environment Incorporating an Accelerated Weathering Study and an Aging EstimationFour of the most prevalent commodity plastics were analyzed on-site using handheld FT-IR spectroscopy to determine changes correlated with accelerated weathering in the marine environment.
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Handheld FT-IR Spectroscopy for the Triage of Micro- and Meso-Sized Plastics in the Marine Environment Incorporating an Accelerated Weathering Study and an Aging EstimationFour of the most prevalent commodity plastics were analyzed on-site using handheld FT-IR spectroscopy to determine changes correlated with accelerated weathering in the marine environment.
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Handheld FT-IR Spectroscopy for the Triage of Micro- and Meso-Sized Plastics in the Marine Environment Incorporating an Accelerated Weathering Study and an Aging EstimationFour of the most prevalent commodity plastics were analyzed on-site using handheld FT-IR spectroscopy to determine changes correlated with accelerated weathering in the marine environment.
Latest:
Handheld FT-IR Spectroscopy for the Triage of Micro- and Meso-Sized Plastics in the Marine Environment Incorporating an Accelerated Weathering Study and an Aging EstimationFour of the most prevalent commodity plastics were analyzed on-site using handheld FT-IR spectroscopy to determine changes correlated with accelerated weathering in the marine environment.
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Advances in XRF and ICP-OES Analysis for Plant Tissue and Soil Analysis Including CannabisAgronomic analyses for materials such as soils, plant tissues, and Cannabis can present considerable challenges, even for today’s spectrometers. Many analyzers currently on the market may fall short of satisfactory performance. Learn how new advances in ICP-OES technology can greatly benefit your analysis of soils, plants and Cannabis samples and how the introduction of ED-XRF analysis can simplify sample preparation and increase productivity for nutrient and heavy metal analysis. Live: Wednesday, Feb. 26, 2020 at 1pm EST | 12pm CST | 10am PST On demand available after airing until Feb. 26, 2021 Register free
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Infrared Spectroscopy: New Frontiers Both Near and FarExploration of the chemistry of materials at micrometer and nanometer scales leads to a better macroscopic perspective, as illustrated here with examples from our ongoing research in materials, environmental, and biomedical applications
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Infrared Spectroscopy: New Frontiers Both Near and FarExploration of the chemistry of materials at micrometer and nanometer scales leads to a better macroscopic perspective, as illustrated here with examples from our ongoing research in materials, environmental, and biomedical applications
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Raman Spectroscopy of Supported Lipid Bilayer NanoparticlesRaman spectroscopy (weak H2O Raman scattering) has been a tool of choice for investigating aqueous lipid suspensions. Recently, there has been interest in supported lipid bilayers (SLBs), where lipids are believed to have fluidities similar to those of free vesicles, and thus have been investigated for applications such as sensors and drug delivery vehicles. Here, Raman spectra of two lipid SLBs on SiO2 nanoparticles were obtained. With decreasing nanoparticle size, or for the same nanoparticle size and longer alkyl chain length, the lipids became increasingly interdigitated compared with the normal bilayer structure.
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Looking Below the Surface of Breast Tissue During SurgeryIn this article, we present a method that provides prompt detection of the presence of cancer cells inside the 2-mm margin of tissue surrounding the tumor after excision using spatially offset Raman spectroscopy (SORS). SORS was developed to detect subtle changes in soft tissue spectra in the 100–2000 ?m range and tested on excised breast tissues. The results display a very high specificity and sensitivity (100% and 95%, respectively) of classification between positive and negative tumor margins. SORS is a clinically feasible method, suitable for the real-time, intraoperative assessment of tumor margins at the micrometer level.
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Raman Spectroscopy and PolymorphismThe differentiation of polymorphs is important, particularly in the pharmaceutical industry. We demonstrate the practicality of using Raman spectroscopy to differentiate crystal forms for polymorph characterization and screening, and explain aspects of chemical bonding and solid state structure that affect the Raman spectra of crystal lattice vibrational modes.
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Solid-Phase Extraction of US EPA 535 for Chloroacetanilide and Acetamide Degradates in Drinking Water Samples Prior to Liquid Chromatography/Tandem Mass SpectrometryThe US EPA has implemented an exposure research program aimed at conducting drinking water research on methods as part of the Microbiological and Chemical Exposure Assessment. This research is aimed at evaluating the chemical pollutants and their role and levels in which there is an unacceptable risk to either humans or wildlife, as well as evaluating the methodologies currently being used to determine levels of chemical pollutants.
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Organic Nitrogen Compounds II: Primary AminesAmines, which contain carbon, hydrogen, and nitrogen, come in six varieties, but using the N-H stretching peak positions by themselves will distinguish between all the different amine types.
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New Spectroscopic Evidence of Hydrothermal Activity on Mars Revealed by Perseverance RoverUsing LIBS, infrared, and Raman spectroscopic techniques scientists detect quartz and hydrated silica, hinting at past Martian water activity and potential biosignatures
