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New Chromatography Columns and accessoriesThis month's installment of "Column Watch" comprises Part II of our yearly report on new products introduced at Pittcon. Gas chromatography columns, sample preparation products, and hardware, accessories, and small tabletop instruments mainly for sample preparation are covered.
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Rapid Bacterial Diagnostics Via Surface-Enhanced Raman MicroscopySERS of bacterial cells can be a useful technique for clinical diagnostics, as illustrated by the analysis of a human urine sample spiked with urinary tract infection bacteria.
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Surface-Enhanced Raman Scattering for Biofilm CharacterizationA summary of the efforts to study microorganism biofilms using surface-enhanced Raman scattering, a powerful technique for in situ analysis of biological molecules and biomolecular organizations
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Observing the Solar Spectrum at House of ScienceAnalysis of the temperature of the photosphere and determine the temperature by students using CCD spectrometers.
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Mercury Determination in Tuna, CRM 463 by USDA Method CLG-MERC1.01 Using the QuickTrace® M-7600 CVAAS Mercury AnalyzerTeledyne Leeman Labs QuickTrace® M7600 was used to analyze and determine total elemental mercury (Hg0) concentration in Tuna (CRM 463) following the guidance in USDA Method CLG-MERC1.01 and the operating conditions.
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Sulfur Determination in Fuels by ICP-OES and ICP-MS to Meet Increasingly Stricter Legislation RequirementsA critical review of the main developments in instrument technology, calibration, and sample preparation that have made it possible to determine low sulfur concentrations in fuels followed by a discussion of strategies to minimize spectral interferences related to sulfur determination by ICP-MS, such as collision–reaction cells, high-resolution mass analyzers, and the interference standard method.
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Reduction of Carbon-Based Interferences in Organic Compound Analysis by Dynamic Reaction Cell ICP MS (PDF)The authors show that dynamic reaction cell ICP MS can eliminate a number of argon- and carbon-based polyatomic interferences, allowing the determination of many critical elements in problematic organic compounds found in the semiconductor industry.
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Observing the Solar Spectrum at House of ScienceAnalysis of the temperature of the photosphere and determine the temperature by students using CCD spectrometers.
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Using the Orbis Micro-XRF Spectrometer to Study the Microstructure of Ancient Roman Seawater ConcreteAncient Roman builders designed maritime concrete harbor structures to remain intact in the aggressive seawater environment for very long periods of time.
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Benchtop WDXRF for Cement AnalysisCement is one of the most important materials in the construction industry. Traditionally, WDXRF spectrometers used in cement plants have been large, floor-standing models with substantial installation requirements and ownership expenses. This application note demonstrates the capabilities of the Rigaku Supermini - a new low-cost, benchtop wavelength dispersive X-ray fluorescence (WDXRF) spectrometer - for the rapid quantitative elemental analysis of cement raw meal.
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Highlights of Our 2022 Review of Spectroscopic InstrumentationHere, we offer highlights of the 2022 Review of Spectroscopic Instrumentation, which appeared in our May issue.
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Accurate Measurement of Ultrafine Silica Nanoparticles Using ICP-MS/MSA method to measure ultrafine silica nanoparticles using ICP-MS/MS to control the elemental and polyatomic ion backgrounds is described here.
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A Dedicated Spectra Database for Multiline Selection in ICP-AESAcquisition and interpretation of a spectra database for ICP-AES analysis are described. The aim is the selection of nanometer-wide spectral windows containing several elements and several lines per element, so as to perform multiline analysis. An automatic line assignment procedure has been used. Information such as wavelength, sensitivity, line width, limit of detection, and level of detector saturation are stored. Filtering procedures are used for line selection, taking into account concentrations and possible spectral interferences.
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Savillex PFA Cyclonic Spray Chamber for ICP-OES and ICP-MSThe 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.
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A Novel Method for Practical Implementation of the Shifted Excitation Raman Difference Spectroscopy (SERDS)SERDS analysis can be easily and successfully carried out using two high-power laser diodes with a fixed-wavelength separation in the presence of high fluorescence.
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Differentiation of Inks Used for Seals by Confocal Raman Microscopy and Fourier Transform Infrared MicroscopyThe analysis of seals, mostly via the ink types, can provide evidence to authenticate the related documents and can play a key role in legal cases. In the present study, a method to discriminate red seal inks using Raman microscopy and Fourier transform infrared (FT-IR) spectroscopy was developed.
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Key Steps in Method Development for Inductively Coupled Plasma–Tandem Mass Spectrometry (ICP-MS/MS)Method development for ICP-MS/MS should not be difficult. The six steps here will guide you to success.
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Agilent Cary 630 Laboratory FTIR and Agilent 4500 Portable FTIR Systems for Detection of Counterfeit PharmaceuticalsThis application note demonstrates the effectiveness of Agilent compact and portable FTIR systems for detecting counterfeit pharmaceuticals with three examples: ethambutol hydrochloride, cephuroxime axetil, and atorvastatin calcium.
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Multi-Quadrupole ICP-MS: Pushing Limits of Detection to the Next DecimalFor a number of elements, spectroscopic interferences can have a significant impact on the ability to achieve low detection limits in ICP-MS. We investigate the mechanisms in multi-quadrupole ICP-MS that are designed to remove these interferences.
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A Novel Method for Practical Implementation of the Shifted Excitation Raman Difference Spectroscopy (SERDS)SERDS analysis can be easily and successfully carried out using two high-power laser diodes with a fixed-wavelength separation in the presence of high fluorescence.
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Comprehensive Fragrance Profiling of Ginger, Wintergreen, and Rosemary Essential Oils by GC–TOF-MS with Soft Electron IonizationThis article investigates the use of gas chromatography–time-of-flight mass spectrometry (GC–TOF MS) to fragrance-profile three essential oils (ginger, wintergreen and rosemary). As well as considering the compositional differences between the oils, we will examine the use of peak deconvolution to identify closely-eluting compounds, and explore the use of soft electron ionization, assisted by comparison of ion ratios, to discriminate between isomeric monoterpenes that are difficult to identify at conventional 70 eV ionization energies due to their very similar mass spectra.
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Rapid Bacterial Diagnostics Via Surface-Enhanced Raman MicroscopySERS of bacterial cells can be a useful technique for clinical diagnostics, as illustrated by the analysis of a human urine sample spiked with urinary tract infection bacteria.
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Raman Spectroscopy as a Quantitative Tool for IndustryThis tutorial demonstrates that Raman is well-suited to tackle two challenges faced by industry: complex mixtures and isomers.
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Combining Thermal Desorption GC and TOF-MS for the Determination of Melon VOC ProfilesThe quality and safety of ready-to-eat packaged foods-such as salads-is very difficult for consumers and suppliers to judge, and improving this situation is the focus of a Europe-wide research project. Part of the project is devoted to the development of better methods to detect and analyze the volatile organic compounds released from relevant food types, in an effort to identify biomarkers for quality and microbial contamination. This article examines one important food (melon) and shows how a method based on thermal desorption (TD) with gas chromatography-time-of-flight-mass spectrometry (GC–TOF-MS) can elucidate how key volatiles vary with time of storage and with the size of the melon pieces. The article highlights how such analytical information will be of value in efforts to improve the quality and safety of ready-to-eat foods.
Latest:
Sulfur Determination in Fuels by ICP-OES and ICP-MS to Meet Increasingly Stricter Legislation RequirementsA critical review of the main developments in instrument technology, calibration, and sample preparation that have made it possible to determine low sulfur concentrations in fuels followed by a discussion of strategies to minimize spectral interferences related to sulfur determination by ICP-MS, such as collision–reaction cells, high-resolution mass analyzers, and the interference standard method.
Latest:
A Novel Method for Practical Implementation of the Shifted Excitation Raman Difference Spectroscopy (SERDS)SERDS analysis can be easily and successfully carried out using two high-power laser diodes with a fixed-wavelength separation in the presence of high fluorescence.
