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Multi-Wavelength Confocal Raman Microscope for Non-Destructive Pharmaceutical Ingredient AnalysisThe characterization of the active pharmaceutical ingredient (API) and its distribution and physical properties in commercial medicine is necessary in drug research and development process in the pharmaceutical industry. Among various analytical techniques employed for this purpose, Raman spectroscopy is gaining more popularity due to its advantages as non-destructive, non-invasive, fast spectrum acquisition in seconds, high reproducibility, and so on.
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Heavy Metals in Pet Food: Changes in Heavy Metal Contamination in Pet Food Over the Past DecadeAnalysis of heavy metals in pet food using ICP–OES was conducted to determine if there were potentially toxic elements present. Many of the samples showed significant concentrations of various toxic metals.
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IC–ICP–MS Speciation Analysis of As in Apple JuiceIn this study, apple juice samples are analyzed by IC–ICP–MS to determine the concentration of six arsenic species: the two inorganic, and highly toxic, species (As (V) and As [III]) and four organic species (arsenobetaine [AsB], arsenocholine [AsC], monomethylarsonic acid [MMA], and dimethylarsinic acid [DMA]).
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Comparison of Quadrupole, Time-of-Flight, and Fourier Transform Mass Analyzers for LC-MS Applications (PDF)The authors investigated the analytical capabilities of three types of mass analyzers for liquid chromatography-mass spectrometry (LC-MS) applications, studying the effects of instrument parameters and issues related to sample preparation on the performance of LC-MS analytical methods.
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Evaluation of Automated Solid-Phase Extraction for Nitrosamines Using US EPA Method 521Disinfection by-products (DBP) are an ever-present nuisance in the efforts to purify drinking water, wastewater, and municipal waters from various sources.
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Analysis of Wear Metals and Additive Package Elements in New and Used Oil Using the Optima 8300 ICP-OES with Flat Plate Plasma TechnologyThe Optima 8x00 ICP-OES series utilizes the new Flat Plate plasma technology that replaces the traditional helical coil design used since the inception of the inductively coupled plasma. The Flat Plate plasma technology, as seen in Figure 1, utilizes two flat induction plates to produce a plasma that is compact, dense, and robust. This plasma utilizes about half the argon required by previous helical coil designs while still delivering exceptional analytical performance.
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An Infrared Investigation of Nail Polish Remover Using Multiple Reflection Diamond ATRMultiple reflection ATR is ideal for detecting miniscule levels of components in solutions. If one component is volatile, trace analysis can be simplified by allowing the volatile liquids to evaporate.
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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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From Bakelite to Biodegradable: Practical Initiatives for Broadband Spectroscopy in Plastic Remediation and ReplacementSpectroscopy plays a critical role in both macroscopic and microscopic plastics detection, which is the first step in remediation, and also in the commercial replacement of plastics with biodegradable materials. This piece provides tangible examples of efforts being made today, including details on spectral hardware implementation, but more importantly provides proposals to the reader on how they can make a meaningful difference in their own world.
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Real-Time Chemometric Analysis of Multicomponent Bioprocesses Using Raman SpectroscopyIn this study, a glycerol-fed, lab-scale E. coli bioprocess producing representative pharmaceutical compounds was monitored offline with a portable, high-sensitivity Raman spectrometer.
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Discrimination of Carbonate-Containing and Carbonate-Free Polyvinyl Chloride with Fourier Transform Infrared Microscopy and Raman SpectroscopyA method is presented using IR and Raman microscopy to discriminate carbonate-containing and carbonate-free PVC that helps forensic scientists trace suspects, avoid wrong certificates of authenticity, and characterize and analyze carbonate components.
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Discrimination of Carbonate-Containing and Carbonate-Free Polyvinyl Chloride with Fourier Transform Infrared Microscopy and Raman SpectroscopyA method is presented using IR and Raman microscopy to discriminate carbonate-containing and carbonate-free PVC that helps forensic scientists trace suspects, avoid wrong certificates of authenticity, and characterize and analyze carbonate components.
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Gold Recovery from Used Ore by EDXRFThe measurement of gold is demonstrated in used ore material such as that from ore dumps and tailing piles. The recovery of uranium from the used ore material is also presented. The results how the Rigaku NEX DE EDXRF can achieve excellent results for monitoring and measuring the concentration of gold and other valuable elements in the recovery of used ore materials.
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2015 Salary Survey: Modest Gains, but Not for EveryoneThe latest Spectroscopy salary survey shows that the average salary has remained essentially static overall, which is welcome news after last year's drop. But not all sectors and groups are doing better.
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Ji-Xin Cheng Wins Pittsburgh Spectroscopy AwardJi-Xin Cheng of Boston University is the winner of the 2020 Pittsburgh Spectroscopy Award, which is presented by the Spectroscopy Society of Pittsburgh, a co-founder of the Pittcon conference. Established in 1957, the award honors an individual who has made outstanding contributions in the field of spectroscopy.
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Rapid and Direct Quantitation of Pharmaceutical Drugs from Urine Using MALDI-MSAn application of MALDI-MS in qualitative and quantitative analysis of pharmaceutical compounds spiked in urine is demonstrated.
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Elemental Analysis Through a Plastic BarrierDemonstration 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.
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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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Quick and Easy Dissolution of Chromite Ores, Ferrochromes, and Chromium Slags for ICP-OES without Using HF or HClO4A new sodium peroxide fusion method is described, as well as the conditions for inductively coupled plasma–optical emission spectrometry, and a list of the accuracy and precision measurements for all prepared samples.
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Shedding Light on DNA Analysis: Multiplexed Detection and Identification Using Fluorescence Lifetime Methods (PDF)This article provides a review of using both time- and phase-resolved fluorescence for DNA analysis in both sequencing and microarray applications.
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A Brief Look at Optical Diffuse Reflection (ODR) SpectroscopyIn this short overview, we consider cases for diffuse reflection spectroscopy and introduce the Kubelka-Munk diffuse reflectance formula. We conclude by comparing diffuse transmittance, diffuse reflectance, logarithmic transforms of both, and the Kubelka-Munk transform for mid-infrared spectroscopy of the same sample.
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Nonconventional Alternatives to LC–MSAn important attribute of a novel ionization process for use in mass spectrometry (MS) is its simplicity and flexibility to be hyphenated to conventional liquid-based separation methods.
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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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Cost-Effective Analysis of Major, Minor, and Trace Elements in Foodstuffs Usint the 4100 MP-AESWhether the goal is food safety, ensuring quality, or establishing provenance, measuring the trace element content of foods and beverages that we all consume is of paramount importance. While some elements are essential for our well being at low concentrations, others like lead and chromium are highly toxic and more still are being linked to viral, neurological, and other diseases. Food scares related to contamination or poor quality not only constitute a health risk, they also undermine consumer confidence. This can lead to lost earnings through reduced sales and loss of credibility through adverse publicity.
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Previewing the Cannabis Science Conferece: Autumn Phillips Discusses Cannabis Testing for Heavy Metals with ICP-OESOne of the Cannabis Science Conference (CSC) Fall speakers is Autumn Phillips, who works as a Research Chemist and Chemical Hygiene Officer at Inorganic Ventures. She shares more about her background in cannabis science in this conference preview.
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Effect of Azimuthal Angle on Infrared Diffuse Reflection Spectra of FabricsInfrared spectroscopy is an appealing technique for application to forensic samples because it offers the benefits of being non-destructive and non-hazardous, fast, reasonably sensitive, and resistant to some of the interferences of many commonly used techniques. Our research team has been focusing on detecting biological fluids on fabrics, which are inherently anisotropic substrates for spectroscopy. The work presented here investigates the effect of azimuthal angle of the sample on the infrared diffuse reflection spectra of fabrics with a goal of removing sampling differences as a source of analytic variation.
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High-Temperature Digestion of Baby Food and Infant Formula for Accurate Analysis of ArsenicWebinar Date/Time: Thu, Nov 14, 2024 12:00 PM EST
