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A Label- and Enzyme-Free Fluorescent Method for the Rapid and Simple Detection of Hg2+ in Cigarettes Using G-Triplexes as the Signal ReporterA novel method was developed for detecting Hg2+ in tobacco, with potential application to mercury detection in environmental water samples.
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A Label- and Enzyme-Free Fluorescent Method for the Rapid and Simple Detection of Hg2+ in Cigarettes Using G-Triplexes as the Signal ReporterA novel method was developed for detecting Hg2+ in tobacco, with potential application to mercury detection in environmental water samples.
Latest:
A Label- and Enzyme-Free Fluorescent Method for the Rapid and Simple Detection of Hg2+ in Cigarettes Using G-Triplexes as the Signal ReporterA novel method was developed for detecting Hg2+ in tobacco, with potential application to mercury detection in environmental water samples.
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Key Points to Remember When Using Internal Standards for Sample Analysis by ICP-OESUsing internal standards is a common technique to correct for variations in sample matrices and the effect this has on analyte intensities. There are several basic criteria to be considered when using internal standards: selection of appropriate internal standards, the concentration added to the solutions analyzed, setting up in the correct view (axial vs. radial), how to introduce the internal standard to the solutions to be analyzed, and evaluating the resulting data. Each of these topics are considered and suggestions presented.
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Analysis of Packaging Material Using Raman and FT-IRThe combination of FT-IR and Raman analyses of sophisticated packaging systems using laminates, is demonstrated.
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Characterization of Lithium Ore Using Laser-Induced Breakdown Spectroscopy (LIBS)This application note demonstrates the uses of LIBS imaging to provide highly selective and sensitive means of gaining this information from lithium-bearing rocks.
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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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Advances in Trace Element Solid Sample Analysis: Laser Ablation Laser Ionization TOF Mass Spectrometry (LALI-TOF-MS)Recent advances in laser ablation laser ionization TOF mass spectrometry (LALI-TOF-MS) are allowing laboratories to reach required limits of quantitation for trace impurities in solid materials by direct analysis, while avoiding common limitations of other techniques.
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Advances in Trace Element Solid Sample Analysis: Laser Ablation Laser Ionization TOF Mass Spectrometry (LALI-TOF-MS)Recent advances in laser ablation laser ionization TOF mass spectrometry (LALI-TOF-MS) are allowing laboratories to reach required limits of quantitation for trace impurities in solid materials by direct analysis, while avoiding common limitations of other techniques.
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Introducing the Mini-BeamMini-Beam is a compact X-ray generator that integrates a polycapillary X-ray optic with a low-powered X-ray source to support various applications across many industries.
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Laser Ablation–Based Chemical Analysis Techniques: A Short ReviewThis review describes the most common approaches to laser ablation-LIBS and LA-ICP-MS-and provides an introduction to laser-ablation molecular isotopic spectrometry.
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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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The Detection of Biomarkers and Cocaine in Fingernails Using Attenuated Total Reflectance Fourier Transform Infrared SpectroscopyATR-FT-IR spectroscopy can provide rapid and portable measurements in forensic applications, demonstrating its ability to rapidly detect biomarkers and the presence of cocaine in fingernails.
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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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The miniDOAS: Low Cost, High Performance Contactless Ammonia MeasurementsKnowledge of atmospheric ammonia concentrations is important, but ammonia is difficult to measure. We report here on the development of a low-cost ammonia measuring differential optical absorption spectroscopy (DOAS) instrument, based on a small sized and low priced spectrograph.
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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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Preliminary Investigation into Raman Spectroscopic Evaluation Of Sulfate in Fluid for Hydraulic FracturingReuse of fracking fluid is contingent on chemical and physical properties, which in turn are related to the chemical composition of the water. Waste water from fracking wells generally has high total solids content often in concert with salts, organic chemicals, metals and naturally-occurring radioactive materials. Often, the water must undergo a cleaning or dilution step before reuse or discharge. An online monitor for high levels of sulfate could be one component of an on-line recycling system of water in hydraulic fracturing processes and this study looks at Raman spectroscopy as a potential measurement technique for such a monitor.
Latest:
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.
