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GC–MS and UHPLC–MS-MS Analysis of Organic Contaminants and Hormones in Whale Earwax Using Selective Pressurized Liquid ExtractionThis work addresses two challenges: developing a technique capable of measuring ppb levels of hormones, and developing an SPLE technique capable of extracting contaminants and hormones from a single sample without additional cleanup steps.
Latest:
GC–MS and UHPLC–MS-MS Analysis of Organic Contaminants and Hormones in Whale Earwax Using Selective Pressurized Liquid ExtractionThis work addresses two challenges: developing a technique capable of measuring ppb levels of hormones, and developing an SPLE technique capable of extracting contaminants and hormones from a single sample without additional cleanup steps.
Latest:
Analysis of Organometallic Compounds and Metallic Particles in Specialty Gases by Direct Injection Using Gas Exchange Device (GED) Coupled to Inductively Coupled Plasma–Mass Spectrometry (ICP-MS)In this article, we introduce the concept of a gas exchange device (GED) and how it can be used to monitor organometallic compounds and metallic particles in specialty gases.
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Advanced Structural Mass Spectrometry for Systems Biology: Pulling the Needles from HaystacksIon mobility–mass spectrometry (IM-MS) is outlined as a separations method, several examples of the utility of IM-MS for complex biological measurements are illustrated, and the implications of this approach for systems biology research are discussed.
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Validation of Horizon Technology Disk Extraction Technology for US EPA Wastewater Method 625.1This application note will present the data collected as part of the demonstration of disk solid phase extraction validation for US EPA method 625.1.
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Advanced Structural Mass Spectrometry for Systems Biology: Pulling the Needles from HaystacksIon mobility–mass spectrometry (IM-MS) is outlined as a separations method, several examples of the utility of IM-MS for complex biological measurements are illustrated, and the implications of this approach for systems biology research are discussed.
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Performance Characteristics of a PFA Cyclonic Spray Chamber with HR ICP-MSA PFA cyclonic spray chamber was used with an HR-ICP-MS for the measurement of trace element/calcium ratios in foraminiferal calcite. The signal stability and washout were studied.
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Performance Characteristics of a PFA Cyclonic Spray Chamber with HR ICP-MSElemental ratio determinations in foraminiferal calcite require the measurement of trace levels of Na, Mg, Sr, and ultra-trace levels of Li, B, Ba, Cd, Mn, U in a calcium rich matrix and ratioed to calcium.
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Miniature 60 kV, 1000 μA 12 W X-ray SourceMoxtek's MAGPRO miniature X-ray source is capable of up to 60 kV 200 µA and down to 4 kV and 1000 µA, and limited to an output power of 12 watts. The 12 W source is meant for use in small bench top systems where small size is valued.
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Simple Method for Sensitivity Comparison of Raman Spectroscopic InstrumentsThere is a need for a simple method that can be used to compare sensitivities of commercially available Raman instruments, especially in the demonstration and evaluation process. This short application note will address this need, with an easy method and non-toxic materials.
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140 kV Handheld X-ray SourcesThe Mox 140 kV X-ray source weighs less than 1900 grams and runs at 7 Watts X-ray tube power. Applications include X-ray spectroscopy, backscatter, and X-ray imaging.
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Modeling and Monitoring of Time-Dependent Processes with Spectroscopic TechniquesSpectroscopic techniques have a long history as quantitative methods for on-line and at-line use in a wide range of industries, where, in many cases, they are more accurate than the reference methods. These processes are typically continuous, but time-depending processes such as batch processes are widely used in many industries.
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Rapid Evaluation of Extra Virgin Olive Oil Using Fluorescence SpectraStrict production requirements, consumer demand, and at times poor harvests, result in high prices and can limit the supply of EVOO. Consequently, EVOO is susceptible to economically motivated adulteration with less expensive oils and claims of authenticity continue to be a concern.
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Integrating FT-IR and FT-Raman for the Pharmaceutical IndustryInfrared and Raman spectroscopy are critical analytical techniques in the pharmaceutical industry, used for the structural elucidation and characterization of organic materials such as new drug candidates, impurities, metabolites, and excipients.
Latest:
Rapid Evaluation of Extra Virgin Olive Oil Using Fluorescence SpectraStrict production requirements, consumer demand, and at times poor harvests, result in high prices and can limit the supply of EVOO. Consequently, EVOO is susceptible to economically motivated adulteration with less expensive oils and claims of authenticity continue to be a concern.
Latest:
Modeling and Monitoring of Time-Dependent Processes with Spectroscopic TechniquesSpectroscopic techniques have a long history as quantitative methods for on-line and at-line use in a wide range of industries, where, in many cases, they are more accurate than the reference methods. These processes are typically continuous, but time-depending processes such as batch processes are widely used in many industries.
Latest:
Implementation of MicroNIR PAT for Blend MonitoringA wireless NIR spectrometer is deployed on solid dose blending formulation for end-point monitoring. The MicroNIR PAT is democratizing the use NIR spectroscopy in pharmaceutical manufacturing facilitating Quality by Design (QbD) adoption.
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Pesticide and Mycotoxin Analysis: Mastering the Complexity of the Cannabis MatrixThe method described here allows for the simultaneous analysis of 47 pesticides and five mycotoxins in cannabis in one simple QuEChERS procedure. This simple method is designed for implementation in start-up laboratories and in established laboratories that wish to streamline their sample preparation process, decrease solvent usage, and obtain accurate and fast results.
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Multi-Toxin Determination in Food: The Power of “Dilute and Shoot” Approaches in LC–MS–MSThis article provides useful tips for smooth validation of multi-analyte LC–MS-MS methods and summarizes important validation outcomes for 295 analytes, including more than 200 mycotoxins.
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Multi-Toxin Determination in Food: The Power of “Dilute and Shoot” Approaches in LC–MS–MSThis article provides useful tips for smooth validation of multi-analyte LC–MS-MS methods and summarizes important validation outcomes for 295 analytes, including more than 200 mycotoxins.
Latest:
Multi-Toxin Determination in Food: The Power of “Dilute and Shoot” Approaches in LC–MS–MSThis article provides useful tips for smooth validation of multi-analyte LC–MS-MS methods and summarizes important validation outcomes for 295 analytes, including more than 200 mycotoxins.
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Agricultural and Environmental Management with Raman SpectroscopyRaman spectroscopy is applied to quality control of agricultural products with greater frequency, and can also be used to refine regulatory criteria for both agricultural and environmental monitoring. It is now integrated into everything from hand held SERS detectors to unmanned aerial vehicles to monitor the gamut from genetic variation to soil and water content. Development opportunities, particularly with bundled technologies, continue to emerge as demand for quality assurance increases.
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Raman Spectroscopy in Process ControlRaman spectroscopy has gained a lot of interest in recent years. Capable of yielding chemical identification/quantification information, it is a possible alternative to the more wide-spread, complimentary techniques of FT-IR and near-IR spectroscopy. tec5USA specializes in UV-VIS-NIR and Raman spectroscopic instrumentation for process control. Their Systems Product Manager discusses Raman spectroscopy and some of the challenges of incorporating this method into process control.
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Nontargeted Metabolite Profiling in Next-Generation Plant Breeding: A Case Study in Malting BarleyThe power of nontargeted metabolite profiling is illustrated in a study focused on the determination of molecular markers in malting barley that are predictive of desirable malting quality for brewing applications. The metabolite extraction, detection, and analysis methods are highthroughput and reproducible, and therefore, this approach represents a practical addition to the plant breeder’s molecular toolbox.
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Measurement of Gold Nanoparticle Solutions on LAMBDA 265 Personal Array UV/Vis SpectrophotometerLearn how to measure properties of Gold Nanoparticles that have unique optical, electronic, and thermal properties and used in a wide range of applications including diagnostics assays, microscopy and electronics.
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Sample Preparation Method for Mercury Analysis in Reagent Chemicals by ICP-OESEfficient and accurate measurement of mercury concentration is a challenge. A direct sample preparation method for reliable ICP-OES mercury measurement would be invaluable to chemical manufacturers, testing laboratories, and other industries. Historically, ICP-OES Hg measurements have been plagued by poor Hg detection limits, severe carryover effects, and sample instability. In this study, we present a method of sample preparation for ICP-OES mercury analysis in various reagent chemical compounds. This sample preparation method is straightforward and direct, allowing mercury analysis in a variety of reagent chemicals without digestion.
Latest:
Sample Preparation Method for Mercury Analysis in Reagent Chemicals by ICP-OESEfficient and accurate measurement of mercury concentration is a challenge. A direct sample preparation method for reliable ICP-OES mercury measurement would be invaluable to chemical manufacturers, testing laboratories, and other industries. Historically, ICP-OES Hg measurements have been plagued by poor Hg detection limits, severe carryover effects, and sample instability. In this study, we present a method of sample preparation for ICP-OES mercury analysis in various reagent chemical compounds. This sample preparation method is straightforward and direct, allowing mercury analysis in a variety of reagent chemicals without digestion.
Latest:
Sample Preparation Method for Mercury Analysis in Reagent Chemicals by ICP-OESEfficient and accurate measurement of mercury concentration is a challenge. A direct sample preparation method for reliable ICP-OES mercury measurement would be invaluable to chemical manufacturers, testing laboratories, and other industries. Historically, ICP-OES Hg measurements have been plagued by poor Hg detection limits, severe carryover effects, and sample instability. In this study, we present a method of sample preparation for ICP-OES mercury analysis in various reagent chemical compounds. This sample preparation method is straightforward and direct, allowing mercury analysis in a variety of reagent chemicals without digestion.
