A recent conversation with Kevin Wilkinson, a professor of environmental chemistry at the Université de Montréal, sheds light on why no single signature can separate engineered nanoparticles from natural ones.
|Articles|May 1, 2010
- Special Issues-05-01-2010
- Volume 0
- Issue 0
Product Resources
Thermo Fisher Scientific's isotope ratio mass spectrometry (IRMS) system is designed to enhance laboratory productivity, confirm the authenticity of food and beverage samples, and detect counterfeit products. According to the company, the automated system combines its DELTA V series IRMS system, ConFlo IV Universal Interface, TRACE GC Ultra system, and Flash HT Plus elemental analyzer. The combination reportedly offers a simplified workflow requiring minimal sample preparation and handling.
Advertisement
IRMS system
Thermo Fisher Scientific's isotope ratio mass spectrometry (IRMS) system is designed to enhance laboratory productivity, confirm the authenticity of food and beverage samples, and detect counterfeit products. According to the company, the automated system combines its DELTA V series IRMS system, ConFlo IV Universal Interface, TRACE GC Ultra system, and Flash HT Plus elemental analyzer. The combination reportedly offers a simplified workflow requiring minimal sample preparation and handling.
Thermo Fisher Scientific, Inc, Waltham, MA;
Ion-trap mass spectrometer
Bruker's amaZon SL ion-trap mass spectrometer is designed to increase analytical capabilities and productivity for laboratories involved with detailed structural analysis of all types of molecules. According to the company, the system features automated and intuitive software, a fast data acquisition speed at full isotopic resolution in both MS and MS-MS for use with UHPLC, on-the-fly polarity switching for analysis of a diverse set of compounds, and optimal, highly reproducible fragmentation efficiency to help identify unknown compounds.
Bruker Daltonics, Inc., Billerica, MA;
Microchannel plate detectors
PHOTONIS' TruFlite microchannel plates and detector assemblies are designed for time-of-flight MS measurements. The plates' input surface reportedly reduces uncertainty in ion arrival time, or time jitter, and surface flatness is measured and controlled. According to the company, the pore size and bias angle are optimized to improve mass detection. The microchannel plates and detectors are available with 18-mm and 25-mm active areas.
PHOTONIS USA, Sturbridge, MA;
LC–MS system
Agilent's 6150B series single-quadrupole liquid chromatograph–mass spectrometer is designed to provide higher sample throughput and can scan at 10,000 amu/s. According to the company, the system's sample inlet design uses superheated sheath gas to focus the ion stream entering the mass spectrometer, which provides a stronger signal with lower standard deviation at the limit of detection. The ionization technique reportedly enables efficient ionization for a broader range of compounds than electrospray or atmospheric pressure ionization alone.
Agilent Technologies, Inc., Santa Clara, CA.
Application guide
Dionex Corporation has published an updated version of its "MS Applications Guide." According to the company, the update provides 12 new environmental and industrial applications, including urea in ultrapure water, carbamates in water, alkylphenol ethoxylates, phenolic acids, FA and TFA, nicotine and metabolites, glyphosates, perchlorate in baby formula and milk, melamine and cyanuric acid, and ionic liquids by IC–MS and LC–MS.
Dionex Corporation, Sunnyvale, CA;
Mass spectrometer
The Waters SYNAPT G2 mass spectrometer is designed for use in biopharmaceutical, metabolite identification, metabonomics, proteomics, biomarker studies, and food and environmental applications. According to the company, the quadrupole time-of-flight system features greater than 40,000 FWHM resolution, high sensitivity, a data acquisition rate of 20 spectra/s, exact mass (1 ppm RMS) information, and a dynamic range of up to five orders of magnitude.
Waters Corporation, Milford, MA;
Portable GC–MS system
Torion's GUARDION-7 portable GC-torodial MS system features electronic pressure control of the helium carrier gas and is available with rechargeable batteries for longer field operating times. According to the company, the system weighs less then 30 lb, is the size of a brief case, operates on battery power, and has an on-board helium carrier cartridge.
Torion Technologies Inc., American Fork, UT.
UHPLC–MS columns
Optimize Technologies' hand-tight OPTI-TRAP EXP trap columns are sample purification and preconcentration products designed for use at pressures as high as 20,000 psi (1400 bar). According to the company, the columns can connect directly to any injection valve (with 10–32 threads) or in-line with the company's OPTI-LOK EXP fittings.
Optimize Technologies, Inc., Oregon City, OR.
Articles in this issue
over 16 years ago
Enhancing Mass Spectral Formula Determination by Heuristic Rulesover 16 years ago
Ultralow Detection of Estrogenic Compounds by GC–NCI-MS-MSover 16 years ago
TOF-MS: A Viable Solution for Crude Oil Extract Analysisover 16 years ago
58th ASMS Conference Previewover 16 years ago
The Exception to the Conference Industry's Ruleover 16 years ago
Branching Out: Mass Spectrometry and the Shape of BiotherapeuticsAdvertisement
Related to this article
Top articles include the publication of a new terminology guide focused on data processing, machine learning, artificial intelligence (AI), and chemometrics.
This column shows that a Raman plate reader paired with partial least squares regression can simultaneously quantify glucose, fructose, sucrose, and ethanol in yeast fermentation samples, using turbidity-matched calibration standards to correct for yeast-induced turbidity, and offers a rapid, label-free, high-throughput method for tracking sugar consumption and ethanol production in strain screening, media optimization, and process development.
This column, the second installment on highly substituted benzene rings, shows that tri- and tetra-substituted substitution patterns can be distinguished by whether the ring bending peak is present and by the position of the in-phase aryl C-H wagging peak, which shifts according to how many adjacent hydrogens the ring carries.
How do ions and water interact at the atomic level in nanochannels grafted with polymer brushes using all-atom molecular dynamics simulations? Siddhartha Das of the University of Maryland and his team are working on answering this question.
Mammograms can find breast microcalcifications but can’t tell whether they are likely benign or malignant.
In a SciX interview, Marc Porter covered a lot of ground, from a student-driven pivot into immunoassays to a baseball analogy for Stokes and anti-Stokes scattering, and shares the open questions he is still chasing.
Laser-induced breakdown spectroscopy (LIBS) is being used in numerous application areas, including environmental monitoring, cultural heritage, and space exploration.
Advertisement
Advertisement