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Validation of HPLC analytical method for determination of biogenic amines in agricultural products
Hyeock Yoon, Jae-Hyung Mah

An analytical method was validated for the quantitative determination of biogenic amines (BA) in agricultural products. The validation results fulfill AOAC criteria and recommendations. This method has been applying to analyze BA in agricultural products for a total dietary survey in Korea.

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Non-target Screening of Contaminants in Paper-paperboard for Food Contact Materials
Lukas Vapenka*, Adam Vavrous**, Lenka Votavova*, Kristina Kejlova**, Jaroslav Dobias*, Jitka Sosnovcova**

The aim of this work was non-targeted screening of xenobiotics in paper and paperboard packaging materials used for food packaging in the Czech Republic.

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Development of an Analytical Strategy for Simultaneous Determination of Multiple Contaminants in Paper Food Packaging
Adam Vavrouš (1), Lukáš Vápenka (2), Kristina Kejlová (1), Jitka Sosnovcová (1), Dagmar Jírová (1)

We developed a method for simultaneous determination of polycyclic aromatic hydrocarbons, polyfluorinated compounds, ink photoinitiators, phthalates and bisphenols in paper food packaging employing GC–MS/MS and HPLC–MS/MS.

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METHOD DEVELOPMENT FOR THE SIMULTANEOUS DETERMINATION OF METHYLMERCURY AND INORGANIC MERCURY IN SEAFOOD
Sergio Carneado, Ariane V. Zmozinski, Carmen Ibáñez-Palomino, Àngels Sahuquillo, José Fermín López-Sánchez, Márcia M. da Silva

This work reports the method development for the simultaneous determination of methylmercury (MeHg+) and inorganic mercury (iHg) species in seafood. The study focused on the extraction and quantification of MeHg+ by liquid chromatography coupled to on-line UV irradiation and cold vapour atomic fluorescence spectroscopy (LC-UV-HG-AFS), using HCl 4 mol L-1 as extractant agent.

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Comprehensive and Confident Identification of Narcotics, Steroids, and Pharamaceuticals in Urine
David E. Alonso, Petra Gerhards, Charles Lyle, and Joe Binkley

-GC-HRT analysis provides an effectual “molecular profile” of samples
-Confident compound identification through spectral similarity searches & robust formula determinations for fragment, molecular and adduct ions

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Leveraging CI-H Mass Defect Plots for the Identification of Halogenated Organic Contaminants
Jonathan D. Byer, Mehran Alaee, Karl Jobst, Grazina Pacepavicius, Joe Binkley

A number of legacy contaminants and other pesticides, as well as a number of previously unknown compounds were tentatively identified in the pooled sample. Cl-H mass defect plots are a useful tool for filtering through complex data for the identification of halogenated contaminants. This technique functions as a screening tool for the identification of unknowns, and in the future, may be used as a form of fingerprinting to compare samples.

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Flash Pyrolysis Coupled to GCxGC-TOFMS and GC-High Resolution TOFMS for Characterization of Crude Oil and Petroleum Fractions
Clecio F. Klitzke, Joe Binkley, Jeffrey Patrick

The pyrolysis of asphaltenes from discrete crude oil samples shows distinct composition in terms of light and heavy aromatic hydrocarbons and alkyldibenzo-thiophenes. The use of Py–GC×GC–TOFMS is crucial for the determination of isomeric composition, and Py–GC–HRTOFMS with high resolution and high mass accuracy complements the identification by unequivocal chemical formula assignments. The study of the relationships of the crude oil and asphaltene composition are in progress.

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Analysis of Low Levels of Bisphenol A (BPA) in Canned Broths
Ken G. Espenschied, Michael Ye, Olga I. Shimelis, and Christine Dumas

Bisphenol A (BPA) is a primary monomer used in the manufacture of many plastics and epoxies. Some of these plastics are used as beverage containers and as liners and sealants for metal food containers. Because of BPA’s potential to act as an endocrine disrupter at low concentrations in humans, regulations have been enacted regarding BPA concentrations in food and beverages sold for human consumption.

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Fast and Efficient Analysis of Polynuclear Aromatic Hydrocarbons in Edible Oils Using Dual-Layer SPE
Christine Dumas and Katherine Stenerson

A new dual-layer cartridge for the efficient extraction of PAHs from edible oils

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Showing Results 51 - 60 of 200
Scientific News
ASMS 2016: Targeting Mass Spectrometry Tools for the Masses
The expanding application range of MS in life sciences, food, energy, and health sciences research was highlighted at this year's ASMS meeting in San Antonio, Texas.
What Makes a Good Scientist?
It’s the journey, not just the destination that counts as a scientist when conducting research.
A New Tool Brings Personalized Medicine Closer
Scientists from EPFL and ETHZ have developed a powerful tool for exploring and determining the inherent biological differences between individuals, which overcomes a major hurdle for personalized medicine.
Rapid Retrieval of Live, Infectious Pathogens from Clinical Samples
An engineered pathogen-binding protein enables rapid isolation of infectious bacteria from joint fluids and accelerates their identification.
Getting a Better Look at How HIV Infects and Takes Over its Host Cells
A new approach, developed by a team of researchers led by The Rockefeller University and The Aaron Diamond AIDS Research Center (ADARC), offers an unprecedented view of how a virus infects and appropriates a host cell, step by step.
Detecting Fake Parmesan Cheeses
Scientists report on a way to catch adulteration of the regional artisanal products.
The Need for Speed
Evaluating MALDI-TOF as a high-throughput screening technology for the pharmaceutical industry.
Process Analysis in Real Time
With a real-time mass spectrometer developed by Fraunhofer researchers, it has become possible for the first time to analyze up to 30 components simultaneously from the gas phase and a liquid, including in-situ analysis.
Triple-Negative Breast Cancer Target Is Found
Researchers at UC Berkeley discover a target that drives cancer metabolism in triple-negative breast cancer.
Plasma Biomarkers for Breast Cancer Diagnosis
Plasma lipidomics profiling identified lipid biomarkers in distinguishing early-stage breast cancer from benign lesions.
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