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Congresso Analitica - 2015
Using triple quadrupole GC-MS in Full Scan, SIM, SRM, and mixed scan modes to provide the highest coverage for target and non-target analysis of contaminants This work describes how triple quadrupole gas chromatography-mass spectrometry (GC-MS) systems can be used in single quadrupole modes to satisfy current regulations as well … |
Screening and quantitation of micro-pollutants from sewage water in the process of bank filtration using UHPLC-HRAM MS Screening for and quantitation of micropollutants in ground water was carried out along a transect at the lake Tegeler See in the city of Berlin, Germany. The analyses were done by … |
 Enhanced crude oil fingerprinting by GC×GC–TOF MS with soft electron ionization
Chemical fingerprinting of crude oil is important for identification of isomers that may have an adverse effect on engine performance and of those responsible for environmental … |
 Passive monitoring of benzene and other hazardous air pollutants in accordance with US EPA Method 325
A stepwise approach for volatile organic compounds (VOCs) passive (diffusive) monitoring used in occupational hygiene/personal exposure, indoor air, and ambient air/large-scale … |
 New advances in environmental air monitoring
An automatic cryogen-free system designed to offer flexibility of sampling methodology to the environmental air monitoring is presented. Volatile organic … |
 Next-generation laboratory solutions for VOC air monitoring
Air pollution remains a global concern, and there is increasing pressure on analytical laboratories to provide analyses at ever-lower detection limits without compromising overall analysis time … |
 Monitoring Siloxanes in Biogas using Thermal Desorption Tube Sampling
For the use of biogas as fuel, it is necessary to remove impurities like the siloxanes that can cause significant operational problems in engines. The selection of an efficient sampling … |
 Determination of (E)-2-nonenal in beer using Purge & Trap Extraction and Gas Chromatographic coupled to Mass Spectrometry
A new method to determine (E)-2-nonenal in beer was develop. The Purge & Trap technique was used where liquid samples are continually purged by an inert gas … |
 Determination of highly polar pesticide residues in food of plant origin by an automated QUPPE Method
The QuEChERS (Quick-Easy-Cheap-Effective-Rugged-Safe) sample extraction method has been applied for the extraction of many different classes of pesticides, with one exception … |
 Pesticide analysis using QUECHERS extraction: A comparison of manual and automated approaches
The QuEChERS (Quick-Easy-Cheap-Effective-Rugged-Safe) extraction method is a simple and fast extraction when compared to traditional semi-volatile extraction … |
 Determination of pesticide residues in oranges by an automated QUECHERS extraction
With the rise in popularity of QuEChERS (Quick, Easy, Cheap, Effective, Rugged, and Safe) due to its reliable multiresidue methods it has driven the need for automation of this extraction method to increase … |
 Instant connect gas sampling valve module – Introducing a new flexibility in gas sampling for GC and GC-MS
This work describes a new modular concept for gas chromatograph instrument (GC) that was undertaken to integrate latest valve technology, into a handling, plug-in module … |
 Automated, rapid and reliable determination of dissolved gases in water by static Headspace – Gas Chromatography
A method for the quantitative determination of dissolved gases in water by headspace sampling and gas chromatography analysis with flame ionization detector (FID) was developed … |
 An innovative, reliable, easy set-up for the analysis of permanent gases via PDD and gas sampling valve
The performance of an instant connect Pulsed Discharge Detector (PDD) and a gas sampling valve modules, installed in a gas chromatograph based on a new modular concept … |
 Automation of beer and wort total polyphenol determination according to EBC / MEBAK protocol
The European Brewery Convention (EBC) protocol to measure total polyphenols in beer and wort samples was automated using a discrete photometric analyzer. Seven beer samples were … |
 Bitterness analysis of reduced iso-alpha acids by a new fully automated method
A novel approach for bitterness analysis based on a fully automated method was developed. An automated discrete photometric analyzer was used in a environmental friendly method … |
 Rapid Automatic Analysis of Acids in Juice Using a Discrete Analyzer
An automated, discrete photometric system was used to simultaneously measure a multiple acid test panel for acetic acid, L-ascorbic acid, citric acid, D-isocitric acid, D-lactic a … |
 Isolation of vanillin from vanilla extract by a combination of Flash and Preparative HPLC
Phenolic flavonoids present in natural products have been shown to be promising therapeutics for the treatment and management of many medical maladies, including cancer, cardiovascular … |
 Determinação de PCBs em fluidos isolantes com extração em fase sólida miniaturizada e automática
Um novo sistema de extração em fase sólida (SPE) foi avaliado para a extração de bifenilas policloradas (PCBs) presentes em fluidos isolantes de transformadores de transmissão … |
SBQ - 2015
Caracterização físico-química de biofertilizantes oriundos da vermicompostagem Com o intuito de reduzir o uso de produtos químicos na agricultura, vem se estudando alternativas mais naturais para fertilização da lavoura. Muitos desses estudos dizem respeito … |
EspeQBrasil - 2014
Avaliação de um novo agente ligante preparado a partir da borra do café para a técnica DGT: especiação de Pb e Zn A técnica de difusão em filmes finos por gradiente de concentração (DGT) permite medir in situ os metais lábeis em águas naturais. Esta técnica apresenta uma importante vantagem … |
SEPARAÇÃO, IDENTIFICAÇÃO E QUANTIFICAÇÃO DE FRAÇÕES DE Cu, Zn, Fe e Mg EM CASTANHA DE CAJU POR HPLC-ICP OES Frutas, legumes, nozes e castanhas são importantes fontes de vitaminas, fibras, proteínas e sais minerais (tais como o zinco, cálcio, potássio, cobre e fósforo), essenciais para … |
 Especiação de Urânio in situ em Águas Tratadas Proveniente de Drenagem Ácida de Mina de Urânio Usando a Técnica (DGT)
A Drenagem Ácida de Mina (ADM) tem causado poluição por metais pesados em muitos países. Nos Estados Unidos 20000-50000 minas estão abandonadas poluindo … |
SIMCRO - 2014
Fases estacionárias monolíticas para separações no modo HILIC usando Cromatografia Líquida Capilar A Cromatografia Líquida Capilar (CLC) desponta como técnica de separação de grande potencial por apresentar diversas vantagens das separações em microescala … |
Determinação de gases de efeito estufa com sistema automático de injeção e forno auxiliar As variações de concentração dos gases de efeito estufa (GEE) na atmosfera são usualmente determinadas por cromatografia a gás e empregadas no cálculo das taxas de … |
 Automation of GPC, SPE and quechers separation of contaminants in food
Several techniques for the separation of targets from complex matrices are used today before the chromatographic analyses. Gel Permeation Chromatography (GPC), Solid Phase … |
 Air monitoring – The respective advantages and applications os canisters and tube
Volatile (vapor-phase) organic air toxics or ‘Hazardous Air Pollutants’ (HAPS) are monitored in many industrial and urban environments as a measure of air quality. They range in … |
 FAST, HIGH-EFFICIENCY SEPARATIONS ON A 4 MICROM ION EXCHANGE PHASE WITH A HIGH-PRESSURE IC SYSTEM
Running any column at increased flow rates may cause a decrease in peak resolution. However, the superior chromatographic fidelity achieved using the new 4 μm columns … |
 ADVANCES IN NEUROCHEMICAL PROFILING OF BRAIN TISSUE BY HPLC&NEW ELECTROCHEMICAL ARRAY DETECTOR
The ability to measure low levels of many different neurochemicals simultaneously is challenging due to detector sensitivity and the chromatographic challenge of resolving … |
 ANALYSIS OF PHOSPHOLIPIDS IN NATURAL SAMPLES BY NP-HPLC AND CORONA CHARGED AEROSOL DETECTION
Charged Aerosol Detector, a sensitive mass-based detector, is ideally suited for the direct measurement of phospholipids, as they are non-volatile and non-chromophoric … |
 GENERIC APPROACH FOR PHARMACEUTICAL DRUG DISCOVERY AND DEVELOPMENT USING RP HILIC WITH CAD
Liquid chromatographic (LC) methods for the assay of active pharmaceutical ingredients (API), drug candidates, intermediates, related substances, and impurities are crucial in … |
 INCREASING EXTRACTION EFFICIENCY OF PESTICIDES AND DIOXINS FROM WET SAMPLES BY A NOVEL POLYMER-ASE
Accelerated solvent extraction (ASE) is a high-temperature, high-pressure extraction technique that is widely used for sample extractions in the environmental, chemical and … |
 NEW METHOD DEVELOPED FOR QUANTITATIVE ANALYSIS OF LOW TESTOSTERONE CONCENTRATIONS IN PLASMA
Analysis of testosterone in female and juvenile plasma samples for research requires an analytically sensitive method with a limit of quantitation of at least 10 pg/mL … |
 USE OF TRIPLE QUADRUPOLE GC-MS/MS AS A CONFIRMATORY METHOD FOR PCDD/FS IN FOOD AND FEED SAMPLES
Polychlorinated dibenzo-p-dioxins (PCDDs) and polychlorinated dibenzofurans (PCDFs) constitute a group of highly toxic organic compounds formed unintentionally, mainly in … |
 MICRO FLOW LC AND ITS APPLICATION ON FOOD SAFETY ANALYSIS
Micro Flow LC (MFLC)/ESI Q-Orbitrap was explored its applicability for analysis of pesticides using 1/1000 dilution to minimize matrix effects and increase sensitivity … |
 ROOT CAUSE DETERMINATION OF MATRIX EFFECTS IN LC/HRMS ESI
The matrix effects in liquid chromatography-electrospray ionization-mass spectrometry (LC-ESI-MS) analysis affect the accuracy of results, are difficult to compensate for and present a … |
 AUTOMATED SPE FOR THE DETERMINATION OF CONTAMINANTS IN WATER ACCORDING TO REGULATORY REQUIREMENTS
Contamination of clean water sources causes impact on the agricultural industry and natural resources; ultimately affecting both humans and animals. With a constant concern … |
 NOVA TECNOLOGIA PARA ECONOMIZAR HÉLIO EMPREGADO NA CROMATOGRAFIA EM FASE GASOSA
A crise no fornecimento de gás hélio afeta negativamente as atividades nos laboratórios de análises químicas em todo o planeta. Embora o consumo de hélio no segmento de GC & GC-MS … |
 ANALYSIS OF COMPLEX PETROCHEMICALS BY GC×GC-TOFMS WITH VARIABLE-ENERGY ELECTRON IONISATION
Crude oil contains thousands of organic compounds ranging from light hydrocarbons to complex biomolecules. Speciation of hydrocarbons is of great interest to the petroleum … |
 HIGH-PERFORMANCE SCREENING OF POLLUTANTS IN WATER USING GC×GC–TOF MS
The last decade has seen increasing demands to protect and enhance water quality. The majority of analytes of concern are organic compounds, and to monitor all such analytes in … |
 NOVA TECNOLOGIA DE AUTOMAÇÃO SOLUCIONA AS LIMITAÇÕES DO ACOPLAMENTO SPE-SEPARAÇÃO CROMATOGRÁFICA
A Extração em Fase Sólida (SPE) é uma técnica de preparação de amostras muito empregada para o clean-up da amostra e concentração de analitos, porém, a SPE realizada … |
5º BrMass - 2014
Proteins as biomarkers of Shear stress (SS) intensity: role of blood flow in atherosclerosis developmentSukrut Somani wins Poster Award at Nanomedicine 2014 Changes in SS intensities are highly associated to development and progression of atherosclerotic plaques1. Some vascular regions … |
High-Resolution, Accurate-Mass Forensic Toxicology Screening in Blood Samples Using a Q Exactive Mass Spectrometer Forensic scientists and forensic toxicologists need to identify an unlimited number of compounds in complex matrixes with the capability of retrospective data analysis for quick … |
A New Lipid Software Workflow for Processing Orbitrap-based Global Lipidomics Data in Translational and Systems Biology Research Application of lipidomics to disease phenotype analysis is a growing area in research. Identification of unique biomarkers to distinguish healthy humans compared to individuals … |
Large Scale Targeted Protein Quantification Using HR/AM Selected Ion Monitoring with MS/MS Confirmation on a Novel Hybrid, Q-OT-qIT Mass Spectrometer Proteomics studies are turning from qualitative to quantitative to understand the biological function and interactions of proteins in biological systems. The extreme complexity and … |
A Platform to Identify Endogenous Metabolites Using a Novel High Performance Orbitrap MS and the mzCloud Library The structural identification of metabolites represents a significant challenge in metabolomics study. Multistage mass spectrometry (MSn) is a powerful tool for compound … |
Analysis of Multiclass Veterinary Drugs in Baby Food by Ultra Fast Chromatography with High Performance Triple Quadrupole Mass Spectrometry The quantification of different multi-class veterinary drug residues (albendazole, chlorotetracycline, danoflozacin, doxycycline, enrofloxacin, erythromycin, fenbendazole … |
Simplifying Complex Multi-Residue Pesticide Methodology in GC-MS/MS The task of setting up a triple quadrupole GC-MS pesticide analysis can be daunting, regardless the starting point. If a small set of pesticides should be expanded to a larger set … |