Category: Webinar

Characterisation of Non-Ionic Surfactants

In this talk, we will show characterization of ethoxylation in non – ionic surfactants. In the first dimension the separation is by degree of ethoxylation, while in the second dimension by the separation occurs by the length of the hydrophobic tail. This makes identification and quantitation possible in a single run. Using Agilent 2D LC MassHunter 11 software coupled with the G6230A Accurate Mass Time of flight instrument. We have both quantitative and qualitative data. We can show ppb levels of quantitative detection with Personal Compound Database Library (PCDL) matching in a Walkup environment that a plant QC technician can use.

 

Speaker

Sue D’Antonio
Applications Scientist
Agilent Technologies, Inc.

 

Sue D’Antonio joined Agilent (HP at that time) more than 30 years ago. For the last 15 years Sue has been an Applications Scientist in the Liquid Phase Separations Group. Sue’s application support extends to HPLC, UHPLC, CE and LCMS across a wide range of markets and customers.

 

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Per and Polyfluoroalkyl Substances in Soils

Graphitized carbon black (GCB) has been used widely in sample preparation for efficient removal of pigments and other matrix interferences. However, GCB may cause the loss of some analytes. Carbon S is an advanced hybrid carbon material with optimized carbon content and pore structure. Compared to GCB, Carbon S provides equivalent or better pigment removal from sample matrices, while significantly improving recovery for some GCB-selective analytes (such as planar pesticides). As a result, Carbon S sorbent provides a better balance between analyte recovery and matrix removal efficiency than traditional GCB sorbent. The Carbon S sorbent is applied in the same SPE cartridge format with the same bed mass as GCB SPE. The Carbon S SPE cartridges can be used as a replacement for the GCB cartridges for applications where SPE methodology is used. This study investigates the post-extraction matrix cleanup of 59 PFAS from loamy sand, reed sedge peat, and topsoil using the Bond Elut Carbon S 250 mg, 6 mL cartridges followed by LC/MS/MS analysis.

 

Speaker

Matt Giardina
Applications Chemist
Agilent Technologies, Inc.

 

Matthew Giardina is an applications chemist at Agilent Technologies focusing on the development of sample preparation techniques for challenging environmental applications. He has been with Agilent for 10 years and working in the field of analytical chemistry for over 20 years. He received and B.S. in chemistry from the University of Maryland at College Park and Ph.D. in analytical chemistry from the Ohio State University.

 

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Reliability of Multi-residue Identification

It is of utmost importance to ensure that the analytical results from residue testing for food products are reliable. “False positive” findings of hazardous residues in food result in safe product being rejected and leading to potential huge financial and juristic implications. “False negative” findings result in contaminated product being on the shelf and increase the risk of a foodborne disease. The reliability of testing results depends on the type of methodology and the performance criteria. Identification is the important step before a residue is reported. Procedures for identification should be rigorous and depend on sensitivity and selectivity of the MS techniques. The causes of “false positive” and “false negative” derived from both QqQ-MS and HR-MS detection will be discussed. The approaches of establishing a “fit-for-purpose” methodology and identification criteria for both QqQ-MS and HR-MS will be introduced. This will help the testing labs build the protocols/procedures to follow to reduce the incidence of “false detections”; help set up the criteria for identification; and help deliver the highly accurate results.

 

Speaker

Hui Zhao
Pre-Sales Application Engineer
Agilent Technologies, Inc.

 

Hui has 13 years of industry experience developing and validating analytical methods for food/feed nutrition, food safety, dietary supplements and botanicals testing, using a variety of analytical techniques including LC-TQ, LC-QTOF, LC-DAD and GC-MS and a breadth of sample preparation methodologies. She has worked as a Research Scientist at Monsanto, EPL-Bioanalytical Services, Tate & Lyle, Inc. and Lead Staff Scientist at Covance Food Solutions. She holds a Master of Science degree in Analytical Chemistry from Lanzhou University in China and a Ph.D. in Analytical Chemistry from the University of Missouri.

Prior to becoming a Pre-Sales AE, Hui worked as an LCMS application scientist in Agilent’s global market development group where her primary focus was food and environmental market development.

 

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Aqueous Film Forming Foam Formulations

Aqueous film forming foam (AFFF) is an effective fire suppressant for petroleum-based fires.  Foams are primarily composed of complex mixtures of per- and polyfluorinated substances (PFAS), but the exact composition is protected business information.  Identification of PFAS using High–resolution mass spectrometry (HR-MS) only utilizes the accurate mass and isotope pattern of the molecular ion and is not robust as formulas do not provide structural information.  Fragment ions from MSMS spectra can greatly improve identification confidence with software tools such as Fluoromatch. Data-dependent acquisition (DDA) is a common tool used to acquire MSMS spectra when the composition is unknown.  In this study, three approaches based on DDA acquisition for the MSMS fragmentation of fluorinated compounds were optimized and compared.

 

Speaker

Emily Parry, PhD
LC/MS Applications Scientist
Agilent Technologies, Inc.

 

Emily Parry received her PhD degree in Environmental Chemistry from the University of California, Davis. She joined Agilent after completing her postdoctoral work at the Environmental Protection Agency (EPA). Her specialty is method development and measurement of emerging contaminants.

 

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Dioxins Analysis in the Environment

U.S. EPA Method 1613B has been one of the primary methods used in the analysis of polychlorinated dibenzo-p-dioxins (PCDDs) and polychlorinated dibenzofurans (PCDFs) in wastewater, soils, sludges, and other matrices. These compounds have more than 200 congeners, and seventeen of them are highly toxic and of interest in trace analysis. Historically, these analyses have been performed using magnetic sector high-resolution GC/MS. In 2021, the U.S. EPA approved an alternate testing protocol (ATP) that accepts GC/TQ as an equivalent technology for the analysis of dioxins in environmental samples.  This work shows the Agilent triple quadrupole GC/MS system can achieve the sensitivity required to meet and exceed guidance for the analysis of PCDD/PCDFs at all concentration levels.

 

Speaker

Joel Ferrer
Product Manager – Agilent QQQ GC/MS
Agilent Technologies, Inc.

 

Joel Ferrer is the Product Manager for the Agilent Triple Quadrupole GC/MS portfolio. He obtained his B.S. in Biomedical Sciences at Texas A&M University where he gained experience on Agilent LC/MS and GC/MS instrumentation performing metabolomics research in the Department of Chemistry. Joel later earned his MBA from the University of Houston with a focus in Product Management and Marketing Analytics. He’s been with Agilent for over 5 years and in his current product management role since June 2020.

 

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High-Throughput Intact Native Protein Analysis

Ion mobility-mass spectrometry has become a valuable analytical tool in native protein analysis. In protein structure studies, ion mobility spectrometry provides rotationally averaged collision cross-section values that correlate to size and shape of the biomolecule. For proteins, ground state CCS and accurate mass are not adequate to identify different proteins. Therefore, the introduction of gas phase unfolding followed by ion mobility measurements provide unique fingerprints for native protein analysis. This collision-induced unfolding (CIU) technique can be utilized to identify proteins and protein complexes. Typical CIU experiments utilize static nano-ESI or standard ESI using a syringe pump for sample introduction which is difficult to automate. In this study, we have developed a new automated sample introduction method for high-throughput CIU experiments which can be adapted for IgG and other proteins.

 

Speaker

Sheher Banu Mohsin, Ph.D.
Senior Applications Scientist
Agilent Technologies, Inc.

 

Sheher Mohsin is a senior applications scientist at Agilent Technologies. She received her Ph. D in physical chemistry from the University of Illinois and an MBA from Rockhurst University. She started her career at the US Environmental Protection Agency working on dioxin analysis with high-resolution mass spectrometers. She later joined Bayer and worked in the special analysis lab using mass spectrometry to solve problems in synthesis, impurity determination and submission of final product impurity profile to regulatory agencies. Sheher’s current focus is on lipidomics using GC, LC and SFC separations and mass spectrometry. Sheher collaborates with academic and government researchers working on complex problems to come up with innovative, simplified workflows using the latest tools in separation and mass spectrometry.

 

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HydroInert for Use with Hydrogen Carrier Gas

Recent concerns with the price and availability of helium have led laboratories to look for alternative carrier gases for their GC/MS and GC/MS/MS systems. For GC/MS, hydrogen is the best alternative to helium. Among the problems encountered when converting to hydrogen carrier gas in GC/MS is that hydrogen is not an inert gas and may cause chemical reactions in the mass spectrometer electron ionization (EI) source. This can lead to disturbed ion ratios in the mass spectrum, spectral infidelity, and peak tailing. Therefore, a novel EI source for GC/MS and GC/MS/MS was developed and optimized for use with hydrogen carrier gas.

To evaluate the novel EI source performance, several classes of compounds including SVOCs, VOCs, PAHs, PCBs, phthalates, and pesticides were analyzed with GC/MS and GC/MS/MS using hydrogen as the carrier gas. The results demonstrated:

  • Good spectral fidelity for compounds susceptible to hydrogenation in the source resulting in higher library match scores observed against the NIST spectral library when compared to the conventional EI source. This effect was especially pronounced for nitrobenzene and other nitro-compounds
  • Excellent chromatographic peak shape, especially for late-eluting PAHs with a fast analysis method that is known to amplify any chromatographic peak tailing
  • Good performance for the analysis of over 200 pesticides with both GC/MS and GC/MS/MS
  • Dramatically improved calibration performance for SVOCs
  • Excellent spectral matching and calibration performance for VOCs analyzed with headspace in drinking water
  • Demonstrated excellent sensitivity at the sub-ppb level for many analytes including PAHs and PCBs, exceeding that typically seen with hydrogen carrier gas with both GC/MS and GC/MS/MS
  • Stable system performance for over 5,000 injections of a heavy soil extract.

The novel EI source addresses one of the operational issues impacting the environmental laboratory industry with using hydrogen as the carrier gas.

 

Speaker

Anastasia A. Andrianova
GC/MS Application Scientist
Agilent Technologies, Inc.

 

Anastasia Andrianova is a GC/MS Applications Scientist in the Mass Spectrometry Division of Agilent Technologies, located in Wilmington, Delaware. She received a Ph.D. in analytical chemistry from the University of North Dakota (Grand Forks) in 2017 and a combined masters’ and bachelor’s degree in analytical chemistry from the Moscow State University (Moscow, Russia) in 2014. Anastasia has been at Agilent Technologies since 2018. She has authored or co-authored over 30 journal articles and application notes, as well as 1 patent in the field of analytical chemistry, focusing on chromatography and mass spectrometry. Anastasia is currently working in GC/MS applications in multiple areas with a focus on food and environmental analysis.

 

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Optimised Analysis of SVOCs with EPA 8270E

This webinar will overview a sensitive method used to analyse semivolatile organic compounds (SVOCs) on an Agilent 7000E Gas Chromatograph/Triple Quadrupole (GC/TQ) Mass Spectrometer. The utilization of GC/TQ instrumentation for analysis of SVOCs offers significant advantages:

  • Excellent selectivity afforded by Multiple Reaction Monitoring (MRM) mode results in faster batch review and increased confidence due to the elimination of matrix interferences often present when using GC/MS acquisition modes; and
  • Better sensitivity enables smaller extraction volumes which improves sustainability, reduces waste, and decreases costs associated with sample preparation, solvent usage, and waste disposal.
  • Key analytical techniques which facilitated this work will be discussed.
  • Manufacturer’s recommended tune protocol for mass accuracy and resolution checks in accordance with US EPA Method 8270E will also be discussed.

 

Speaker

Rachael Ciotti
GC/MS Application Specialist
Agilent Technologies, Inc.

 

Rachael Ciotti is a GCMS Application Specialist at Agilent Technologies in Wilmington, DE. Previously, she was a Field Service Engineer specializing in installing, maintaining, and repairing Agilent GC and GC/MS systems. Prior to joining Agilent, Rachael worked at DuPont as an analytical chemist responsible for GC and GC/MS method development and transfer to manufacturing labs. She holds a Bachelor of Arts in Mathematics from Rutgers University.

 

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Knowing How to Make ICP-MS Easier

Knowing the right information at the right time can help you cut through the everyday complexities of your ICP-MS analysis.

Driven by insights from customers from around the world, Agilent has developed a range of Easy-fit supplies, intuitive yet powerful software and complete workflows to bring the confidence of knowing you will get the answers you need to efficiently run your lab.

Watch the presentation and learn how to make your ICP-MS applications easier to run, maintain and control.

 

What you will learn

  • Learn how our range of Easy-fit supplies can simplify your workflow
  • Discover our selection tools that can help you get your ICP-MS configured right for your analysis
  • Take a look at ICP-MS MassHunter software
  • Learn about some of the simple software tools and time-saving tips that can help you get the very best out of your ICP-MS.

 

Speakers

Gareth Pearson
ICP-MS Supplies Product Manager (Agilent, Spectroscopy Technology Innovation Centre, Melbourne, Australia)

Angie is a proteomics scientist on the application team at Evosep BioSciences. Her work focuses on bringing standardization, throughput, and depth into translation proteomic research studies. During her PhD at University College Dublin studying proteomics in inflammatory arthritis and postdoc at Cedars Sinai, Los Angeles, Angie conducted large scale biomarker studies, where she gained considerable experience with the Evosep One and the Agilent triple quadrupole mass spectrometers.

 

Gareth Pearson
ICP-MS Supplies Product Manager (Agilent, Spectroscopy Technology Innovation Centre, Melbourne, Australia)

Angie is a proteomics scientist on the application team at Evosep BioSciences. Her work focuses on bringing standardization, throughput, and depth into translation proteomic research studies. During her PhD at University College Dublin studying proteomics in inflammatory arthritis and postdoc at Cedars Sinai, Los Angeles, Angie conducted large scale biomarker studies, where she gained considerable experience with the Evosep One and the Agilent triple quadrupole mass spectrometers.

 

Gareth Pearson
ICP-MS Supplies Product Manager (Agilent, Spectroscopy Technology Innovation Centre, Melbourne, Australia)

Angie is a proteomics scientist on the application team at Evosep BioSciences. Her work focuses on bringing standardization, throughput, and depth into translation proteomic research studies. During her PhD at University College Dublin studying proteomics in inflammatory arthritis and postdoc at Cedars Sinai, Los Angeles, Angie conducted large scale biomarker studies, where she gained considerable experience with the Evosep One and the Agilent triple quadrupole mass spectrometers.

 

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1,4-Dioxane in Consumer Products

1,4-Dioxane is an industrial chemical contaminant that is of concern even at trace levels in consumer products. Government jurisdictions are beginning to regulate the amount of 1,4-dioxane allowed in consumer products globally. It has already been banned and deemed unsafe in cosmetics in Canada, and it is a regulated substance in Europe. The allowable concentrations in the United States are expected to vary from state to state, typically at part per billion to low part per million levels. There have been several methods developed to test for 1,4-dioxane, but none of these methods are adequate to detect 1,4-dioxane in consumer products with complex mixtures and solutions.  A method for the high-sensitivity detection of 1-4-Dioxane was developed on the Agilent 8890B/7000 GC/QQQ triple quadrupole in Electron Ionization (EI) mode.  The extraction was performed using an Agilent PAL3 autosampler with solid phase microextraction (SPME) tool. The GC was configured with a 30 m DB-8270D column and a 1 m deactivated fused silica column using a purged ultimate union. The advantage of using a tandem quadrupole mass spectrometer is that a selective precursor to product ion transition is generated, minimizing interferences. Analysis time was less than 15 minutes. Calibration curves using 9 levels from 0.1 ng/g (ppb) to 400.0 ng/g (ppb) in multiple reaction monitoring (MRM) Electron Ionization with an R2 value of 0.999.  Low detection limits, necessary for these pernicious compounds, were also achieved.

 

 What you will learn

•    The application of the Evosep One chromatography system to high-throughput analysis of large cohorts.
•    How there is a growing demand for high throughput and standardized workflows to allow  the  analysis of increasingly large cohorts of samples for proteomic research
•    How high sensitivity is achieved for the accurate measurement of low abundant biomarkers
•    How the Evotip was designed to improve efficiency and recovery associated with sample purification and loading ahead of MS analysis.

 

Speaker

Ron Honnold
Application Scientist
Agilent Technologies, Inc.

Ron Honnold, Ph.D. is an Applications Scientist in the Life Sciences and Applied Markets Group (LSAG) at Agilent Technologies; Santa Clara, CA. Ron is an experienced analytical chemist and mass spectrometrist with more than 30 years of experience using state-of-the-art analytical systems. Currently he is responsible for applications and methods development related to GC-MS products, particularly for single quadrupole (GC/MS), triple quadrupole (GC-MS/MS), and quadrupole time of flight (GC-QTOF). Ron is also a member of the Agilent Cannabis Task Group focusing on pesticides, terpenes, and residual solvents.

 

Simon Jones
GC Applications Engineer/Scientist
Agilent Technologies, Inc.

Simon Jones has over 23 years of GC experience. For the last 15 years, he has been with Agilent as a GC applications engineer/scientist based out of the GC column manufacturing facility in Folsom California. In his roles he has assisted with application development, troubleshooting chromatographic issues, and assisting with instrument configurations. Prior to joining Agilent in 2005, he worked in an analytical lab for the power industry, developing and optimizing testing methodologies for insulating fluids and materials in transformers.

 

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