For as long as PFAS persist in the environment, there is no doubt they will persist in our conversations as environmental scientists. Globally, PFAS contamination has been detected in water supplies, soil and even in the blood of people and wildlife. Different countries are at various stages of addressing PFAS contamination and many governments have set regulatory limits and are working on assessing the extent of contamination, cleaning up affected sites and researching safer alternatives.
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PFAS testing: 2024 in review and what to expect for 2025
For as long as PFAS persist in the environment, there is no doubt they will persist in our conversations as environmental scientists. Globally, PFAS contamination has been detected in water supplies, soil and even in the blood of people and wildlife. Different countries are at various stages of addressing PFAS contamination and many governments have set regulatory limits and are working on assessing the extent of contamination, cleaning up affected sites and researching safer alternatives.
Inside the box: Acoustic ejection mass spectrometry for drug discovery
On average, it takes 10-15 years and 1-2 billion dollars to approve a new pharmaceutical for clinical use. Since approximately 90% of new drug candidates fail in clinical development, the ability to make early, informed and accurate decisions on the safety and efficacy of new hits and leads is key to increasing the chances of success.
Unveiling the power of ZT Scan DIA: Insights from Ludwig Sinn’s presentation at World HUPO Congress 2024
In a recent presentation at the World HUPO Congress 2024, Ludwig Sinn from the Ralser lab shared exciting advancements in proteomics research, focusing on the innovative ZT Scan DIA acquisition modes developed in collaboration with SCIEX. Let us explore the key highlights and benefits of this innovative technology.
Exploring the power of ZT Scan DIA
In a recent presentation, Tim Heymann from Mann Lab at the Max Planck Institute of Biochemistry shared his first impressions of ZT Scan DIA, the novel data-independent acquisition strategy from SCIEX, highlighting its innovative approach and significant benefits for proteomics research. Let’s dive into the key points from his insightful talk.
Inside the box: Complementary fragmentation with LC-MS for Metabolite Identification
Liquid chromatography-mass spectrometry is commonly used for Met ID but confident soft spot identification is not always possible. Imagine the advantage of unambiguous metabolite identification using liquid chromatography-mass spectrometry (LC-MS) reducing the need for additional safety testing during drug discovery. Quickly and easily generate the information you need using routine assays that are robust and efficient, enabling confident decision-making while also saving time and money.
Tips and tricks from our application experts: AAV analysis with CE
Peter Holper, Staff Applications Scientist at SCIEX, US, shares his tips and tricks on AAV analysis using CE with the BioPhase 8800 system and the PA 800 Plus system.
Overcoming uncertainty in your PFAS analysis
Just like gum on the bottom of a shoe, the existence of per- and poly-fluorinated alkyl substances (PFAS) in our environment is a sticky one. If you’re in the field of environmental testing, then you’re all too familiar with the threat these substances have on public health. While we have learned a lot about them over the years, there is still much more to understand. With the right detection methods, we can gather the information we need to empower us to make informed decisions on reducing the risks they impose.
High mass tuning calibration for ZenoTOF 7600
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Metabolite identification and peace of mind
Managing metabolite identification (Met ID) studies is challenging, so what is at the top of your priority list as you plan the year ahead? Ensuring you have the data needed to manage product safety, meeting deadlines, staff recruitment and training, maintaining compliance, capital expenses, or something else?
Optimized rolling collision energy curves for IDA and SWATH DIA for peptides
During data dependent acquisition (DDA or IDA) or SWATH acquisition, the collision energy can be automatically adjusted according to the mass/charge and charge of the peptide. This dependency has been well characterized on our QTOF systems. By selecting rolling...
Current proteomics software compatibility for ZenoTOF 7600 system
Below is a summary of various other software packages that are useful for processing proteomics data from the ZenoTOF 7600 system. Note this list is not comprehensive and only covers the tools we have lightly tested to date. Acquisition Type Software Files needed...
Processing ZenoTOF 7600 system data with DIA-NN software
DIA-NN software is a powerful software tool for processing data independent acquisition (DIA) proteomics datasets. It uses neural networks and other algorithms to identify and quantify peptides and proteins from DIA data and is specifically optimized for fast...
Excel macro for calculating averages or percent CVs from replicates in a 384 -well plate
This excel workbook is designed to be used with data copied from a SCIEX OS software Analytics module results file
Back to the new basics: Part 1 | Making the leap from GC-MS to LC-MS
Producing accurate results quickly in a demanding environment is no easy feat for analytical scientists. What’s more, many of us are constantly questioning ourselves—I certainly am—about whether we are employing the best technique for the analysis at hand.
It’s an overwhelming thought, considering the wide range of tools that are available to choose from, each of which offers varying levels of capacity, sensitivity, selectivity, specificity and cost. How do you meet the unique needs of your organization without breaking the bank? I get it, and I’m not here to convince you it’s easy. My aim is to guide you through the process to help you make the right decision for you.
How do I check the quality of the Auto Retention Time Calibration used in my Extractor processing?
When using the Auto-Calibration option in Extractor, a set of retention time calibration peptides will be determined automatically from the library and used for RT calibration. To determine how the fit looks for the calibration on each datafile, follow these steps....
Uploading data for use in OneOmics suite
There are two options for data storage when working with the OneOmics suite. You can store your data either within the SCIEX Cloud platform in the Data Store, or you can store data in BaseSpace (Illumina) and link your BaseSpace account with the SCIEX Cloud platform....
sMRM Pro Builder template tutorial
The sMRM Pro Builder template is an Excel-based tool that can help you implement large panels of analytes in your lab. The Excel sheet will take your preliminary experimental results and compute retention times, retention time window widths and dwell time weighting to optimize your targeted assay.
Short-chain PFAS compounds are on the rise- Craig’s PFAS Vodcast Cora Young
Read time: 2 minutes Short-chain per- and polyfluoroalkyl substances (PFAS) are increasing in the Canadian Arctic environment, with the most rapid increases occurring post-2000, according to a recent study in Geophysical Research Letters (April 2020). For example,...
Thailand cannabis legalization
Thailand has become the first southeast Asian country to legalize cannabis for medical use. Cannabis was originally introduced into Thailand from India, and until it was outlawed in the 1930s, it was historically used as a kitchen condiment, medicine and source of fiber.
Reducing PFAS interferences during human plasma and serum analysis with accurate mass spectrometry
High level method optimization considerations for Echo MS system
While an in-depth discussion of method development and optimization for the Echo® MS system is beyond the scope of a community post, here are some points to consider as part of the process: The maximum recommended ion spray voltage for prolonged electrode life is 5000...
High complexity of the lipidome
The complexity of the lipidome is diverse in the structure and there are many combinatorial isoforms that are available within nature. Currently, many different techniques are required to fully characterize a lipid molecule. What if you could do it in a single...
Standard front-end cleaning for TripleTOF systems
General points: Use of laboratory deionized (DI) water is specified at points in the procedure. However, if there are any concerns regarding quality, please utilize a reputable supplier of pure deionized water (>18.2M ohm). 5-10 liters will typically be required...
Stay informed on the latest novel psychoactive substances (NPS) flooding the US drug market
Each year, the Drug Enforcement Administration (DEA) Special Testing and Research Laboratory publishes an Emerging Threat Report. The data contained in the report is updated quarterly and represents a snapshot of the drug evidence seized and analyzed by the DEA in the...
Understanding MS1 Peak Intensity in ProteinPilot software
The “Intensity (Peptide)” values come from LCMSReconstruct, in ProteinPilot software 5.0. It maps the RT, m/z, intensity MS1 surface to find the peak information for the peptide. The Intensity (Peptide) is a weighted sum of the heights of the isotope series at the...
What is the difference between a rapid and a thorough search in ProteinPilot software?
When setting up your search in ProteinPilot software, you select either a Rapid Search or a Thorough Search in the Search Effort section. This setting determines which parts of the algorithm will be invoked and effectively how deep into your sample you will search to...
Controlling the M5 MicroLC system with SCIEX OS software using contact closure
Contact closure can be used to control external devices that are not directly controlled by SCIEX OS software. A sample batch is first created in the SCIEX OS software for MS acquisition, and then a similar batch is created on an external LC device with the required...
What are my normalization options in MarkerView software and when should I use them?
In an LC-MS experiment there are multiple sources of variance that can confound the quality of your results. This variation can be biological e.g. differences between treated and control groups, but can also be non-biological, usually from small variations in...
Top questions about the exposome of PFAS revealed
According to the CDC, the exposome is “the measure of all the exposures of an individual in a lifetime and how those exposures relate to health.”
What’s in your citrus oil?
Craig Butt explains a non-targeted omics approach to characterizing and profiling compounds in citrus oil Read time: 4 minutes There is increasing interest among consumers in the benefits of natural products containing citrus beyond the traditionally known benefits of...