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A blog on the latest applications, articles, & research on chromatography solutions in sample preparation, Ion Chromatography (IC),
High Pressure Liquid Chromatography (HPLC), Ion Chromatography-Mass Spectrometry (IC-MS), Gas Chromatography (GC),
Gas Chromatography-Mass Spectrometry (GC-MS and GC-MS/MS), and software (Chromeleon CDS, LIMS, and ProteinCenter).

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Food Testing Using High Resolution LC-MS/MS: A Case Study at RIKILT

  
  
  
  
  
  
lc-ms ms pesticides analysis

Just watched a great 5 minute video which gave an overview on how high performance liquid chromatography (HPLC) coupled to High Resolution Accurate Mass (HRAM) mass spectrometry can help customers challenged with monitoring analytes such as pesticides and veterinary drugs in food and feed samples.

Pesticides Analysis with High-Resolution Accurate Mass Spectrometry

  
  
  
  
  
  
high resolution mass spectrometry, HRAM, high resolution accurate mass, pesticide, veterinary drug, orbitrap, LC-MS, LC-MS/MS

Liquid chromatography with triple quadrupole mass spectrometry (LC-MS/MS) is considered the gold standard for screening and quantitation of pesticides in various food matrices. However, high-resolution accurate mass (HRAM) LC-MS/MS is growing in popularity, in part because it allows for retrospective analysis on additional analytes of interest and screening for unknown or unexpected pesticides is possible. This is because all ions can be collected and fragmented whereas triple quadrupole mass spectrometry requires a target list of compounds. Furthermore, method development time is often shorter by orders of magnitude with HRAM LC-MS/MS, enabling the screening of a large number of compounds compared to triple quadrupole mass spectrometers.

GC-MS Analysis of Pesticides: Downloadable e-Book!

  
  
  
  
  
  
analysis of pesticide residues GC–MS

I am so pleased to offer you this new 52-page interactive e-book, developed by LCGC, on the advances in the analysis of pesticide residues using gas chromatography–mass spectrometry (GC–MS) methods.

GC-MS & LC-MS Methods for Analysis of Pesticide Poisoning in Wildlife

  
  
  
  
  
  
gc-ms analysis of wildlife poisoning

Did you know that poisons, and pesticides in particular, have been used to kill wildlife all over the world and now 83% of African countries have banned the killing of wildlife with poisons? (Link to study.) I learned that wildlife is poisoned as some animals are considered a nuisance for humans while other animals, birds, and fish are poisoned as they are used as sources of food, traditional medicines, or products. In the study linked to in the first sentence, Dr. Ogada of The Peregrine Fund (National Museums fo Kenya, Kenya), calls for "banning pesticides, improving pesticide regulations and controlling distribution, better enforcement and stiffer penalties for offenders, increasing international support and awareness, and developing regional pesticide centers."

Automated SPE Speeds GC Analysis of Pesticides in Beverages

  
  
  
  
  
  
GC Analysis of Pesticides in fruit drinks

The poster featured in this blog post has a somewhat funny title which caught my eye when I was reviewing the list of the latest and most popular gas chromatography applications from one of our marketing specialists. The other reason I am writing about this application is because it does seem concerning that a study from Spain (referenced in the poster) found that pesticides in fruit-based soft drinks are 300 times higher than those in tap water (link to study).

GC Trace Analysis of Pesticides in Food Oils

  
  
  
  
  
  
trace analysis of pesticides in food oils

I am pleased to feature two recently released methods for the gas chromatography analysis of pesticides in food oils, such as olive oil and a common food oil.

GC-MS/MS Speeds Analysis of 200 Pesticides in Ayurvedic Churna

  
  
  
  
  
  
analysis of ayurvedic medicines

In the fascinating application presented in this blog post, chemists from our Mumbai (India) and Singapore labs collaborated on the development of a fast and precise GC-MS/MS method for the routine determination of multi-residue pesticides in Indian Ayurvedic medicine churna, a blend of ground spices and herbs.

Gas Chromatography Does Wine Analysis!

  
  
  
  
  
  
pesticides in wine

When I received a link to this newstory, titled, From chardonnay to cabernet, malbec to merlot: What's in your wine? (link to article) featuring the analysis of pesticides and other contaminants in wine from one of our marketing communications specialists, my first question was: which of our instruments does the testing company use? Of course, we were pretty thrilled that one of our gas chromatography systems was used in the analysis.

Solid-Phase Extraction Cartridges with Polymeric Phases Now Available

  
  
  
  
  
  
chromatography sample preparation

Here, I am pleased to present a recently released line of polymer-based solid-phase extraction cartridges (Thermo Scientific Dionex SolEx Polymer-Based SPE cartridges) for the extraction of organic contaminants from liquid matrices. These cartridges are intended to be used for sample preparation using our solid-phase extraction (SPE) system (Thermo Scientific Dionex AutoTrace 280 SPE system) followed by GC, GC-MS or LC-MS analysis.

Gas Chromatography On-Demand Webinars for Pesticide Analysis

  
  
  
  
  
  
gc-ms pesticide residue analysis

Pesticides have been in my news radar lately with a couple of recent stories that caught my attention: in the first one, Canada has initiated special reviews on 23 pesticide active ingredients (link to story) and, in the second one, the U.S. EPA has awarded three universities USD500,000 for studies on reducing pesticide including risk to bees (link to story). And, yesterday, I received an email on three on-demand webinars on the use of gas chromatography in pesticide analysis that you can view without registering!

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