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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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Effect of Sample Dilution on Matrix Effects in Pesticides Analysis

  
  
  
  
  
  
pesticides analysis in food

I recently read a publication that appeared in the Journal of Agricultural and Food Chemistry (Yang et al, published ahead of print on January 25, 2015), titled, Effect of Sample Dilution on Matrix Effects in Pesticide Analysis of Several Matrices by Liquid-Chromatography−High-Resolution Mass Spectrometry, (link to article abstract). This in-depth evaluation of the effect of sample dilution on matrix effects in pesticide residue analysis is an excellent read and was coauthored by Paul Yang from Ontario Ministry of the Environment and Climate Change, Jon W. Wong, Kai Zhang, and Alexander J. Krynitsky at the U.S. Food and Drug Administration, Jian Wang at the Canadian Food Inspection Agency, and  our very own James S. Chang and Maciej Bromirski.

Breeding Program & Pesticides Use Propel Strawberries to Celebrityhood

  
  
  
  
  
  
pesticides strawberries

Strawberries are well on their way to becoming California’s newest celebrity as indicated by the two strawberries-related stories that have been much in the news in California this year. First, there have been serious disagreements between a university and the scientist running the university’s strawberry breeding program to the extent of the media labeling it as a feud (see links to stories below). The second debate formed around the use of certain pesticides in California. This led to California’s Department of Pesticide Regulation establishing the the nation’s strictest limits on chloropicrin, a pesticide commonly injected into soil before strawberries are planted. (Links to the California Department of Pesticide Regulation page and their chloropicrin page.) Both stories are causing much interest and concern in the strawberry-growing community.

Why Attend an International Symposium on Pesticide Analysis?

  
  
  
  
  
  
pesticides analysis conference in prague

After reading the title of this post, perhaps you are wondering to yourself: Why organize yet another meeting on analysis of pesticides? Firstly, this two-day symposium, titled, 1st International Symposium on Recent Developments in Pesticides Residues Analysis, (link to symposium registration page), is intended to complement other well-established workshops, such as, EPRW and LAPRW. We are organizing the symposium to provide a platform for our customers to discuss robust, fit-for-purpose routine applications and the use of emerging technologies for the development of new and future workflows. In particular, we will present the further advancements, such as increased speed, higher resolving power, and improved analysis quality, of our Orbitrap technology for both targeted and screening pesticide analysis plus we will also be covering topics, such as sample preparation, GC-MS/MS, LC-MS/MS and IC-MS/MS and the latest in software advances to help with data interpretation and reporting.

A Milestone in Pesticides Analysis for Orbital Trap Mass Spectrometry

  
  
  
  
  
  

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.

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