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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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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.

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.

Gas Chromatography Method Development for PCBs in Insulating Oil

mineral oil analysis using gas chromatography

This blog post covers a really interesting gas chromatography (GC) method development that came about as a result of a customer request from Brazil. As a signatory of the Kyoto Protocol, Brazil needs to initially reduce the amount of polychlorinated Biphenyls (PCBs) (U.S. EPA page) in the mineral insulating oils used in electrical transformers and capacitors, and then completely eliminate the use of PCBs in the insulating oils in 30 years! As a result, not only is the determination of PCBs in transformer oil now mandatory in Brazil, but the total PCB concentration now must be below 50 ppm for the oil to be transported or sold.

Accelerated Solvent Extraction: Two Notebooks for Environmental Apps

environmental sample preparation

I am pleased to share two application notebooks with our blog readers on using the technique of Accelerated Solvent Extraction (ASE) for environmental applications. Did you know that the ASE technique has been proven to produce results equivalent to or better than traditional extraction methods? Indeed, ASE has been accepted for use in the following U.S. EPA methods:

Accelerated Solvent Extraction: POPs Toxicology Application

liquid chromatography analysis of hexabromocyclododecane (HBCD) avian exposure

Three things came together for this blog post: first, late last month, I tweeted the troubling news that the 14-year long polystyrene foam ban in China would be lifted in May of this year, then I read people in China were concerned about the pollution from polystyrene as the ban was lifted, and finally, I received this research study on chicken embryos exposed to hexabromocyclododecane (HBCD) which is is a brominated flame retardant (link to Wikipedia page) used in polystyrene foam!

GC-MS & Accelerated Solvent Extraction: Analyzing PDBEs in House Dust

analysis of PBDEs

Did you know the main ways that humans ingest toxic polybrominated diphenyl ethers (PBDEs) (link to Wikipedia page) is through food and by inhaling indoor air and house dust? Last year, the NIEHS released a study on PBDEs that found "toddlers have a significant amount of exposure to PBDEs through house dust." (Link to story on NIH site.)

Accelerated Solvent Extraction: Neurotoxicology Study of Zebra Finches

pbde extraction for analysis

After blogging about the use of accelerated solvent extractiion in applications as diverse as dioxin exposure in a steel plant, medicinal herb analysis, tobacco analysis, and fat analysis in milk, I found this fascinating neurotoxocology study using our ASE system.

Ion Chromatography Identifies Halogens in Household Products

halogen analysis by ion chromatography

When this ion chromatography application on determining fluorine, chlorine, and bromine in common household products, such as plastic toys, gelatin capsules, magnetic tape, tableware, floor tiles, and garden hoses among other items, crossed my desk, I thought of this recent piece of news which said that a California watchdog group was "suing major manufacturers and retailers, including Target and, for selling nap mats made with a toxic flame retardant that is also a known carcinogen." (Link to news story.)

ASE & GC-MS/MS Workflow Streamlined for POPs Analysis: Webinar

pops analysis

As a result of the growing concerns over the health risks from constant exposure to persistent organic pollutants (POPs), the Stockholm Convention, a global treaty aimed at protecting human health from POPs, has banned the production of persistent toxic industrial chemicals, such as polybrominated diphenyl ethers (PBDEs). The banning of these chemicals has led to the need for not just analytical methods that can quantify the accumulation of PBDEs at low levels in ambient dust but also streamline the workflows as the extraction of these chemicals from solid and semisolid matrices can be a very laborious and time-consuming task. 

GC-MS and Other Technologies at the POPs Symposium 2012

GC, GC-MS, POPs, POPs Symposium, POPs Center of Excellence, Thermo Scientific

There are a lot of people that like to think they are the smartest people in any room.  I chose to study science because I like to be pushed to be better.  Being in a room full of people that are experts in their field is an opportunity to take advantage of.  This is one of the reasons for the  International Symposium on Recent Advances in POPs Analysis.  Another reason is POPs contamination in the environment, food, and living things can be dangerous.  The presenters show the use of GC-MS and other technologies for extraction and analysis of POPs.  Many of the presentations provide the background and reason for the testing, the context just makes it even more interesting.  The POPs Symposium was held in April.  You may be asking why I am only just now posting about this.  Well, mostly because it has taken a little while to get recorded presentations available so you could watch them.  You will need to read the entire blog post to be able to get the link, we are tracking you… I’m just teasing; the link to the recorded presentations is at the end.

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