Archive for 2010

Split Injections Increase your Throughput for Semivolatiles Analysis by EPA Method 8270

It seems strange to think that using a split injection verses a splitless injection has anything to do with analysis time, but it does! When you are using a split injection the initial oven temperature can be much higher compared to a splitless injection.  Since the transfer of analytes onto the head of the column is much faster […]

Environmental Forensics — Using Selective GC Columns to Determine Sources and Fate for Chlorinated Dioxins and Furans in the Environment

In a recent book, Hester and Harrison describe Environmental Forensics as “a combination of analytical and environmental chemistry, which is useful in the court room context. It therefore involves field analytical studies and both data interpretation and modeling connected with the attribution of pollution events to their causes.”  A session at Dioxin in San Antonio […]

Indoor Exposure to PBDEs and PFCs: You’re Not Just What You Eat

That was the clever title of Tom Webster’s plenary speech at Dioxin in San Antonio yesterday that mentioned house dust as a potential major route of exposure, especially for dust-bunny chasing children, for PBDEs (polybrominated diphenyl ethers used as flame retardants) and PFCs (perfluorinated compounds; e.g. used as stain repellants in carpets, think Scotchguard). Tom […]

Restek at the 30th International Symposium on Halogenated Persistent Organic Pollutants (POPs) in San Antonio, Texas

Wow, impressive sounding name for a conference, eh?!  But you can just call it “Dioxin” like I and everyone else do.  Michelle Misselwitz and I are here in San Antonio this week representing Restek with our work on a new GC column for analyzing chlorinated dioxins and furans (it separates 15 of 17 toxic 2378 […]

FPRW Poster on Oil-Contaminated Seafood Now Available

Hi Everyone: I’ve had several requests for my 2010 Florida Pesticide Residue Workshop poster, The QuEChERS Approach with GC-TOFMS and GCxGC-TOFMS for PAHs in Oil Contaminated Seafood, so I am going to post it here:  FPRW P-39 PAHs Seafood Cochran In summary, it represents preliminary attempts to adapt the QuEChERS extraction and cleanup approach to relatively […]

Love Canal: Summer Vacation.

On a recent trip through Niagara Falls, New York, I forced the family to stop off and visit the remnants of what is now known as Love Canal – sidewalks disappear into brush and an occasional home can be seen through the overgrown vegetation. Our 5-year-old twins were full of questions.  “Why are we driving […]

Love Canal: Horrors & Heroes.

In 1977, Niagara Gazette reporter Michael Brown wrote articles detailing the 20,000 tons of toxic waste buried under the 99th Street Elementary School. Lois Gibbs, a 101st Street resident of Love Canal, took these articles to her brother-in-law, a biology professor. He confirmed her worse fears that these chemicals can affect the central nervous system. […]

GCxGC-TOFMS of Riser Pipe Oil from BP Gulf Oil Spill

I recently analyzed an oil sample collected by an ROV from the riser pipe at the BP Gulf oil spill site using GCxGC-TOFMS, a powerful multidimensional technique capable of characterizing complex samples that defy one-dimensional GC-MS. The GCxGC column setup was a 30m x 0.25mm x 0.25µm Rxi-17Sil MS in the first dimension with a […]

Jonathan Keim becomes Jonathan Chime at the Florida Pesticide Residue Workshop

Restek Sample Preparation Product Manager, Jonathan Keim, was assigned one of the most important jobs at the 47th Florida Pesticide Residue Workshop, that of xylophone artiste’ to alert conferees who are visiting exhibitors and posters at coffee break to return to the starting Technical Session.  He got the hang of it quickly and his “Smoke […]

International Morning Yesterday at FPRW

The Florida Pesticide Residue Workshop went international yesterday morning as seen from the program below.  For those of you who are working hard on pesticide and vet drug residue analysis, these presentations gave some good context on why we are doing these analyses.  They make a difference for governments and chemical companies and farmers and consumers.  Given […]