Monday, April 14, 2014

Mass-Labelled Telomer Sulfonates New Product from Greyhound Chromatography

Mass-Labelled Telomer Sulfonates New Product from Greyhound Chromatography

                                                                                            

Polyfluorinated sulfonates (commonly referred to as telomer sulfonates) have been incorporated into aqueous film-forming (AFFFs) which are used to extinguish hydrocarbon-fuelled fires.  The effectiveness of the developed formulations for fighting Class B flammable liquid fires resulted in their widespread use and subsequent release into the environment.

Analytical laboratories developing methods for monitoring the levels of these compounds in environmental samples have reported matrix effects leading to ionization enhancement during LCMS analysis of water samples.  For this reason, Wellington Laboratories have prepared mass-labelled (13C2) reference standard solutions of 4:2FTS (M2-4:2FTS) and 8:2FTS (M2-8:2FTS) to complement their existing telomere sulfonate standards and aid researchers in the generation of accurate data.

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Wellington Laboratories full product range are available from Greyhound Chromatography and Allied Chemicals, 6 Kelvin Park, Birkenhead, Merseyside, CH41 1LT  Tel:  +44 (0) 151 649 4000  Fax:  +44 (0) 151 649 4001

Contact sales@greyhoundchrom.com

 Download the latest catalogue here.

Wednesday, April 09, 2014

Cl-PFOPA Perfluoroalkylphosphonic acids (PFAPAs) Available from Greyhound Chromatography

Cl-PFOPA Perfluoroalkylphosphonic acids (PFAPAs) Available from Greyhound Chromatography

Perfluoroalkylphosphonic acids (PFAPAs) have been used as antifoaming agents in pesticide formulations and are also active ingrediants in certain windshield washer fluids.  These compounds differ from other perfluoroalkyl acids in that they contain two acidic hydrogens with different pKa values.  This property may produce unusual or unexpected behaviour during sample extraction, clean-up, and industrial analysis.

In order to assist scientists in the accurate quantification of PFAPAs in environment samples, Wellington Laboratories have added a monochloroperfluorooctylphosphonic acid surrogate (Cl-PFOPA) to their inventory of certified PFAPA reference standards.

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Wellington Laboratories full catalogue of products is available throughout Europe and the Middle East from Greyhound Chromatography and Allied Chemicals, 6, Kelvin Park, Birkenhead, Merseyside, CH41 1LT.  Tel:  +44 (0) 151 649 4000   +44 (0) 151 649 4001

   VIEW OR DOWNLOAD THE FULL CATALOGUE HERE.

Wednesday, April 09, 2014

SAmPAP : Mono- and Di-Ester New Wellington Laboratories Product from Greyhound Chromatography

SAmPAP : Mono- and Di-Ester New Wellington Laboratories Product from Greyhound Chromatography

From 1974 until 2002, phosphate surfactants known as SAmPAPs, based on 2-(N-ethylperfluoro-1-octanesulfonamido)-ethanol (N-EtFOSE), were produced in North America and incorporated into paper food packaging.  Although SAmPAPs were a high production-volume chemical for almost 30 years, these compounds have only recently been detected in environmental samples as mono- and di-esters (SAmPAP and diSAmPAP respectively).  Not only do the SAmPAP esters appear to be persistent in the environment, but they are also potential perfluorooctane sulfonate (PFOS) precursors.  Unfortunately very little data is currently available in the scientific literaturwe on the lifetime and transformation pathways of these compounds.

In order to aid researchers in the analysis and quantification of these compounds, Wellington Laboratories has synthesized two native SAmPAP esters, SAmPAP and diSAmPAP, to complement our inventory of existing poly- and per-fluorinated reference standards.

DOWNLOAD THE FULL ARTICLE HERE.

Wellington Laboratories full catalogue is available throughout Europe and the Middle East from Greyhound Chromatography and Allied Chemicals, 6 Kelvin Park, Birkenhead, Merseyside, CH41 1LT

   View or Download the full catalogue here.

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