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Atmospheric pressure chemical ionization-tandem mass spectrometry (APCI-MS/MS) was applied for the first time to the direct analysis of octamethylcyclotetrasiloxane (D4) and decamethylcyclopentasiloxane (D5) in gaseous matrixes without extraction or prior chromatographic separation. Mass spectrometric characteristics of both compounds under APCI conditions and their fragmentation behavior in MS/MS were investigated. Unlike the classical gas chromatography/mass spectrometry (GC/MS), which involves solvent extraction before gas chromatography, the proposed approach prevents contamination from GC system components and provides unambiguous structural assignments. The method performs well achieving good linearity (R² > 0.997), low limits of detection (4-6 μg/m³), good precision (RSD < 10%) and accuracy (>93%), and a wide dynamic range. Its applicability to real-world samples was evaluated through measurements of D4 and D5 concentrations in air and biogas samples. The high sensitivity, selectivity, and reliability of this method render our approach a good alternative to the commonly used GC/MS method.

You can acces the full article at this address:

http://pubs.acs.org/action/doSearch?action=search&author=serge+moore&qsSearchArea=author&type=within&publication=40025958

BASi provides clients with increased sample analysis speed and quick turnaround with the LDTD technology. Fast screening is combined with accurate quantification results, to benefit any bioanalytical studies.

http://www.euroinvestor.fr/news/story.aspx?id=10569352&bw=20090807005046

Phytronix launches its new LDTD-384 plate platform, the unique way for acheiving 1400 samples analysis per hour (sample-to sample run time as low as 2.5 seconds).  Phytronix proves again its leadership in Ultra-High Throughput technology for mass spectrometry by developing a new shotgun approach where the sample is introduced in the mass spectrometer by a fast LASER DIODE THERMAL DESORPTION desorption process and ionized by an atmospheric pressure chemical reactions (LDTD-APCI). No matter what your application field is, the LDTD technology is an unmatched alternative to increase your throughput. www.ldtd-ionsource.com

Phytronix Technologies Inc. and Agilent Technologies Inc. have signed a co-marketing agreement

Thermo Fisher Scientific Installs TSQ Quantum^TM Mass Spectrometer
on a Bus for Mobile Environmental Monitoring

The US patent for the LDTD source has been accepted.

Thermo Fisher Scientific Partners with Phytronix Technologies to Offer Ultra High-Speed LDTD Technology for Large Volume LC/MS Analyses

Phytronix Technologies and Thermo Fisher Scientific have signed a distribution agreement.

The US patent for the LDTD source has been accepted.

In collaboration with Merck Frosst Canada Ltd. This paper describes the development of a high-throughput method for the analysis of cytochrome P450 (CYP)

In the Economic and financial profile of Québec, the ministère des Finances of the gouvernment of Québec as presented Phytronix Technologies as a "Québec success story".