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News and updates from the PTR-MS community

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Archive for the ‘Science Update’ Category

The New Exclusive SRI-MS Reagent Ion: NH4+ and Its Benefits

A novel proprietary method of NH4+ production for IONICON customers

In PTR-TOF-MS traditionally H3O+ reagent ions produced from H2O vapor are used. NH4+ reagent ions have been mentioned in literature as being particularly beneficial because of higher sensitivity (less fragmentation) and higher selectivity (higher proton affinity). However, so far toxic and corrosive ammonia was needed for NH4+ production.

We developed a novel method of producing NH4+ solely from H2O vapor and N2 (gas cylinder or filtered air) in the established hollow cathode ion source, without the need of any ammonia, by adjusting the pressure and electric fields in the source (PCT application submitted). That is, the reagent ions can be rapidly switched. (more…)

Free download of Contributions to the 8th PTR-MS Conference 2019

All abstracts from the 8th International PTR-MS Conference are now online

In February 2019, the must-attend event for all PTR-MS users took place, attracting more than 100 participants from 18 nations. There’s a short review if you would like to know more.

Have you ever wondered what this huge number of IONICON instrument users achieves with their instrument, what they investigate, which complex processes they capture or industrial VOC monitoring challenge their solve with our instruments?

Book of Contributions to the 8th International PTR-MS Conference 2019

Download the brand new book of submitted conference abstracts and see why our customers rely on genuine PTR-MS, an IONICON-exclusive technology, featuring our patented Ion-Chemistry Quality and TRU-E/N™.

 

The 8th International PTR-MS Conference, Innsbruck, Austria – a review

Must-attend science forum attracted over 100 conferees from 18 nations

At the beginning of February 2019, the International PTR-MS Conference was held for the 8th time. Ever since the first International PTR-MS Conference in 2003, organized by the Institute of Ion Physics of the University of Innsbruck and sponsored by IONICON, the event became a fixed point in the scientific agenda of many of our international peers.

Talks at the 8th International PTR-MS Conference took place in a historic venue of the University of Innsbruck

Since then the conference evolved, attracting more and more participants filling larger venues. If at the very beginning technology enthusiasts and early-adopters were gathering to exchange and network on their experiences with the first IONICON Quadrupole-PTR-MS instruments, the meeting soon became the PTR-MS event for all IONICON instrument users. The program comprised a selection of parallel sessions covering the very broad field of applications that modern PTR-TOF instruments are successfully used in. (more…)

PTR-MS now with Patented Ion-Chemistry Quality and TRU-E/N

The proprietary TRU-E/N™ method for utmost quantification accuracy

Founded by the inventors of Proton-Transfer-Reaction – Mass Spectrometry more than 20 years ago, IONICON has always been renowned for absolutely precise control of the ion chemistry during chemical ionization.

ION-BOOSTER funnel and hexapole ION-GUIDE with TRU-E/N

For IONICON this fact is still true even after the introduction of Radio Frequency (RF) components for focusing and transferring the ions from the reaction region into the mass analyzer.

Several manufacturers of CIMS instruments are trying to boost the sensitivities to the high spheres in which IONICON’s PTR-MS instruments perform. However, this comes at an extremely high cost: control over the ion-chemistry is lost. Undefined fragmentation of analytes renders a comparison of results with values published in the ample PTR-MS literature and, most importantly, accurate quantification impossible. As the reduced electric field strength (E/N) in the reaction region cannot be calculated any more as soon as RF devices are implemented, no E/N values can be stated upon publishing of measurements*, which seriously limits the reproducibility of results. (more…)

Taking CHARON PTR-TOF to the Sky

At the Frontier of Airborne Research aboard NASA’s Flying Laboratory

Using the opportunity provided by NASA’s Student Airborne Research Program (SARP) we gave wings to our newly developed CHARON aerosol inlet. In cooperation with the University of Oslo our team combined CHARON and a custom built PTR-TOF 4000 instrument.

“Business Class” for our airworthy CHARON PTR-TOF 4000, monitoring VOCs & aerosol in real-time.

Airworthiness requires withstanding of heavy G-forces, coping with pressure changes and most importantly being fail safe. Therefore unique modifications to CHARON have been made and thoroughly tested before getting airborne. (more…)

PTR-MS is not PTR-MS?!

IONICON-grade PTR-MS Quality: Important Ion Chemistry Dimensions

You’ve got used to expecting an IONICON-grade instrument when you see the abbreviation “PTR-MS“? After all, more than 350 IONICON PTR-MS instruments yielded hundreds of high-impact papers and allowed gaining insights in various science domains. But, what determines a real IONICON PTR-MS and how does it compare to other CIMS technologies that sometimes are also claimed to be “PTR-MS”?

Watch our webinar and learn more about the 4 quality dimensions that determine genuine PTR-MS, a technology only available from IONICON:

Don’t have time for the full webinar? Read about the 4 quality dimensions on our website.

CHARON Real-Time Aerosol Inlet System for PTR-TOFMS

Direct Sampling and Analysis of Atmospheric Particulate Organic Matter

An international team of researchers from the University of Innsbruck (Austria), the IRCELYON in Lyon (France) and the University of Oslo (Norway) recently studied the application of the new CHARON Particle Inlet to directly sample and analyze the chemical composition of atmospheric sub-µm particulate organic matter (POM) by PTR-TOFMS.

CHARON PTR-TOF 6000 X2 with two inlets in parallel for real-time VOC and particle analysis

By conducting laboratory based measurements of pure aerosolized substances the team could demonstrate the quantitative response of CHARON PTR-TOFMS to a range of typical POM substances down to single-digit ng m-3 mass concentrations. This quantitative response combined with the low selectivity of PTR-MS led to a good agreement in the detection of total urban POM in comparison with other state-of-the-art aerosol instrumentation.  (more…)