质谱仪
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· 三级过滤四极质谱仪
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催化、吸附分析仪
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质子传递反应质谱仪
· PTR-MS
光电半导体分析设备
· 脉冲激光沉积镀膜系统
· 微纳米扫描电导分析仪
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光学仪器
· 数字全息显微镜系列
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· 太阳光模拟器
纳米压痕仪
· 纳米压痕仪
全功能稳定度分析仪
· 全功能稳定度分析仪
· Dispersion Analyser
· Stability Analyzer
· Separation Analyser
材料加工分析仪器
· 材料加工分析仪器
真空泵 Vacuum Pump




PTR+SRI-MS
Switchable Reagent Ions

Enter the new dimension of online mass spectrometry with IONICON PTR+SRI-MS featuring H3O+, NO+ and O2+ as precursor ions.

Quantify more volatile compounds than ever in real-time with PTR+SRI-MS and take advantage of single-digit pptv-level detection limits, only available with IONICON PTR-MS.

Order your new IONICON PTR-MS with SRI (switchable reagent ions) capabilities or consult with us concerning upgrade capabilities of your instrument.

Advantages of using H3O+, NO+ and O2+ as precursor ions

H3O+ is ideal for many applications as our customers have proven for more than a decade. In some cases however it can be useful to use more than one reagent ion in your PTR-MS.

By using PTR+SRI-MS isomeric VOC compounds can be separated and instantaneously quantified (the differentiation of isobaric compounds is already possible by using IONICON PTR-TOF-MS).

NO+ is like H3O+ a soft ionizer, ionization occurs mainly through charge transfer, whereas O2+ is found to be a less soft chemical ionization agent and can be used where proton transfer from H3O+ does not work. Therefore more VOCs than ever can be quantified in real-time with PTR+SRI-MS.

Market-leading detection limit also with PTR+SRI-MS

We have developed a PTR+SRI-MS where the chemical reagent ions NO+ and O2+ are generated in our ion source at intensities matching or in case of NO+ even surpassing those of traditional IONICON PTR-MS H3O+ ions by up to 40%, thus enabling ultra-high sensitivity and ultra-low detection limits also for this new dimension of PTR-MS technology.

This overcomes one of the biggest down-sides of competing technologies like SIFT-MS, where mass pre-selection of ions is employed and a carrier gas dilutes the sample, at the expense of some two orders of magnitude lower detection sensitivity for VOCs.

The PTR+SRI-MS products

H3O+,NO+ and O2+ as precursor ion package is available as an option for the following IONICON products:

 









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