Real-Time VOC Analysis with Market Leading Performance

Vocus PTR-TOF

Market Leading PTR-MS Performance

With sub-ppt limits of detection and mass resolving power up to 15000, the Vocus PTR-TOF is taking laboratory and field analysis of VOCs in exciting new directions.

Sensitivitycps/ppb benzene

Vocus PTR-TOFstandard

Vocus PTR-TOF Ccompact

Vocus PTR-TOF 2Rhigh resolution

10000

10000

10000

< 1 ppt

< 1 ppt

< 1 ppt

Limit of Detection (LOD)

1-min, BTX

Resolving Power at Specified Sensitivitya

M/ΔM

5000

1000

10000a. Each model can be operated with higher resolving power at reduced sensitivity.

Ultra-Low Limits of Detection•Proprietary Vocus reaction cell reduces wall losses and focuses product ions •Maximize analyte signals with combination of Vocus reaction cell, ion cooling interface, and sensitive TOF mass analyzer

•Up to 10x the sensitivity of other commercial PTR-MS•Sub-ppt limits of detection in seconds

Highest Available PTR-MS Mass Resolving Power•Mass resolving power up to 15000 enables identification of isobaric compounds in complex mixtures

•Identification of analytes and confirmation of peak assignments based on exact mass and isotope patterns

Select a Model to Meet Your Needs

20 40 60 80 100 120 140 160 180 200 220

100

102

104

106

mass/charge (Th)

Inte

nsiti

ty (c

ps)

111 111.05 111.1 111.150

20

40

60

80

Inte

nsiti

ty (c

ps)

C6H7O2+

C7H11O+

C8H15+

Resolving Power up to 15000with the Vocus PTR-TOF 2R

This mass spectrum shows the diverse collection of biogenic VOCs that was emitted when a single pine needle was cut in lab air in front of the inlet of the Vocus PTR-TOF 2R. The inset demonstrates the capability of the 2R to separate and identify isobars.

Real-Time Monitoring of VOCs with Millisecond Time Response

Confident analysis of complex mixtures often demands resolution of individual peaks.

Isoprene (C5H8) Monoterpenes (C10H16) Sesquiterpenes (C15H24) Menthyl Acetate (C12H22O2)

0 10 20 3010

100

101

102

103

104

105

106

Time after ingestion (s)

Conc

entr

atio

n (p

ptv)

ExhaleInhale

Exhale

-1

-10-20-30

Real-Time Monitoring of VOCs with Millisecond Time Response

Human breath was monitored in real time at 3 Hz before and after the ingestion of a RicolaTM herb cough drop. Hundreds of

compounds were present in the post-ingestion data, including monoterpenes, sesquiterpenes, and other compounds of

herbal origin. A subset of detected compounds is shown in order to demonstrate the fast time response and

broad dynamic range of the Vocus PTR-TOF.

The Vocus PTR-TOF can quantify dynamic changes in evenultra-low concentration compounds.

The RF focusing and uniform drift fields of the Vocus source enable real-time analysis of volatile organic compounds (VOCs) with unpre-cedented limits of detection and speed.

Sample Flow Rate

Operating Pressure

Axial Gradient

Reagent Ions

50 – 500 sccmtypical 150 sccm0.5 – 5 mbartypical 1-2 mbarUniform Linear Field0-5 V/mm

(H20)nH3O+, NO+, O2+

Sub-ppt limits of detection in secondsCalculated as 3 times the standard deviation of signal with ultra clean air and assuming the sensitivity of BTX.

VocusTM is a Leap Forward in PTR Source Design

0 50 100 150 200 250 300 350 400 450 500 5500.001

0.01

0.1

1

10

mass/charge (Th)

LOD

(ppt

v)

1 sec 1 min

1 pptv

CompactField-Deployable Architecture 60 x 40 x 80 cm80 kg1200 W

Slide 3 (Instrument photo) in file: Introducing_the_icpTOF_Webinar_2017_Jan_c.pptx

icpTOF_perspective_300dpi.png

Vocus PTR-TOF

CompactField-Deployable Architecture 60 x 40 x 80 cm80 kg1200 W

Vocus PTR-TOF

aerodyne.comptr-info@aerodyne.com

icpTOF_perspective_300dpi.png