1st Detect Corp - TEDW 2013 - rev 1

01ST DETECT PROPRIETARYWWW.1STDETECT.COM

NOVEL SAMPLE INLETS TO ENABLE MASS

SPECTROMETRIC DETECTION OF

EXPLOSIVES

WARREN MINO, DAVID RAFFERTY, ABRAR RIAZ, MICHAEL SPENCER, JAMES WYLDE

TEDW 2013


INTRODUCTION

MASS SPECTROMETRY IN EXPLOSIVES DETECTION

RECAP OF PREVIOUS WORK

SAMPLE INTRODUCTION

CASE STUDY

CONCLUSION

PRESENTATION OUTLINE


CORPORATE BACKGROUNDSUBSIDIARY OF ASTROTECH CORPORATION (NASDAQ:ASTC) – AUSTIN TX

‒ Leverage technology developed for space program into terrestrial space

‒ Amibitious needs of space program = incubate cutting edge technologies

1st DETECT FOUNDED NOV 2007 TO COMMERCIALIZE MS TECHNOLOGY DESIGNED FOR SPACE PROGRAM

‒ Air quality monitoring for ISS‒ 400 compounds to low ppb‒ NO SERVICE DEPOTS NEARBY!

OVERVIEW – 1ST DETECT CORP


OVERVIEW – 1ST DETECT MMS-1000™

TRUE PORTABLE MASS SPECTROMETER Cylindrical Ion Trap Commercial release at Pittcon 2012

PORTABLE SIZE & LIGHTWEIGHT 6”x 12”x 8” / 4 - 7 kg (9-16 lbs.)

HIGHLY SENSITIVE ppm - direct leak ppb - membrane inlet ppt - pre-concentrator

KEY PERFORMANCE SPECIFICATIONS 30 - 450 amu (customizable to ~650 amu) < 0.5 amu resolution (< 0.3 amu typical) 1 sec cycle time (user programmable) MS2 capable (MS3 in manual mode) with > 90% efficiency ~ 45 W average power consumption (~65 W max) Auto mass tune with internal standard

DEPLOYMENTS Food and Beverage Evolved gas analysis CWA / threat detection Air quality monitoring

COST COMPETITIVE WITH IMS


MASS SPECTROMETRY & EXPLOSIVES

Any detection technology is a trade off

More threats

Complexity

Information

SWaP

69

131

155

219

368355

343193

393

305

293

255

243

100

205

267

443

Simplicity


MINIATURE ION TRAP

MINIATURE ION TRAP:Easily miniaturized: hyperbolic -> cylindrical electrodes

No loss of resolution

No loss of mass range

Manufacturable architecture

Ruggedized for field use

“Free” MS/MS

BUT: Sensitivity can be impacted


MINIATURE ION TRAP






“Free” MS/MS



SOLUTION

PRE-CONCENTRATOR (PRECON-1000™)Resistive mesh coated with sorbent materialMesh corrugated and inserted into ¼” ID quartz tubeInternal manifold & valve systemDedicated internal controller and power supply boardsInternal sampling pump (MS roughing pump)

InstalledMesh AssemblyCorrugated MeshCoated Mesh


104 Gain

PERFORMANCE

PERFORMANCEMeasured concentration gain ~104

Enabled low pptr to sub pptr sensitivity with miniature ion trap MS


RDX EGDN

HMTD PETN

CASE STUDY – EXPLOSIVE HEADSPACE


UREA NITRATE AMMONIUM NITRATE

SODIUM PERCHLORATE POTASSIUM PERMANGANATE

CASE STUDY – EXPLOSIVES HEADSPACE


INTRODUCTION

MASS SPECTROMETRY IN EXPLOSIVES DETECTION

RECAP OF PREVIOUS WORK

SAMPLE INTRODUCTION

CASE STUDY

CONCLUSION

PRESENTATION OUTLINE


Direct injection –vialo Sample deposited in glass vialo Chilled to freeze sample before

evacuationHeated vialo Direct or IRo Internal desorber

Allows direct injection of sample into vacuum chamberDirect sampling and IR heating under test

EXPLOSIVES SAMPLING – DIRECT


EXPLOSIVES SAMPLING – DIRECT

HMX RDX

HMTD TNT


MS ETD DETECTOR

MASS SPECTROMETRY: CROSSING THE VACUUM

Membrane SelectivitySensitivity

API Gas Load = PumpsSWaP

Split Flow Sensitivity


DESORPTION

SOLUTION: EVACUATED DESORBERSample collected on standard swab

Evacuated prior to desorption

Functionally mimics pre-concentrator

No sample loss, low power, no selectivoty


DESORPTION


EXPLOSIVES SAMPLING – SWAB

TNT HCE

EGDN


PRECONCENTRATOR (HEADSPACE):o RDXo EGDNo HMTDo PETNo Urea Nitrate

EVACUATED DESORBER :o TNTo Hexachloroethane

DIRECT INJECTION:o HMXo RDX

CONCLUSIONS:o Demonstrated ionization with EIo Demonstrated trapping in miniature CITo Characteristic peaks identifiedo Demonstrated thermal desorption of particulate and SVOC compounds

o Ammonium Nitrateo Sodium Permanganateo Potassium Permanganateo Sodium Perchlorateo Potassium Perchlorate

EXPLOSIVES DETECTION - SUMMARY

SUMMARY OF EXPLOSIVES ANALYSIS

o HMTDo TNT

o EGDN


Residual toluene

Cinnamaldehyde

OATMEAL


Optimized flow paths

Hybrid desorber -> P/C

Alternate heating methods

Alternate ionization

FUTURE WORK

Molecular IonMethyl Salicylate152 Da


CONCLUSION

THANK YOU FOR YOUR TIME!

Questions

Comments

1st Detect Corp - TEDW 2013 - rev 1

Documents

Transcript of 1st Detect Corp - TEDW 2013 - rev 1