Environmental Hazard
Remediation with
EST zNose®
Electronic Sensor Technology,www.estcal.com
Inc. www.estcal.com
EST’s zNose®
Solid state integrating GC detector + Single, non-specific surface
acoustic wave (SAW) mass detector
= zNose®
Read about zNose® in detail here.
Electronic Sensor Technology,www.estcal.com
Inc. www.estcal.com
Why zNose® over Electronic Nose (eNose)
Read about zNose® in detail here.
Electronic Sensor Technology,www.estcal.com
Inc. www.estcal.com
How does zNose® work for environmental scanning?
Open Tubular
Injector/
Desorber 25 –
300 degree
Liquid
Headspace
Sample
GC/SAW vapor
System
Ambient Air
Sample
Heated
Vapor
Sampler
210 C
30ccm
Sample
Preconcentr
ator &
Injector
Read about zNose® in detail here.
Electronic Sensor Technology,www.estcal.com
Inc. www.estcal.com
Temperature
Programmed
GC Column
1-18 C /Sec
max of 200 C
SAW
Integrating
Detector
0-125 C
2 Key Environmental Testing Use-cases of zNose®
Read about zNose® in detail here.
Electronic Sensor Technology,www.estcal.com
Inc. www.estcal.com
A typical zNose® measurement of a mixture of BTEX
A tedlar bag is filled with a known concentration of
benzene-toluene-ethylbenzene-Xylene (BTEX) vapor
As GC/SAW can separate and speciate the individual
analytes, calibration can be performed using a
single measurement of a mixture of standard
analyte concentrations
The measurement reveals the following results • the lower trace shows the frequency of the SAW detector
• the upper trace displays the derivative of frequency.
Read about zNose® in detail here.
Electronic Sensor Technology,www.estcal.com
Inc. www.estcal.com
A typical zNose® measurement of a mixture of BTEX
A series of seven identical
measurements were performed on a
tedlar bag containing a concentration of
BTEX vapors spanning 182-364 ppb
Key Observations of these analysis were:
• For toluene, ethylbenzene, and xylene the MDLs
were less then 10 ppb.
• For benzene, the MDL was approximately 20 ppb.
Read about zNose® in detail here.
Electronic Sensor Technology,www.estcal.com
Inc. www.estcal.com
Contact us
We are keen to tell you more
about EST zNOSE®
Email us at:
[email protected]
Electronic Sensor Technology,www.estcal.com
Inc. www.estcal.com