scholarly journals Chemiresistor microsensors for in-situ monitoring of volatile organic compounds : final LDRD report.

2003 ◽  
Author(s):  
Michael Loren Thomas ◽  
Robert Clark Hughes ◽  
Ara S Kooser ◽  
Lucas K McGrath ◽  
Clifford Kuofei Ho ◽  
...  
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
In Situ Monitoring ◽  
Volatile Organic

Online sensing of volatile organic compounds in groundwater using mid-infrared fibre optic evanescent wave spectroscopy: a pilot scale test

2003 ◽  
Vol 47 (2) ◽  
pp. 121-126 ◽  
Author(s):  
H. Steiner ◽  
K. Staubmann ◽  
R. Allabashi ◽  
N. Fleischmann ◽  
A. Katzir ◽  
...  
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Pilot Plant ◽  
Pilot Scale ◽  
In Situ Monitoring ◽  
Fibre Optic ◽  
Sensor Head ◽  
Sensing System ◽  
Volatile Organic

A prototype sensing system for in-situ monitoring of volatile organic compounds in contaminated groundwater was tested at a pilot scale plant. The sensor consists of a commercially available Fourier transform infrared spectrometer, connected to a 6 m long infrared transparent silver halide fibre optic cable. A 10 cm long core-only section at the centre of the fibre is mounted on a sensor head and coated with a hydrophobic polymer layer, while the remaining fibre is protected by Teflon tubing and thus not in contact with the surrounding media. The sensor head was immersed into the monitoring wells of the pilot plant testing the sensor system under circumstances close to field conditions and typical for in-situ measurements. The pilot plant consists of a 1 m3 cubic tank filled with gravel. A pump is used to circulate water horizontally through the tank, simulating a natural aquifer. The evolution of the concentration of analytes injected into the system is monitored with time using the developed prototype sensing system. The results are validated by corresponding sampling and analysis with headspace gas chromatography.

scholarly journals Development of a Surface Acoustic Wave Sensor for In-Situ Monitoring of Volatile Organic Compounds

Sensors ◽  
2003 ◽  
Vol 3 (7) ◽  
pp. 236-247 ◽  
Author(s):  
Clifford Ho ◽  
Eric Lindgren ◽  
K. Rawlinson ◽  
Lucas McGrath ◽  
Jerome Wright
Keyword(s):  
Volatile Organic Compounds ◽  
Acoustic Wave ◽  
Surface Acoustic Wave ◽  
Organic Compounds ◽  
In Situ Monitoring ◽  
Acoustic Wave Sensor ◽  
Volatile Organic

Near infrared chemo-responsive dye intermediaries spectra-based in-situ quantification of volatile organic compounds

2018 ◽  
Vol 254 ◽  
pp. 597-602 ◽  
Author(s):  
Felix Y.H. Kutsanedzie ◽  
Lin Hao ◽  
Song Yan ◽  
Qin Ouyang ◽  
Quansheng Chen
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Near Infrared ◽  
Volatile Organic

In-Situ Analysis of Volatile Organic Compounds in Biogas Fermentation Processes Using a Metal Oxide Gas Sensor Array

2020 ◽  
Vol MA2020-01 (28) ◽  
pp. 2153-2153
Author(s):  
Binayak Ojha ◽  
Divyashree Narayana ◽  
Margarita Aleksandrova ◽  
Heinz Kohler ◽  
Matthias Schwotzer ◽  
...  
Keyword(s):  
Volatile Organic Compounds ◽  
Metal Oxide ◽  
Gas Sensor ◽  
Organic Compounds ◽  
Sensor Array ◽  
Fermentation Processes ◽  
Gas Sensor Array ◽  
Volatile Organic ◽  
Metal Oxide Gas Sensor
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