scholarly journals A numerical solution to three-dimensional multiphase transport of volatile organic compounds in unsaturated soils -- with an application to the remedial method of in-situ volatilization. Part I: Theoretical development

1992 ◽  
Author(s):  
T. Filley ◽  
D. Tomasko
Keyword(s):  
Volatile Organic Compounds ◽  
Numerical Solution ◽  
Organic Compounds ◽  
Unsaturated Soils ◽  
Three Dimensional ◽  
Theoretical Development ◽  
Multiphase Transport ◽  
Volatile Organic

In situ gold nanoparticle-decorated three-dimensional tin dioxide nanostructures for sensitive and selective gas-sensing detection of volatile organic compounds

2017 ◽  
Vol 5 (25) ◽  
pp. 6193-6201 ◽  
Author(s):  
Tian-Li Han ◽  
Yu-Teng Wan ◽  
Jin-Jin Li ◽  
Hui-Gang Zhang ◽  
Jin-Huai Liu ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Volatile Organic Compounds ◽  
Gold Nanoparticle ◽  
Organic Compounds ◽  
Tin Dioxide ◽  
Gas Sensing ◽  
Three Dimensional ◽  
High Response ◽  
Volatile Organic

A three-dimensional tin dioxide nanostructure in situ-decorated with gold nanoparticles was presented, which exhibited high response and selectivity towards volatile organic compounds.

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

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

scholarly journals Low Molecular Weight Volatile Organic Compounds Indicate Grazing by the Marine Rotifer Brachionus plicatilis on the Microalgae Microchloropsis salina

Metabolites ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 361
Author(s):  
Carolyn L. Fisher ◽  
Pamela D. Lane ◽  
Marion Russell ◽  
Randy Maddalena ◽  
Todd W. Lane
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Alternative Energy ◽  
Brachionus Plicatilis ◽  
Machine Learning Algorithms ◽  
Algal Culture ◽  
Mass Spectral ◽  
Volatile Organic ◽  
Non Destructive

Microalgae produce specific chemicals indicative of stress and/or death. The aim of this study was to perform non-destructive monitoring of algal culture systems, in the presence and absence of grazers, to identify potential biomarkers of incipient pond crashes. Here, we report ten volatile organic compounds (VOCs) that are robustly generated by the marine alga, Microchloropsis salina, in the presence and/or absence of the marine grazer, Brachionus plicatilis. We cultured M. salina with and without B. plicatilis and collected in situ volatile headspace samples using thermal desorption tubes over the course of several days. Data from four experiments were aggregated, deconvoluted, and chromatographically aligned to determine VOCs with tentative identifications made via mass spectral library matching. VOCs generated by algae in the presence of actively grazing rotifers were confirmed via pure analytical standards to be pentane, 3-pentanone, 3-methylhexane, and 2-methylfuran. Six other VOCs were less specifically associated with grazing but were still commonly observed between the four replicate experiments. Through this work, we identified four biomarkers of rotifer grazing that indicate algal stress/death. This will aid machine learning algorithms to chemically define and diagnose algal mass production cultures and save algae cultures from imminent crash to make biofuel an alternative energy possibility.

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