Implementation and optimisation of a high-temperature loading strategy of liquid standards in the quantification of volatile organic compounds using solid sorbents

2012 ◽  
Vol 36 (3) ◽  
pp. 503-510 ◽  
Author(s):  
Carlos Rodríguez-Navas ◽  
Rafael Forteza ◽  
Víctor Cerdà
Keyword(s):  
High Temperature ◽  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Solid Sorbents ◽  
Volatile Organic

Energetics of cellulose and cyclodextrin glycosidic bond cleavage

2017 ◽  
Vol 2 (2) ◽  
pp. 201-214 ◽  
Author(s):  
Cheng Zhu ◽  
Christoph Krumm ◽  
Gregory G. Facas ◽  
Matthew Neurock ◽  
Paul J. Dauenhauer
Keyword(s):  
High Temperature ◽  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Bond Cleavage ◽  
Thermochemical Conversion ◽  
Lignocellulosic Materials ◽  
Renewable Chemicals ◽  
Volatile Organic ◽  
Glycosidic Bond Cleavage ◽  
Long Chain

Thermochemical conversion of lignocellulosic materials for production of biofuels and renewable chemicals utilizes high temperature to thermally decompose long-chain cellulose to volatile organic compounds.

Dry purge for the removal of water from the solid sorbents used to sample volatile organic compounds from the atmospheric air

The Analyst ◽  
2000 ◽  
Vol 125 (11) ◽  
pp. 2112-2117 ◽  
Author(s):  
Janusz Gawłowski ◽  
Tomasz Gierczak ◽  
Elżbieta Pietruszyñska ◽  
Małgorzata Gawryś ◽  
Jan Niedzielski
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Atmospheric Air ◽  
Solid Sorbents ◽  
Volatile Organic

Grey System Theoretical Analysis on the Influence of Volatile Organic Compounds Emission from Asphalt on its Performance

2013 ◽  
Vol 753-755 ◽  
pp. 481-485
Author(s):  
Hong Hua Zhang ◽  
Shao Peng Wu ◽  
Ling Pang ◽  
Kim Jenkins ◽  
Man Yu ◽  
...  
Keyword(s):  
System Theory ◽  
High Temperature ◽  
Volatile Organic Compounds ◽  
Physical Properties ◽  
Organic Compounds ◽  
Grey System Theory ◽  
Grey System ◽  
Voc Emission ◽  
Volatile Organic ◽  
Light Components

Light components in the asphalt can volatilize under the circumstances of high temperature or long-term service process, leading to the deteriorating of the asphalt pavement. This paper tried to discuss the influences of volatile organic compounds (VOC) emission from the asphalt on physical properties in the high temperature (at 180) by grey system theory. Both Heat and Vacuum environment were monitored as the emission conditions and the emission temperature was 180°C, physical properties of asphalt, released and unreleased were analyzed. Basic tests, including mass change, chemical compositions, penetration and soften point, were used to compare the influences of VOC emission on the asphalts performances. Meanwhile, grey system theory was used to investigate the sequent performances influenced by VOC emission. Results show that physical properties and four generic components of the asphalts are affected obviously in these two emission conditions, and the oxygen may promote VOC emission from the asphalt. In additional, the greatest factor associating with VOC emission is light components in the asphalt.

Analysis on Health Risk of Volatile Organic Compounds of Smoked Bamboo Biomaterial by TD-GC-MS

2011 ◽  
Vol 467-469 ◽  
pp. 1697-1701 ◽  
Author(s):  
Wan Xi Peng ◽  
Qiu Xue ◽  
Feng Juan Wu ◽  
Xu Zhang ◽  
Zhong Feng Zhang
Keyword(s):  
Acetic Acid ◽  
High Temperature ◽  
Volatile Organic Compounds ◽  
Health Risk ◽  
Organic Compounds ◽  
Human Settlements ◽  
Potential Health ◽  
Potential Health Risk ◽  
Volatile Organic

Smoked bamboo, which was made by bamboo in high temperature smoke, is a new indoors materials. In order to evaluate its potential health risk to human settlements, the volatile organic compounds of smoked bamboo biomaterial were adsorbed and determined by TD-GC-MS. And the main constituents of volatiles at 60°С were cyclononasiloxane, octadecamethyl-(35.14%), acetic acid(23.27%), cyclotrisiloxane, hexamethyl- (9.53%), bicyclo[4.4.0]dec-1-ene,2-isoprop yl-5-methyl-9-methylene-(7.56%), silane, 1,4-phenylenebis[trimethyl(4.32%), 1,3-benzodioxole, 5-(2-propenyl)- (3.47%), cedrol(2.75%), etc. (2) The main constituents of volatiles at 130°С were acetic acid(43.78%), 2,5-furandione, dihydro-3- methylene-(16.57%), 1,3-benzodioxole, 5-(1-propenyl)-,(z)-(6.75%), octasiloxane, 1,1,3,3,5,5,7,7,9,9, 11,11,13, 13,15,15- hexadecamethyl -(4.09%), bicyclo[2.2.1]heptan-2-one, 1,7,7- trimethyl-, (1s)- (3.21%), etc. Generally, the smoked bamboo biomaterial was safe under 60-130°С.

Volatile Organic Compounds emitted during High-temperature Alfalfa Drying

2006 ◽  
Vol 94 (1) ◽  
pp. 57-66 ◽  
Author(s):  
Ajay Dalai ◽  
Greg Schoenau ◽  
Dharani Das ◽  
Phani Adapa
Keyword(s):  
High Temperature ◽  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Volatile Organic

Analysis of the Volatile Organic Compounds (VOCs) during the Regeneration of Post-Consumed Poly(Ethylene Terephthalate) Using HS-GC-MS Method

2019 ◽  
Vol 944 ◽  
pp. 1208-1214
Author(s):  
Shan Shan Liu ◽  
Ji Yue Hu ◽  
Dan Qin ◽  
Ling Ling Gao ◽  
Ye Chen ◽  
...  
Keyword(s):  
High Temperature ◽  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Raw Materials ◽  
Recycled Pet ◽  
Voc Emissions ◽  
Volatile Organic ◽  
Manufacturing Techniques ◽  
Poly Ethylene ◽  
Heat Preservation

VOCs emissions from recycled PET are recognized as one of the major causes of poor healthy condition. Much attention has been increasingly focused on VOCs produced from regenerated PET for their significance in ecological safety. These emissions may be strongly influenced by the raw materials and manufacturing techniques of the recycled PET. However, there is very little published information regarding this issue. The purpose of this study was to examine VOCs releasing from reprocessed productions when exposed to high temperature or other extreme conditions.In this study, we determined and compared VOCs emissions from samples after different manufacturing stages such as PET popcorn, dried PET popcorn, screw melts, undrawed fibers and drawed fibers, including their species and content. To simulate the VOC emissions of samples processed with the high temperature in longer time during screw melting, we investigated VOCs from screw melts utilizing Thermo Gravimetric-Mass Spectrometry (TG-MS) with 90 min in 280°C . We found that: (1) The optimisation of the equilibration procedure for volatile organic compounds was performed and the optimal equilibration conditions were determined to be 30 min at 120°C ; (2) Seven individual VOCs were identified: considerable VOC content changes during the manufacturing process; and the drying was tremendously helpful in reducing the VOC emissions from PET popcorn; formaldehyde, acetaldehyde and TVOC were reduced by 24%, 58% and 50%, respectively after drying; while acetaldehyde, benzene, benzaldehyde and TVOC increased dramatically after screw melting; (3) The VOCs were released at the initial stage of heat preservation (about 5 min) and VOCs content came to the maximum which indicated the almost immediate thermal degradation in screw melting.

scholarly journals Investigation of volatile organic compounds in the cabin air of new cars

2012 ◽  
Vol 149 (2) ◽  
pp. 39-48
Author(s):  
Anna GOŁDA-KOPEK ◽  
Joanna FABER ◽  
Damian ŁOMANKIEWICZ ◽  
Krzysztof BRODZIK
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Public Concern ◽  
Vehicle Interior ◽  
Solid Sorbents ◽  
Volatile Organic ◽  
Different Types ◽  
Human Health Effects ◽  
Vocs Emission ◽  
Potential Human Health

Potential human health effects of material emissions in new car cabins are of great public concern. In present work, four new cars with different equipment were tested to assess the nature of volatile organic compounds (VOCs) associated with new vehicle interior. Air samples were collected on solid sorbents and analyzed using thermal desorption and GCMS/ FID. Different types of sorbents were applied to effectively adsorb VOCs. The maximal number of VOCs, trapped from the in-vehicle air, was identified and compounds occurring in air from cabins of all examined vehicles were selected and classified. VOCs emission from identified compounds was calculated and potential sources of identified VOCs were discussed. For aromatic hydrocarbons, the comparison of individual VOCs concentrations was performed.

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