Results 21 to 30 of about 249,172 (293)

Volatile Organic Compound Optical Fiber Sensors: A Review

Sensors, 2006
Volatile organic compound (VOC) detection is a topic of growing interest withapplications in diverse fields, ranging from environmental uses to the food or chemicalindustries.
Francisco J. Arregui, Candido Bariain, Ignacio R. Matias, Cesar Elosua   +3 more
doaj   +1 more source

Broadband Dielectric Spectroscopic Detection of Ethanol: A Side-by-Side Comparison of ZnO and HKUST-1 MOFs as Sensing Media

Chemosensors, 2022
The most common gas sensors are based on chemically induced changes in electrical resistivity and necessarily involve making imperfect electrical contacts to the sensing materials, which introduce errors into the measurements.
Papa K. Amoah, Zeinab Mohammed Hassan, Pengtao Lin, Engelbert Redel, Helmut Baumgart, Yaw S. Obeng   +5 more
doaj   +1 more source

Analysis of pathogenic bacteria using exogenous volatile organic compound metabolites and optical sensor detection [PDF]

, 2015
A novel, low-cost and simple method for the detection of pathogenic bacteria is proposed. The approach is based on the generation of an exogenous volatile organic compound (VOC) produced by the addition of an enzyme substrate to the bacterial sample. The
Dean, John, Perry, John, Reed, Stephen, Stanforth, Stephen, Tait, Emma   +4 more
core   +1 more source

Volatile Compound Fingerprints of Black Cumin (Nigella sativa L.) Seed Oil Extracted by Supercritical Carbon Dioxide

Biology and Life Sciences Forum, 2021
Black cumin (Nigella sativa L.) seed oil consists of many volatile oils dissolved in the fixed oil. In this work, the seed oil samples were obtained from supercritical CO2 (SCCO2) extraction under various pressures (20.0–30.0 MPa) and temperatures (40–60
Winatta Sakdasri, Buntita Sakulkittiyut, Somkiat Ngamprasertsith, Ruengwit Sawangkeaw   +3 more
doaj   +1 more source

Determination of dimethyl selenide and dimethyl sulphide compounds causing off-flavours in bottled mineral waters [PDF]

, 2016
Sales of bottled drinking water have shown a large growth during the last two decades due to the general belief that this kind of water is healthier, its flavour is better and its consumption risk is lower than that of tap water.
Caixach Gamisans, Josep, Cortina, Montserrat, Guadayol Cunill, José María, Guadayol Gallego, Marta   +3 more
core   +2 more sources

Detection of volatile organic compounds (VOCs) using an optical fibre long period grating with a calixarene anchored mesoporous thin film [PDF]

, 2013
A long period grating (LPG) modified with a mesoporous film infused with a functional compound, calix[4]arene, was employed for the detection of volatile organic compounds (VOCs). The mesoporous film consisted of an inorganic part, of SiO2 nanoparticles (
Davis, Frank, Higson, Seamus P. J., James, Stephen W., Korposh, Sergiy, Lee, Seung-Woo, Tatam, Ralph P., Wang, T.   +6 more
core   +1 more source

Sonochemical Degradation of Perfluorooctane Sulfonate (PFOS) and Perfluorooctanoate (PFOA) in Landfill Groundwater: Environmental Matrix Effects [PDF]

, 2008
Perfluorinated chemicals such as perfluorooctane sulfonate (PFOS) and perfluorooctanoic acid (PFOA) are environmentally persistent and recalcitrant to most conventional chemical and microbial treatment technologies.
Cheng, Jie, Hoffmann, Michael R., Mader, Brian T., Park, Hyunwoong, Vecitis, Chad D.   +4 more
core   +3 more sources

Total Observed Organic Carbon (TOOC): A synthesis of North American observations [PDF]

, 2007
Measurements of organic carbon compounds in both the gas and particle phases measured upwind, over and downwind of North America are synthesized to examine the total observed organic carbon (TOOC) over this region.
Aiken, A. C., Allan, J. D., Apel, E., Atlas, E. L., Baker, A. K., Bates, T. S., Beyersdorf, A. J., Blake, D. R., Campos, T., Coe, H., Crounse, J. D., de Gouw, J. A., DeCarlo, P. F., Dunlea, E. J., Flocke, F. M., Fried, A., Goldan, P., Goldstein, A. H., Griffin, R. J., Heald, C. L., Herndon, S. C., Holloway, J. S., Holzinger, R., Jimenez, J. L., Junkermann, W., Kuster, W. C., Lewis, A. C., Meinardi, S., Millet, D. B., Onasch, T., Polidori, A., Quinn, P. K., Riemer, D. D., Roberts, J. M., Salcedo, D., Sive, B., Swanson, A. L., Talbot, R., Warneke, C., Weber, R. J., Weibring, P., Wennberg, P. O., Wittig, A. E., Worsnop, D. R., Zhang, R., Zheng, J., Zheng, W.   +46 more
core   +7 more sources

Nanostructured Polypyrrole-Based Ammonia and Volatile Organic Compound Sensors

Sensors, 2017
The aim of this review is to summarize the recent progress in the fabrication of efficient nanostructured polymer-based sensors with special focus on polypyrrole.
Milena Šetka, Jana Drbohlavová, Jaromír Hubálek   +2 more
doaj   +1 more source

Effect of Supplementation of Flour with Fruit Fiber on the Volatile Compound Profile in Bread

Sensors, 2021
This paper presents the analyses of the effect of fiber additives on volatile organic compounds in bread. The bread was baked from wheat flour with the addition of 3% of fruit fiber, following common procedures.
Robert Rusinek, Marzena Gawrysiak-Witulska, Aleksander Siger, Anna Oniszczuk, Aneta A. Ptaszyńska, Jarosław Knaga, Urszula Malaga-Toboła, Marek Gancarz   +7 more
doaj   +1 more source