scholarly journals Volatile Organic Compounds (VOCs) in Conventional and High Performance School Buildings in the U.S.

2017 ◽  
Vol 14 (1) ◽  
pp. 100 ◽  
Author(s):  
Lexuan Zhong ◽  
Feng-Chiao Su ◽  
Stuart Batterman
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
High Performance ◽  
School Buildings ◽  
Volatile Organic ◽  
The U.S

Hollow spheres of CoCr2O4–Cr2O3 mixed oxides with nanoscale heterojunctions for exclusive detection of indoor xylene

2018 ◽  
Vol 6 (40) ◽  
pp. 10767-10774 ◽  
Author(s):  
Bo-Young Kim ◽  
Ji-Won Yoon ◽  
Kyeorei Lim ◽  
Sung Hyun Park ◽  
Ji-Wook Yoon ◽  
...  
Keyword(s):  
Air Quality ◽  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
High Performance ◽  
Catalytic Effect ◽  
Mixed Oxides ◽  
Hollow Spheres ◽  
Volatile Organic ◽  
Ppm Level

Ultrahigh selectivity and response to sub-ppm-level of p-xylene was achieved using CoCr2O4–Cr2O3 spheres. The unique catalytic effect and nanoscale heterojunction of CoCr2O4 and Cr2O3 provide a strategy to design high performance volatile organic compounds sensors for monitoring air quality.

scholarly journals Occupational Exposure to Volatile Organic Compounds and Aldehydes in the U.S. Trucking Industry

2007 ◽  
Vol 41 (20) ◽  
pp. 7152-7158 ◽  
Author(s):  
M. E. Davis ◽  
A. P. Blicharz ◽  
J. E. Hart ◽  
F. Laden ◽  
E. Garshick ◽  
...  
Keyword(s):  
Occupational Exposure ◽  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Trucking Industry ◽  
Volatile Organic ◽  
The U.S

scholarly journals Synthesis of polyurethanes with low volatile organic compounds content for upholstery and automotive articles

2020 ◽  
Author(s):  
Anna Bacardit ◽  
Silvia Sorolla ◽  
Concepcio Casas ◽  
Lluis Olle ◽  
Mireia Conde
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
High Performance ◽  
Color Change ◽  
Research Work ◽  
Pilot Scale ◽  
Long Term Effects ◽  
Minimal Impact ◽  
Volatile Organic ◽  
Pilot Scale Reactor

The manufacture of upholstery and automotive articles is linked to the release of Volatile Organic Compounds (hereinafter VOCs) during their manufacture, which have short and long-term effects on the health of users and the environment. In the leather sector, around 40 kg of VOCs are generated per 1000 kg of raw skin. This research work has focused on the synthesis of new and more sustainable urethane-based polymers that, in turn, allow the quality requirements of the finish to be met, which vary depending on the leather article manufactured. The main objective of the study is to minimize the content of VOCs in the different aliphatic polyurethanes synthesized in a pilot-scale reactor, making small modifications to the synthesis formulations. The synthesis route developed is based on the preparation of polymers of ionomeric polyurethanes and their subsequent dispersion in water. In the synthesis processes developed, the content of coalescing solvents and neutralizing agents, which directly contribute to the concentration of VOCs of the urethane polymers, is eliminated and / or minimized as much as possible. The new urethane-based polymers obtained have been analyzed according to the parameters of pH, viscosity, density and percentage of solids in the resin. Likewise, organoleptic tests (color, transparency, hardness, touch and tacking) and physical tests (tensile strength, water absorption, hardness and color change at 100°C for 24 hours) have been carried out on the film corresponding to each synthesized polyurethane resin. These products will be introduced in finishing formulations designed to obtain high-performance upholstery and automotive leather with minimal impact in terms of VOC content at the pilot level. Tests of fastness and physical resistance have been carried out to evaluate the performance of these leathers.

scholarly journals Development of Ozone Reactivity Scales for Volatile Organic Compounds in a Chinese Megacity

2021 ◽  
Author(s):  
Yingnan Zhang ◽  
Likun Xue ◽  
William P. L. Carter ◽  
Chenglei Pei ◽  
Tianshu Chen ◽  
...  
Keyword(s):  
Air Pollution ◽  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Environmental Conditions ◽  
Strong Dependence ◽  
Chemical Mechanism ◽  
Emission Data ◽  
Similar Chemical ◽  
Volatile Organic ◽  
The U.S

Abstract. We developed incremental reactivity (IR) scales for 116 volatile organic compounds (VOCs) in a Chinese megacity (Guangzhou) and elucidated their application in calculating the ozone (O3) formation potential (OFP) in China. Two sets of model inputs (emission-based and observation-based) were designed to localize the IR scales in Guangzhou using the Master Chemical Mechanism (MCM) box model, and were also compared with those of the U.S. The two inputs differed in how primary pollutant inputs in the model were derived, with one based on emission data and the other based on observed pollutant levels, but the maximum incremental reactivity (MIR) scales derived from them were fairly similar. The IR scales showed a strong dependence on the chemical mechanism (MCM vs. Statewide Air Pollution Research Center), but the discrepancy between China and the U.S. using a similar chemical mechanism was not large. With a given chemical mechanism, the MIR scale for most VOCs showed a relatively small dependence on environmental conditions. However, when the NOx availability decreased, the IR scales became more sensitive to environmental conditions and the discrepancy between the IR scales obtained from emission-based and observation-based inputs increased, thereby implying the necessity to localize IR scales over mixed-limited or NOx-limited areas. This study provides recommendations for the application of IR scales, which has great significance for VOC control in China and other countries suffering from serious O3 air pollution.

scholarly journals Identifying Sources of Volatile Organic Compounds and Aldehydes in a High Performance Building

2010 ◽  
Author(s):  
Anna C. Ortiz ◽  
Marion Russell ◽  
Wen-Yee Lee ◽  
Michael Apte ◽  
Randy Maddalena
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
High Performance ◽  
Volatile Organic ◽  
High Performance Building

scholarly journals Study on mesoporous catalysts for oxidation of volatile organic compounds

2022 ◽  
Vol 355 ◽  
pp. 01030
Author(s):  
Xianqiang Ran
Keyword(s):  
Volatile Organic Compounds ◽  
Catalytic Oxidation ◽  
Organic Compounds ◽  
High Performance ◽  
Oxidation Process ◽  
Dominant Role ◽  
Active Components ◽  
Mesoporous Catalysts ◽  
Volatile Organic ◽  
Noble Metal Oxides

Volatile organic compounds (VOCs) emitted from many industrial processes, are harmful to human health and the atmsphere. Several technologies are currently used to eliminate VOCs from the environment. Among them, catalytic oxidation has been recognized as one of the most efficient and promising ways to treatment VOCs. So high performance oxidants play an dominant role in the catalytic oxidation process. In this work, we discussed many researchers’ works about preparation and effect of their catalysts, kinds of mesoporous catalysts for eliminating VOCs were reviewed, the active components of the catalysts are noble and non-noble metal oxides, which loaded in the mesochannels of mesoporous materials including silica, titania and aluminia.

scholarly journals Detection of volatile organic compounds: From chemical gas sensors to terahertz spectroscopy

2021 ◽  
Vol 40 (1) ◽  
pp. 33-57
Author(s):  
Vardan Galstyan ◽  
Annalisa D’Arco ◽  
Marta Di Fabrizio ◽  
Nicola Poli ◽  
Stefano Lupi ◽  
...  
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Gas Sensors ◽  
High Performance ◽  
Gas Sensing ◽  
Terahertz Spectroscopy ◽  
Monitoring Systems ◽  
Exhaled Breath ◽  
Volatile Organic ◽  
Chemiresistive Gas Sensors

Abstract Volatile organic compounds are released by different sources causing air pollution. Moreover, some of these carbon-based organic chemicals are considered as biomarkers in the exhaled breath of individuals and can be used to identify various kinds of diseases. Hence, the increasing demand to control air quality and human health has promoted the development of monitoring systems based on high-performance gas sensing structures. This review highlights the achievements in sensing technologies for the detection of volatile organic compounds. Particularly, chemiresistive gas sensors and detection systems based on the terahertz spectroscopy method are outlined. The progress in research studies is discussed and the potential of both techniques is evaluated considering the current challenges. Afterward, a brief summary is also provided along with the advances and issues for future investigations and the manufacturing of highly sensitive and selective monitoring systems.

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