Article
Environmental Sciences
Jinli Xu, Huifan Deng, Yiqun Wang, Pan Li, Jianqiang Zeng, Hongwei Pang, Xin Xu, Xue Li, Yan Yang, Sasho Gligorovski
Summary: Human daily activities such as cooking and cleaning can affect indoor air quality by emitting volatile organic compounds (VOCs) and forming secondary compounds through reactions with ozone (O3) and hydroxyl radicals (OH). However, our understanding of the formation processes of secondary VOCs is still limited. In this study, we measured the primary VOCs emitted by a commercial floor-cleaning detergent and the secondary compounds formed by the reaction of O3 with the detergent using high-resolution mass spectrometry. We also developed reaction mechanisms to describe the formation of these secondary VOCs.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Environmental Sciences
Gennadiy Onishchenko, Natalia Nikolayeva, Valery Rakitskii, Alexandra Ilnitskaya, Andrey Filin, Aleksei Korolev, Elena Nikitenko, Elena Denisova, Andreas Tsakalof, Ekaterina Guseva, Sergey Kuzmin, Aristidis Tsatsakis
Summary: This study evaluated the health effects of combined or separate exposure to hazardous factors in plasma technology occupational environment on animal models. The results showed that exposure to noise or its combination with chemical factors led to non-specific changes in the CNS, especially in the case of joint exposure.
ENVIRONMENTAL RESEARCH
(2023)
Article
Chemistry, Multidisciplinary
Kseniia Titenkova, Alexander D. Shuvaev, Fedor E. Teslenko, Egor S. Zhilin, Leonid L. Fershtat
Summary: Electrochemical synthesis is being used to create new strategies for the assembly of complex organic molecules. However, forming N-N bonds electrochemically is still challenging due to the electronegativity of nitrogen and side reactions. In this study, a green electrochemical approach was presented to selectively form N-N bonds using oximinohydrazones. The resulting 1,2,3-triazole 1-oxides possess thermally stability and show promise for the development of functional organic materials and pharmaceutical ingredients.
Article
Chemistry, Multidisciplinary
Chenyue Sun, Luming Yang, Manuel A. Ortuno, Ashley M. Wright, Tianyang Chen, Ashley R. Head, Nuria Lopez, Mircea Dinca
Summary: This study investigates the gas-solid reaction of nitric oxide with the metal-organic framework Cu-I-ZrTpmC* and identifies an unusual chelating N2O2.- intermediate using in situ spectroscopies and density functional theory simulations. The results highlight the advantage of site-isolation in metal-organic frameworks (MOFs) for studying important reaction intermediates and provide a mechanistic scenario compatible with the proposed one-electron couple in these enzymes.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Multidisciplinary
Stephan P. Blum, Christean Nickel, Lukas Schaffer, Tarik Karakaya, Siegfried R. Waldvogel
Summary: This study demonstrates the electrochemical aromatic nitration using NBu4NO2 as the nitro source, with 1,1,1-3,3,3-hexafluoroisopropan-2-ol (HFIP) in MeCN significantly increasing the yield by solvent control. The reaction is scalable and shows yields of up to 88%.
Article
Engineering, Environmental
Liubin Huang, Elianna S. Frank, Mona Shrestha, Saleh Riahi, Douglas J. Tobias, Vicki H. Grassian
Summary: Oxygenated organic compounds (OOCs) are widely present in indoor environments and their adsorption on indoor surfaces, driven by pi hydrogen bonding and O-H hydrogen bonding interactions, plays a significant role in the removal of OOCs. Indoor surfaces can also act as a reservoir of OOCs due to their slower desorption kinetics compared to other indoor relevant organic compounds.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2021)
Article
Engineering, Chemical
Kaijie Liu, Jingwei Li, Qingbo Yu, Xinyu Han, Mengyao Bian, Yibo Zhang, Ting Yi
Summary: A new ultra-low temperature SCR technology scheme is adopted to directly utilize the amino -NH2 in urea to remove NOx at 50-100 degrees C, saving energy consumption and achieving efficient removal of NOx.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Engineering, Environmental
Ying Hu, Bin Zhao
Summary: Ambient PM2.5 and NO2 pollution in China contribute to a significant health burden and indoor smoking and cooking are major sources of PM2.5 and NO2 pollution. Indoor sources contribute strongly to total PM2.5 and NO2 exposure in urban China and are comparable to outdoor sources.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Review
Construction & Building Technology
Chenqiu Du, Baizhan Li, Wei Yu
Summary: Household mould growth is favored by warm temperature and high humidity, releasing spores and causing allergic responses. Building energy efficient designs may increase mould growth risks and require further research for regulation and control.
JOURNAL OF BUILDING ENGINEERING
(2021)
Article
Chemistry, Multidisciplinary
Yelu Shi, Matthew A. Michael, Yong Zhang
Summary: This work elucidates the basic mechanism of the nonheme enzyme-mediated conversion of HNO to NO, resolving longstanding debates on reversibility and uncovering the reasons for the irreversible nature of this conversion. The study also identifies the first thermodynamically favorable and kinetically feasible mechanism for the experimental reverse reaction, providing insights that will aid in further related studies and the development of HNO probes.
CHEMISTRY-A EUROPEAN JOURNAL
(2021)
Review
Environmental Sciences
M. Dewika, Kalaimani Markandan, N. Ahmad Irfan, Muhammad Amirul Aizat Mohd Abdah, J. Nor Ruwaida, Y. Y. Sara, Mohammad Khalid
Summary: The global concern over microplastics pollution has increased in the past decade. People spend most of their time indoors, leading to higher exposure to microplastic contamination from sources such as settled dust, air, drinking water, and food. Although research on indoor microplastics has grown, comprehensive reviews on this topic are still limited. This review analyzes the occurrence, distribution, human exposure, potential health impact, and mitigation strategies of microplastics in the indoor air environment. It emphasizes the risks associated with finer microplastics that can enter the circulatory system and other organs, highlighting the need for further research to develop effective strategies for reducing exposure risks. Overall, our findings suggest that indoor microplastics pose potential risks to human health, and more efforts should be made to mitigate exposure.
Article
Chemistry, Inorganic & Nuclear
Sebastien De Windt, Jeremie Auvergniot, Pierre-Etienne Cabelguen, Fabienne Gschwind, Marc Dubois, Katia Guerin
Summary: Due to their high initial electrochemical properties and wide compositional flexibility, lithium-rich disordered rocksalt cathode-active materials, especially high-performance manganese-only materials, have the potential to replace the current market leader NMC material based on cobalt. The lack of stability is the main issue with these materials. However, recent research has found bulk fluorination as a possible solution to stabilize these compounds. The study demonstrates several synthesis strategies and a tailored characterization methodology to explore the chemical space of direct fluorination of manganese oxide MnO and successfully synthesizes a range of novel, safe, and finely tunable manganese oxyfluorides.
INORGANIC CHEMISTRY
(2023)
Review
Chemistry, Analytical
Hassan Khalid Ageel, Stuart Harrad, Mohamed Abou-Elwafa Abdallah
Summary: Microplastics (MPs) have attracted increasing attention due to their ubiquitous presence in the environment, with limited research on human exposure indoors. Studies have shown higher concentrations of MPs in indoor air and dust, raising concerns about potential health risks through inhalation, ingestion, and dermal contact. More research is needed to understand the full extent of human exposure and develop regulations to protect health and the environment.
ENVIRONMENTAL SCIENCE-PROCESSES & IMPACTS
(2022)
Article
Environmental Sciences
Kimberly L. Parra, Gene E. Alexander, David A. Raichlen, Yann C. Klimentidis, Melissa A. Furlong
Summary: The study found that air pollutants PM2.5 and NO2 were associated with multiple types of dementia, while the APOE-epsilon 4 genotype did not modify these associations.
ENVIRONMENTAL RESEARCH
(2022)
Article
Engineering, Environmental
Chen Wang, James M. Mattila, Delphine K. Farmer, Caleb Arata, Allen H. Goldstein, Jonathan P. D. Abbatt
Summary: During the HOMEChem campaign, it was found that cooking and bleach cleaning in homes are the major sources of nitrogen-containing gases. Gas oven cooking emits more isocyanic acid than stovetop cooking. The emission ratios of HNCO/CO during cooking are lower than those during biomass burning and cigarette smoking. Bleach cleaning increases the mixing ratio of HNCO. HNCO is present in indoor surface reservoirs in a temperature-dependent manner.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Construction & Building Technology
Wanyu R. Chan, Xiwang Li, Brett C. Singer, Theresa Pistochini, David Vernon, Sarah Outcault, Angela Sanguinetti, Mark Modera
BUILDING AND ENVIRONMENT
(2020)
Article
Construction & Building Technology
Hao Tang, Yong Ding, Brett Singer
BUILDING AND ENVIRONMENT
(2020)
Article
Construction & Building Technology
Zhiqiang Wang, William W. Delp, Brett C. Singer
BUILDING AND ENVIRONMENT
(2020)
Article
Construction & Building Technology
Brett C. Singer, Wanyu R. Chan, Yang-Seon Kim, Francis J. Offermann, Iain S. Walker
Article
Construction & Building Technology
Xiaochen Tang, Sebastien Houze de L'Aulnoit, Mark T. Buelow, Jonathan Slack, Brett C. Singer, Hugo Destaillats
Review
Construction & Building Technology
William J. Fisk, Brett C. Singer, Wanyu R. Chan
BUILDING AND ENVIRONMENT
(2020)
Article
Chemistry, Analytical
William W. Delp, Brett C. Singer
Article
Construction & Building Technology
Hao Tang, Yong Ding, Brett C. Singer
JOURNAL OF BUILDING ENGINEERING
(2020)
Editorial Material
Construction & Building Technology
Hugo Destaillats, Brett Singer, Tunga Salthammer
Article
Construction & Building Technology
Haoran Zhao, Wanyu R. Chan, Sebastian Cohn, William W. Delp, Iain S. Walker, Brett C. Singer
Summary: This study investigated pollutant concentrations and performance of mechanical ventilation equipment in 23 low-income apartments, finding that some apartments did not meet ventilation requirements, resulting in higher indoor pollutant concentrations.
Article
Construction & Building Technology
Ingrid Demanega, Igor Mujan, Brett C. Singer, Aleksandar S. Andelkovic, Francesco Babich, Dusan Licina
Summary: The study evaluated the performance of consumer grade monitors and sensors in detecting indoor air pollutants, finding that most devices underreported particulate matter levels, had acceptable responses for carbon dioxide, and diverging results for volatile organic compounds. However, despite the quantitative disparities, the devices were still deemed suitable for indoor air quality management.
BUILDING AND ENVIRONMENT
(2021)
Correction
Construction & Building Technology
Hao Tang, Yong Ding, Brett Singer
BUILDING AND ENVIRONMENT
(2021)
Article
Construction & Building Technology
Brett C. Singer, Haoran Zhao, Chelsea Preble, William W. Delp, Jovan Pantelic, Michael D. Sohn, Thomas W. Kirchstetter
Summary: Tracer gas experiments were conducted to study the dispersion of contaminants from simulated speaking in physically distanced meeting and classroom configurations. Results showed that chilled or neutral supply air provided good mixing, while thermal stratification during heating led to higher exposure variations. Operating two within-zone air cleaners together vertically in the room helped mitigate elevated exposure variations.
Review
Construction & Building Technology
P. Jacob Bueno de Mesquita, William W. Delp, Wanyu R. Chan, William P. Bahnfleth, Brett C. Singer
Summary: Research suggests that indoor environmental controls, such as the use of masks, administrative controls, and engineering controls, can help reduce the transmission of the SARS-CoV-2 virus. However, the actual effectiveness and applicability of these controls require further study and evaluation to support widespread implementation.
Article
Construction & Building Technology
Hao Tang, Yong Ding, Xue Liu, Brett C. Singer
Summary: Previous research on indoor environmental quality (IEQ) parameters has mainly focused on respondents who were uninformed about the test conditions, thus leading to limited understanding of the impact of information on perception. This experimental study found that accurate information on parameter values influenced the perception of indoor air quality (IAQ), while qualitative ratings affected perceptions of all four environmental factors. However, improved sensation and satisfaction were often not as good as when the environmental conditions were actually improved and accurate information was provided.
JOURNAL OF BUILDING ENGINEERING
(2022)