Article
Engineering, Environmental
Cui Li, Lili Yang, Jiajia Wu, Yujue Yang, Yingming Li, Qinghua Zhang, Yuxiang Sun, Da Li, Miwei Shi, Guorui Liu
Summary: Emissions from the incineration of solid waste contain previously unrecognized chemical compounds that pose a global public health concern. Assessing the toxicity and activity of these compounds can provide valuable information for regulating and controlling the emissions from waste incineration.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Engineering, Environmental
Cui Li, Minghui Zheng, Dong Cao, Lili Yang, Jiajia Wu, Yuanping Yang, Guorui Liu
Summary: This study used high resolution mass spectrometry to investigate the molecular characterization and mechanisms of organic pollutants formed by metallurgical industrial emissions, revealing major chemical classes and formation mechanisms, confirming the contribution of metallurgical industrial emissions to air pollution.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Plant Sciences
Heng-An Lin, Harrison R. Coker, Julie A. Howe, Malak M. Tfaily, Elek M. Nagy, Sanjay Antony-Babu, Steve Hague, A. Peyton Smith
Summary: Drought-induced root exudates in cotton were analyzed using FT-ICR MS to identify over 700 unique metabolites. Pathways and modules associated with the biosynthesis of various secondary metabolites, such as flavonoids and plant hormones, were highly induced under severe drought. The potential biochemical transformations, including methylation and oxidation/hydroxylation, were also identified.
FRONTIERS IN PLANT SCIENCE
(2023)
Article
Energy & Fuels
Jianxun Wu, Chao Ma, Weilai Zhang, Weifeng Chang, Yahe Zhang, Quan Shi
Summary: In this study, molecular characterization of sulfur compounds in a whole crude oil was conducted using gas chromatography and mass spectrometry techniques. The crude oil was separated into different fractions and different sulfur compounds were identified and characterized. The study found that the type and content of sulfur compounds vary significantly among the different distillation fractions.
Article
Agricultural Engineering
Yiwei Zhou, Farhat Abbas, Jingjuan He, Fulong Yan, Qin Wang, Yunyi Yu, Rangcai Yu, Yanping Fan
Summary: Floral scent profiles are crucial for the ornamental value of cut flowers. Understanding the floral scent characteristics is important for assessing flower quality and genetic improvement. This study used two mass spectrometric methodologies to explore the volatile complex diversity of Hedychium hybrid cut flowers.
INDUSTRIAL CROPS AND PRODUCTS
(2022)
Article
Microbiology
Anusha Telagathoti, Maraike Probst, Iuliia Khomenko, Franco Biasioli, Ursula Peintner
Summary: In this study, a large-scale VOC analysis was conducted on 13 species of Mortierella sensu lato, showing that these species produce a variety of VOCs that can be used for differentiation. The volatilomes were found to be partially phylogenetically conserved, potentially impacting the distribution of Mortierella species globally.
Article
Chemistry, Applied
Yonghong Zhu, Huaan Zheng, Feng Tian, Yijie Wang, Chuanfeng Huang, Yong Dan, Tao Yang, Ning Du, Qiucheng Zhou, Dong Li
Summary: The study utilized GC x GC-TOF MS and ESI FT-ICR MS with CID to analyze the nitrogen compounds in MLCT. It found that the new separation subfraction method combined with high resolution mass spectrometry efficiently detected the molecular characteristics of each fraction. The research revealed the presence of 80 nitrogen compounds in MLCT, with dominant quinolines, carbazoles and pyridines, and identified island and archipelago structural motifs coexisting in MLCT.
FUEL PROCESSING TECHNOLOGY
(2022)
Article
Energy & Fuels
Jianxun Wu, Weilai Zhang, Yuanfeng Wang, Yahe Zhang, Quan Shi
Summary: A series of novel carotenoid-derived non-thiadiamondoids cage organic sulfur compounds (OSCs) were identified from crude oil. Non-polar sulfur compounds were isolated using the methylation/demethylation method and characterized using FT-ICR MS and GC-MS. The cage OSCs were tentatively identified as 2-thiatricyclo[4.4.0.0<3.8>]decanes. These novel OSCs were found to be generated by biological sulfate reduction, providing new clues for the preservation of hydrocarbons in geological environments through sulfurization. The cage OSCs have the potential to be biomarkers for studying sedimentary environments.
Article
Multidisciplinary Sciences
Amal A. Maamoun, Radwa H. El-akkad, Mohamed A. Farag
Summary: The study compared the metabolite profiles of young fruit and mature fruit of Luffa aegyptiaca, revealing significant differences in chemical composition. Young fruit was found to be enriched in metabolites, while mature fruit predominated in fatty acids. Additionally, several oleanene triterpene glycosides were more abundant in young fruit.
JOURNAL OF ADVANCED RESEARCH
(2021)
Article
Biotechnology & Applied Microbiology
Rebecca Roberts, Iuliia Khomenko, Graham T. Eyres, Phil Bremer, Patrick Silcock, Emanuela Betta, Franco Biasioli
Summary: Hop-derived volatile organic compounds (VOCs) and their transformation products have a significant impact on the flavor and aroma of beer. This study investigated the biotransformation of geraniol, a key hop monoterpene alcohol, by different yeast species and strains during fermentation. The evolution of geraniol and its transformation products were monitored throughout fermentation using SPME-GC/MS and PTR-ToF-MS. Different yeast strains showed variations in the concentration and formation behavior of the transformation products. This research provides insights into the biotransformation of hop terpenes by yeast and its implications for beer aroma optimization.
FERMENTATION-BASEL
(2023)
Article
Engineering, Environmental
Dennys Leyva, Muhammad Usman Tariq, Rudolf Jaffe, Fahad Saeed, Francisco Fernandez-Lima
Summary: Dissolved Organic Matter (DOM) is a significant component of the global carbon cycle. This study used high-resolution mobility and ultrahigh-resolution Fourier transform ion cyclotron resonance tandem mass spectrometry (FT-ICR MS/MS) to compare four solid phase extracted (SPE) DOM samples from three freshwater ecosystems. Comparison of structural families revealed dissimilarities in the structural footprint of the samples. Inclusion of isomeric content in the structural family description suggested additional transformation pathways and/or source variations.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Agriculture, Multidisciplinary
Leopold Weidner, Jil Vittoria Cannas, Michael Rychlik, Philippe Schmitt-Kopplin
Summary: The emissions released during thermal processing of food provide important information for understanding food composition and controlling cooking processes.
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
(2023)
Article
Biotechnology & Applied Microbiology
Darian N. Smercina, Young-Mo Kim, Mary S. Lipton, Dusan Velickovic, Kirsten S. Hofmockel
Summary: Free-living nitrogen-fixing bacteria significantly contribute to terrestrial nitrogen availability, but the forms of nitrogen they contribute are not well understood. Studying soil microorganisms in situ poses challenges due to differences in scale and complexities of the soil system. Our study focused on microorganisms and microbial-scale processes to better understand the nitrogen sources and process rates of nitrogen fixation. We characterized the production of nitrogen-containing metabolites by two common soil bacteria under different growth conditions and found that nitrogen contributions from nitrogen fixation occur in multiple forms. Our findings also highlight the influence of environmental structure and sampling scale on microbial activity. Quantifying microbial-scale processes is crucial for upscaling ecosystem function.
APPLIED AND ENVIRONMENTAL MICROBIOLOGY
(2022)
Article
Energy & Fuels
Felipe Campuzano, Abdul Gani Abdul Jameel, Wen Zhang, Abdul-Hamid Emwas, Andres F. Agudelo, Juan Daniel Martinez, S. Mani Sarathy
Summary: The study focused on distillation fractionation of tire pyrolysis oil (TPO) to obtain different fractions and explore their structural characteristics, with the use of advanced analytical techniques.
Article
Food Science & Technology
Chenguang Zhou, Yaojie Zhou, Yuqian Hu, Bin Li, Roujia Zhang, Kaiyi Zheng, Jie Liu, Jing Wang, Min Zuo, Siyao Liu
Summary: The study found that germinated brown rice (GBR) from Japonica rice cultivars contained higher levels of health-promoting compounds compared to Indica rice cultivars. No clear differences in volatile profiles were observed between the subspecies, but all volatile organic compounds exhibited significant reductions after germination, suggesting that Japonica cultivars might be preferred for health-conscious consumers seeking GBR products.
Article
Operations Research & Management Science
Zhongwei Chen, Zhi-Ping Fan
Summary: This study investigates the impact of cost information misreporting on the driving range level in a two-stage supply chain consisting of a battery supplier and an electric vehicle manufacturer. It also explores the optimal improvement strategy for the battery supplier when the subsidy threshold increases. The research findings suggest that the subsidy threshold plays a significant role in determining the driving range level, and participants may have different preference for the improvement strategy under certain conditions.
ANNALS OF OPERATIONS RESEARCH
(2023)
Article
Engineering, Environmental
Linnea K. Honeker, Gina A. Hildebrand, Jane D. Fudyma, L. Erik Daber, David Hoyt, Sarah E. Flowers, Juliana Gil-Loaiza, Angelika Kuebert, Ines Bamberger, Christopher R. Anderton, John Cliff, Sarah Leichty, Roya AminiTabrizi, Juergen Kreuzwieser, Lingling Shi, Xuejuan Bai, Dusan Velickovic, Michaela A. Dippold, S. Nemiah Ladd, Christiane Werner, Laura K. Meredith, Malak M. Tfaily
Summary: This study examined the effects of drought on root metabolic profiles and carbon allocation pathways of three tropical rainforest species. The results showed that drought had species-specific impacts on metabolic profiles and spatial distribution in different plants. The presence of microbial also influenced root metabolic pathways.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Review
Biochemistry & Molecular Biology
Laura K. Meredith, Malak M. Tfaily
Summary: Microbial metabolomic studies have focused mainly on nonvolatile metabolites, neglecting the volatile organic compounds (VOCs) that play important roles in microbial systems. Advances in VOC detection allow real-time observation and overcome sampling limitations, leading to a more comprehensive understanding of microbial processes when integrating VOC and other 'omics approaches.
TRENDS IN MICROBIOLOGY
(2022)
Article
Engineering, Environmental
Jiali Shen, Wiebke Scholz, Xu-Cheng He, Putian Zhou, Guillaume Marie, Mingyi Wang, Ruby Marten, Mihnea Surdu, Birte Rorup, Rima Baalbaki, Antonio Amorim, Farnoush Ataei, David M. Bell, Barbara Bertozzi, Zoe Brasseur, Lucia Caudillo, Dexian Chen, Biwu Chu, Lubna Dada, Jonathan Duplissy, Henning Finkenzeller, Manuel Granzin, Roberto Guida, Martin Heinritzi, Victoria Hofbauer, Siddharth Iyer, Deniz Kemppainen, Weimeng Kong, Jordan E. Krechmer, Andreas Kuerten, Houssni Lamkaddam, Chuan Ping Lee, Brandon Lopez, Naser G. A. Mahfouz, Hanna E. Manninen, Dario Massabo, Roy L. Mauldin, Bernhard Mentler, Tatjana Mueller, Joschka Pfeifer, Maxim Philippov, Ana A. Piedehierro, Pontus Roldin, Siegfried Schobesberger, Mario Simon, Dominik Stolzenburg, Yee Jun Tham, Antonio Tome, Nsikanabasi Silas Umo, Dongyu Wang, Yonghong Wang, Stefan K. Weber, Andre Welti, Robin Wollesen de Jonge, Yusheng Wu, Marcel Zauner-Wieczorek, Felix Zust, Urs Baltensperger, Joachim Curtius, Richard C. Flagan, Armin Hansel, Ottmar Moehler, Tuukka Petaja, Rainer Volkamer, Markku Kulmala, Katrianne Lehtipalo, Matti Rissanen, Jasper Kirkby, Imad El-Haddad, Federico Bianchi, Mikko Sipila, Neil M. Donahue, Douglas R. Worsnop
Summary: This study demonstrates that gas-phase MSA production increases with decreasing temperature and the updated DMS oxidation mechanism reveals higher MSA yields than previously predicted. The impact of NOx is found to be less significant compared to temperature.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Chemistry, Physical
Douglas A. Day, Juliane L. Fry, Hyun Gu Kang, Jordan E. Krechmer, Benjamin R. Ayres, Natalie Keehan, Samantha L. Thompson, Weiwei Hu, Pedro Campuzano-Jost, Jason C. Schroder, Harald Stark, Marla P. DeVault, Paul J. Ziemann, Kyle J. Zarzana, Robert J. Wild, William P. Dube, Steven S. Brown, Jose L. Jimenez
Summary: Dark chamber experiments were conducted to study the formation of SOA from the oxidation of alpha-pinene and Delta-carene. The results showed that the SOA mass yields were strongly dependent on available OA mass and absorptive partitioning to OA. There was a marked difference in SOA yield between the two precursors, suggesting that the chemical mechanism needs to distinguish among different monoterpenes in order to accurately model SOA production in forested regions.
JOURNAL OF PHYSICAL CHEMISTRY A
(2022)
Article
Plant Sciences
Angelika Kuebert, Maren Dubbert, Ines Bamberger, Kathrin Kuehnhammer, Matthias Beyer, Joost van Haren, Kinzie Bailey, Jia Hu, Laura K. Meredith, S. Nemiah Ladd, Christiane Werner
Summary: The isotopic composition of xylem water (delta(X)) can be estimated using the isotopic composition of transpired water (delta(T)). In a rainforest experiment, the transpiration-derived isotopic values were found to be closely related to the source water values. This suggests that the in-situ transpiration method is a useful tool for studying rapid dynamics in plant water uptake and use.
PLANT CELL AND ENVIRONMENT
(2023)
Article
Multidisciplinary Sciences
Glenn Morrison, Azin Eftekhari, Aixing Fan, Francesca Majluf, Jordan E. Krechmer
Summary: Personal care products can reduce the impact of ozone on the skin, but it hasn't been proven that they can mitigate the effects of air pollution on skin health.
Article
Engineering, Environmental
Mihnea Surdu, Houssni Lamkaddam, Dongyu S. Wang, David M. Bell, Mao Xiao, Chuan Ping Lee, Dandan Li, Lucia Caudillo, Guillaume Marie, Wiebke Scholz, Mingyi Wang, Brandon Lopez, Ana A. . Piedehierro, Farnoush Ataei, Rima Baalbaki, Barbara Bertozzi, Pia Bogert, Zoe Brasseur, Lubna Dada, Jonathan Duplissy, Henning Finkenzeller, Xu-Cheng He, Kristina Hohler, Kimmo Korhonen, Jordan E. Krechmer, Katrianne Lehtipalo, Naser G. A. . Mahfouz, Hanna E. Manninen, Ruby Marten, Dario Massabo, Roy Mauldin, Tuukka Petaja, Joschka Pfeifer, Maxim Philippov, Birte Rorup, Mario Simon, Jiali Shen, Nsikanabasi Silas Umo, Franziska Vogel, Stefan K. . Weber, Marcel Zauner-Wieczorek, Rainer Volkamer, Harald Saathoff, Ottmar Moehler, Jasper Kirkby, Douglas R. Worsnop, Markku Kulmala, Frank Stratmann, Armin Hansel, Joachim Curtius, Andre Welti, Matthieu Riva, Neil M. Donahue, Urs Baltensperger, Imad El Haddad
Summary: This study investigates the effect of high relative humidity (RH) on the gas-particle partitioning of biogenic oxidized organic molecules at low temperatures. The results demonstrate that high RH increases the partitioning of semivolatile compounds and leads to a shift in the chemical composition and volatility distribution of organic aerosols towards less oxygenated and more volatile species.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Henning Finkenzeller, Siddharth Iyer, Xu-Cheng He, Mario Simon, Theodore K. Koenig, Christopher F. Lee, Rashid Valiev, Victoria Hofbauer, Antonio Amorim, Rima Baalbaki, Andrea Baccarini, Lisa Beck, David M. Bell, Lucia Caudillo, Dexian Chen, Randall Chiu, Biwu Chu, Lubna Dada, Jonathan Duplissy, Martin Heinritzi, Deniz Kemppainen, Changhyuk Kim, Jordan Krechmer, Andreas Kurten, Alexandr Kvashnin, Houssni Lamkaddam, Chuan Ping Lee, Katrianne Lehtipalo, Zijun Li, Vladimir Makhmutov, Hanna E. Manninen, Guillaume Marie, Ruby Marten, Roy L. Mauldin, Bernhard Mentler, Tatjana Muller, Tuukka Petaja, Maxim Philippov, Ananth Ranjithkumar, Birte Rorup, Jiali Shen, Dominik Stolzenburg, Christian Tauber, Yee Jun Tham, Antonio Tome, Miguel Vazquez-Pufleau, Andrea C. Wagner, Dongyu S. Wang, Mingyi Wang, Yonghong Wang, Stefan K. Weber, Wei Nie, Yusheng Wu, Mao Xiao, Qing Ye, Marcel Zauner-Wieczorek, Armin Hansel, Urs Baltensperger, Jerome Brioude, Joachim Curtius, Neil M. Donahue, Imad El Haddad, Richard C. Flagan, Markku Kulmala, Jasper Kirkby, Mikko Sipila, Douglas R. Worsnop, Theo Kurten, Matti Rissanen, Rainer Volkamer
Summary: Iodine is an active trace element in atmospheric chemistry that can destroy ozone and form particles. Its emissions have increased threefold since 1950 and are expected to continue rising. In laboratory experiments, iodooxy hypoiodite (IOIO) was shown to efficiently convert into iodic acid (HIO3) via reactions IOIO + O-3 -> IOIO4 and IOIO4 + H2O -> HIO3 + HOI + O-(1)(2). This laboratory-derived mechanism explains field observations of daytime HIO3 in the remote lower free troposphere and suggests a catalytic role of iodine in aerosol formation.
Article
Chemistry, Multidisciplinary
Anita M. Avery, Mitchell W. Alton, Manjula R. Canagaratna, Jordan E. Krechmer, Donna T. Sueper, Nirvan Bhattacharyya, Lea Hildebrandt Ruiz, William H. Brune, Andrew T. Lambe
Summary: Cyclic volatile methyl siloxanes (cVMS) emitted from industrial processes and consumer products dominate the presence of volatile organic compounds (VOCs) in occupied spaces. These cVMS can undergo oxidation by gas-phase radicals, such as hydroxyl radicals (OH) and chlorine atoms (Cl), leading to the formation of secondary organic aerosols (SOA). While the SOA formation potential of cVMS with OH has been studied, the impact of Cl oxidation on SOA formation has not been explored.
ACS EARTH AND SPACE CHEMISTRY
(2023)
Article
Environmental Sciences
Kathrin Kuehnhammer, Joost van Haren, Angelika Kuebert, Kinzie Bailey, Maren Dubbert, Jia Hu, S. Nemiah Ladd, Laura K. Meredith, Christiane Werner, Matthias Beyer
Summary: Deep rooting is a crucial drought-mitigation trait that plays a significant role in the water cycling of ecosystems. However, there is limited knowledge regarding the quantitative water use of deep roots and the dynamic shifts of water uptake depths with changing ambient conditions, especially for tropical trees. In this study, researchers conducted a drought, deep soil water labeling, and re-wetting experiment in the Biosphere 2 Tropical Rainforest. They found that deep soil serves as an essential water source for tropical trees, mitigating the negative impacts of drought caused by climate change. The water uptake largely depends on precipitation input.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Environmental Sciences
Jian Zhao, Ella Hakkinen, Frans Graeffe, Jordan E. Krechmer, Manjula R. Canagaratna, Douglas R. Worsnop, Juha Kangasluoma, Mikael Ehn
Summary: Highly oxygenated organic molecules (HOMs) are crucial for the formation of secondary organic aerosol (SOA), but the lack of suitable analytical techniques has limited our understanding of particle-phase HOM speciation and its relationship with gas-phase HOM formation. This study used a novel VIA-NO3-CIMS system to investigate the gas- and particle-phase HOM products of a-pinene ozonolysis. The results showed that gas-phase dimer formation was suppressed with the addition of CO or NO, but particle-phase dimers still constituted a considerable fraction of the observed SOA. Overall, the VIA-NO3-CIMS system showed promise for combined online gas- and particle-phase HOM measurements.
ATMOSPHERIC CHEMISTRY AND PHYSICS
(2023)
Article
Environmental Sciences
Qing Ye, Matthew B. B. Goss, Jordan E. E. Krechmer, Francesca Majluf, Alexander Zaytsev, Yaowei Li, Joseph R. R. Roscioli, Manjula Canagaratna, Frank N. N. Keutsch, Colette L. L. Heald, Jesse H. H. Kroll
Summary: The atmospheric oxidation of dimethyl sulfide (DMS) is an important natural source of atmospheric sulfate aerosols, but the underlying chemistry that governs the product distribution and sulfate yield from DMS oxidation remains uncertain. Chamber experiments were conducted to simulate the gas-phase oxidation of DMS under various conditions, and it was found that the isomerization reactions of peroxy radicals play a significant role in product formation. The results also showed that humidity can have a significant impact on the distribution and loss of products.
ATMOSPHERIC CHEMISTRY AND PHYSICS
(2022)
Article
Environmental Sciences
Peeyush Khare, Jordan E. Krechmer, Jo E. Machesky, Tori Hass-Mitchell, Cong Cao, Junqi Wang, Francesca Majluf, Felipe Lopez-Hilfiker, Sonja Malek, Will Wang, Karl Seltzer, Havala O. T. Pye, Roisin Commane, Brian C. McDonald, Ricardo Toledo-Crow, John E. Mak, Drew R. Gentner
Summary: This study focuses on the emissions of volatile chemical products (VCPs) and other non-combustion-related sources in urban air quality. It presents online measurements of oxygenated organic compounds in a US megacity during a 10-day winter sampling period, revealing their concentrations and variations as a function of wind direction.
ATMOSPHERIC CHEMISTRY AND PHYSICS
(2022)
Article
Ecology
Juliana Gil-Loaiza, Joseph R. Roscioli, Joanne H. Shorter, Till H. M. Volkmann, Wei-Ren Ng, Jordan E. Krechmer, Laura K. Meredith
Summary: Gas concentrations and isotopic signatures are crucial for understanding microbial metabolisms and their responses to environmental changes in soil. However, there are currently limited methods available to accurately measure soil trace gases. We have developed a versatile trace gas sampling system that integrates new diffusive soil gas probes with sensitive analyzers. This system has proven to be feasible and versatile for measuring soil gas isotopic ratios and volatile organic compounds, providing valuable insights into microbial biochemical processes in real time.