Environmental #RSCEnv的动态

Exciting news! My second dissertation paper with my advisor Prof. Allison Steiner is available online now ?? In this study, we explored the impacts of biological aerosols (pollen) on the convective system, in collaboration with Prof. Sarah Brooks' group at Texas A&M. They developed ice nucleating parameterizations for pollen and ruptured pollen particles. Our findings reveal that ruptured pollen particles have a more significant impact than whole pollen grains on convective systems, potentially influencing their timing and vertical structure. Check out the full article here: https://lnkd.in/dD2rXudc #ClimateScience #BiologicalAerosols #Aerosol-Cloud interactions #Pollen

HONO is a funny little molecule. We don't understand exactly how it is formed, but it controls the atmospheric oxidizing capacity of the Indo-Gangetic Plains. Some very interesting chemistry is happening, with some heterogeneous recycling that is still not understood and characterised. Check out our latest paper led by Pooja Pawar, Sachin Ghude, Indian Institute of Tropical Meteorology, Ministry of Earth Sciences

The demand for #rare #earth #elements or #criticalminerals is rising and unconventional sources with very low concentration of rare earth are now being sought after. However, finding an effective solvent to extract low concentration rare earth elements is challenging. In our recent #IECR publication, we evaluated TOPO-based hydrophobic #deep #eutectic #solvents (#HDES) to extract rare earth elements from water. Our study finds that TOPO/propanol exhibits the highest extraction efficiency. We also evaluated #COSMO simulation to understand experimental findings. Please check out the paper for details. Authors: Laura Guidugli, Toufiq Reza Florida Institute of Technology #COES #CCE #Research

Scientists from Pacific Northwest National Laboratory and the Environmental Molecular Sciences Laboratory are seeking abstracts for an American Geophysical Union Fall Meeting session on atmospheric aerosol processes, properties, and impacts across scales. Abstract submissions are due by July 31. Submit an abstract: https://bit.ly/3WLEeUx Session A040 will be convened by Yuzhi Chen, Nurun Nahar Lata, Zezhen (Jay) Cheng, and ManishKumar Shrivastava. Abstracts should focus on the following: Multi-scale observations of aerosol properties, such as morphology, composition, volatility, mixing state, phase state, optical properties, and cloud condensation nuclei/ice nucleating particles forming abilities Investigations of multiphase processes, including nucleation, coagulation, condensation, gas-phase oxidation chemistry, heterogeneous chemistry, condensed-phase chemistry, aqueous chemistry across different scales in varied environments Evaluations of multi-scale models that incorporate new knowledge in aerosol processes and properties Assessments of the impacts of aerosol processes and properties on air quality, climate, and health #AGU #AGU24 #AtmosphericScience #AtmosphericAerosols #Clouds #IceNucleation

Check out the article behind the inside front cover of the latest issue of Environmental Science: Atmospheres ?? - The effect of aging conditions at equal OH exposure in an oxidation flow reactor on the composition of toluene-derived secondary organic aerosols - from Dr Hendryk Czech and colleagues at the Universit?t Rostock, University of Eastern Finland, Helmholtz Zentrum München and Forschungszentrum Jülich. Oxidation flow reactors (OFRs) have been increasingly used to conduct research on secondary aerosol formation potential and composition in laboratory and field studies by exposing aerosols to high levels of oxidants in short time periods. In this insightful study, the SOA precursor toluene was photochemically aged in the high-volume OFR “PEAR” ??. The physical and chemical properties of a toluene-derived SOA were analysed and discussed concerning the effect of OFR conditions and the similarity of OFR-generated tol-SOA to chamber-generated tol-SOA. Read more about this work here ? https://lnkd.in/gRrjxKsk ?? #SOA #aerosol #atmosphericscience #toluene #RSCEnv

Congratulations to Rory Phillip Downham!? In a collaboration between researchers at University of Warwick (Department of Chemistry) and the British Geological Survey, and made possible by a studentship via #CENTA, our group has used ultrahigh resolution FTICR #massspectrometry to analyze extracts from sediment cores taken from the Chiswick Eyot, located in the River Thames (London, UK).? This made it possible to follow the environmental history of the site, with the contributions of polycyclic aromatic hydrocarbons (PAHs) and other, heteroatom-containing polycyclic aromatic compounds (PACs) being observed to vary as a function of depth and, therefore, time span. The prevalence of the most aromatic components, those with the highest "aromaticity index," were observed to parallel historical coal usage in the UK. While it is common to use 16 PAHs for targeted monitoring, the ultrahigh resolution approach described here offers more detailed, untargeted insights and approximately 1600 PACs were observed. Our article is Open Access: "Tracking the history of polycyclic aromatic compounds in London through a River Thames sediment core and ultrahigh resolution mass spectrometry." Thank you again to all those involved! https://lnkd.in/eWmUaTj2

My first publication is now out and available, open access at Geochimica et Cosmochimica Acta! Examining the effects of chemical composition, environmental factors, and crystal orientation on the dissolution of polycrystalline olivine surfaces buried in natural soil environments. Results are compared with dissolution in controlled laboratory conditions and evaluated for the utility of examining physical and chemical surface alteration as an indicator for reaction conditions in terrestrial and martian settings. Hopefully the first of many to come!Link:

INTERESTED IN REAL-TIME DETECTION OF NO AND N?O? Just one month to go until the European Geosciences Union (EGU) General Assembly #EGU24 in #Vienna! ?? And with #Vienna in mind, here’s a recent application note by Dr. Christopher Sedlacek and his team at the Universit?t Wien. They used Unisense a/s #microsensors to explore the pivotal role of nitrifying #microorganisms in the global nitrogen cycle. ?? These organisms are ubiquitous and execute #nitrification, a process with varying implications depending on the environmental context. A subset of these nitrifying microorganisms can perform #denitrification under anoxic conditions, resulting in the production of nitric oxide (NO) and nitrous oxide (N?O). Strategic management of these microorganisms is integral to global nitrogen management and greenhouse gas mitigation of N?O. Learn more about the research below and come by stand 47 in the entrance hall at #EGU24 to have a #sciencechat and get your hands on #microsensors. We are here to help you asking the big Q's in #geoscience! ??

Surprising new study finds that Earth’s atmosphere can clean itself! Water droplets spontaneously produce hydroxyl radicals, reshaping our understanding of air pollution and atmospheric chemistry. Recent research reveals a surprising phenomenon in atmospheric chemistry: water droplets can spontaneously produce hydroxyl radicals (OH), a molecule vital for breaking down pollutants. This discovery, outlined in Proceedings of the National Academy of Sciences, could reshape how air pollution is modeled and understood. https://lnkd.in/gJfHRuC5

‘Dark oxygen’ from the sea floor Something is pumping out large amounts of oxygen at the bottom of the Pacific Ocean, at depths where a lack of sunlight makes photosynthesis impossible. The find has surprised scientists and the source remains a mystery. The oxygen might be generated by metal-rich mineral deposits, or nodules. To researchers’ surprise, they measured voltages of up to 0.95 volts across the surface of the nodules. It is possible that the nodules catalyse the splitting of water into oxygen and hydrogen, but more experiments are needed. https://lnkd.in/grfNFjhE