Results 61 to 70 of about 13,046 (218)

Perspectives of High‐Resolution Mass Spectrometry in Soil Science

Journal of Plant Nutrition and Soil Science, EarlyView.
ABSTRACT Soil biogeochemical research requires specific, sensitive, and accurate methods to identify and quantify organic molecules in order to trace biochemical processes and assess element cycling in complex, heterogenous systems. High‐resolution mass spectrometry (HRMS) has evolved into a transformative tool for unraveling the complex chemical ...
Bruno Glaser, Tobias Bromm, Klaus Kaiser, Arthur Gross, Carsten Simon, Snežana Maletić, Ines Mulder, Oliver J. Lechtenfeld, Sören Thiele‐Bruhn, Ivy Notterpek, Callum Banfield, Michaela A. Dippold   +11 more
wiley   +1 more source

A Machine Learning Approach for Predicting Defluorination of Per- and Polyfluoroalkyl Substances (PFAS) for Their Efficient Treatment and Removal [PDF]

, 2019
We present the first application of machine learning on per- and polyfluoroalkyl substances (PFAS) for predicting and rationalizing carbon-fluorine (C–F) bond dissociation energies to aid in their efficient treatment and removal.
Chao, Lian, Bryan, Wong, Sharma, Yamijala, Akber, Raza, Lihua, Xu, Hyuna, Kwon   +5 more
core   +2 more sources

Protic Poly(Diallylammonium Sulfonate)s: Toward Water‐Processable Fluorine‐Free Ionic Materials

Macromolecular Rapid Communications, EarlyView.
A new family of fluorine‐free protic poly(ionic liquids) was synthesized via free‐radical cyclopolymerization of diallylammonium monomers containing sulfonates as counter‐anions. Their properties were found to depend on both cation and anion structure, showing thermal stability up to 300°C, glass transition temperatures between 20°C and 52°C, ionic ...
Yuliana Pairetti, Ana Clara Rolandi, Nerea Casado, Maria Forsyth, Antonela Gallastegui, David Mecerreyes   +5 more
wiley   +1 more source

Balancing sustainability goals and treatment efficacy for PFAS removal from water

npj Clean Water
Per- and polyfluoroalkyl substances (PFAS) are emerging water contaminants with significant environmental and health impacts, posing challenges in water treatment due to their high stability and persistence.
Md. Moshiur Rahman Tushar, Zaki Alam Pushan, Nirupam Aich, Lewis S. Rowles   +3 more
doaj   +1 more source

Chemical Ionization Mass Spectrometry: Fundamental Principles, Diverse Applications, and the Latest Technological Frontiers

Mass Spectrometry Reviews, EarlyView.
ABSTRACT The review examines the evolution of chemical ionization mass spectrometry (CI‐MS), a technique developed in 1966 by Field and Munson. CI is a soft‐ionization method that produces more intense molecular ions with less fragmentation than electron ionization (EI).
Malvika Dutt, Adriana Arigò, Giorgio Famiglini, Pierangela Palma, Achille Cappiello   +4 more
wiley   +1 more source

Per- and polyfluoroalkyl substances (PFAS): a global review of sources, contamination, risks, analytical challenges, and remediation strategies [PDF]

Environmental Science: Advances
Per- and polyfluoroalkyl substances (PFAS) are a large class of synthetic fluorinated compounds extensively used in industrial applications and consumer products due to their exceptional chemical stability and resistance to degradation.
Ravi Naidu, Alvin Lal, Chuks Kenneth Odoh, Yanju Liu, Paul Nathanail, Roger Brewer, Christian Zwiener, Rainer Lohmann, Katie Richardson, Jen Martin, Ramona Iery   +10 more
doaj   +1 more source

Mass Spectrometry in Authentication and Forensic Approaches for Determining the Origin of Hazardous Chemicals

Mass Spectrometry Reviews, EarlyView.
ABSTRACT Identification of a chemical agent yields insights into its physicochemical properties. By examining the intrinsic characteristics and environment of a compound, information about its history can be gathered. The main objective of authentication/forensic approaches to chemicals is to trace the history of the compound's origin, regardless of ...
Carla Orlandi, Grégoire Delaporte, Christine Albaret, Emmanuel Joubert, Anne Bossée, Emilien L. Jamin, Laurent Debrauwer   +6 more
wiley   +1 more source

Characteristics, properties and limitations of per‐ or polyfluoroalkyl substances (PFASs) and fluoropolymers

Polymer International, EarlyView.
An overview and categorization of man‐made per‐ or polyfluoroalkyl substances (PFASs) including low‐molar‐mass and high‐molar‐mass fluorochemicals, and their international regulations is presented. Though certain PFASs are toxic, bioaccumulative and cross the human cellular membranes, others, such as fluoropolymers, are safe, reliable and involved in ...
Bruno Améduri
wiley   +1 more source

Risk assessment of per- and polyfluoroalkyl substances (PFAS) in food: Symposium proceedings [PDF]

, 2021
Per- and polyfluoroalkyl substances (PFAS) comprise a large group of synthetic chemicals with a long history of use in industrial and consumer products.
Steketee, Abby, Silva, Paulo, Curtzwiler, Greg, Vorst, Keith, Saab, Neal   +4 more
core  

Machine learning‐driven advances in carbon‐based quantum dots: Opportunities accompanied by challenges

Responsive Materials, EarlyView.
Machine learning provides a unifying framework to connect structure, fluorescence properties, and applications of carbon‐based quantum dots. This review highlights how data‐driven strategies enable fluorescence regulation, reveal underlying mechanisms, and accelerate the rational design of functional carbon dots.
Liangfeng Chen, Siwei Yang, Xiangqian Cui, Ziheng Liu, Hang Wang, Yongqiang Li, Peng He, Miao Wang, Guqiao Ding   +8 more
wiley   +1 more source