Deciphering dissolved organic matter by Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR MS): from bulk to fractions and individuals

Carbon Research, Journal Year: 2022, Volume and Issue: 1(1)

Published: June 18, 2022

Abstract Exploring the source, transformation pathways, and fate of natural organic matter (NOM) is critical to understanding regional/global carbon cycle budget. The dissolved fraction NOM, i.e., (DOM), a complex mixture resulting from plant, animal microbial plays crucial role in many biogeochemical processes at land-ocean-atmosphere interfaces. advance Fourier transform ion cyclotron resonance mass spectrometer (FT-ICR MS) makes detailed characterization DOM molecular level possible. On other hand, elucidation sample also presents significant analytical challenges, these challenges act as driving force for instrumentation methodology development on FT-ICR MS. This review article has been written aid those working biogeochemistry, environmental atmospheric chemistry, related areas which investigate elemental cycles transformations. First, fundamental theory, historical perspective, recent advances field have introduced. geological samples continues present it become experimental methods. These achievements analysis had an impact upon fields science, geochemistry, chemistry. Next, varieties applications MS described, followed by our view future this technique earth science research. We believe that covers essential pairing collectively offers geochemical scientists substantial resource their Graphical abstract

Language: Английский

---

Significant influence of urban human activities and marine input on rainwater chemistry in a coastal large city, China

Water Research, Journal Year: 2024, Volume and Issue: 257, P. 121657 - 121657

Published: April 22, 2024

Language: Английский

---

Recent Progress in Atmospheric Chemistry Research in China: Establishing a Theoretical Framework for the “Air Pollution Complex”

Advances in Atmospheric Sciences, Journal Year: 2023, Volume and Issue: 40(8), P. 1339 - 1361

Published: April 28, 2023

Atmospheric chemistry research has been growing rapidly in China the last 25 years since concept of "air pollution complex" was first proposed by Professor Xiaoyan TANG 1997. For papers published 2021 on air (only included Web Science Core Collection database were considered), more than 24 000 authored or co-authored scientists working China. In this paper, we review a limited number representative and significant studies atmospheric few years, including (1) sources emission inventories, (2) chemical processes, (3) interactions with meteorology, weather climate, (4) between biosphere atmosphere, (5) data assimilation. The intention not to provide complete all progress made but rather serve as starting point for learning about advances reviewed paper have enabled theoretical framework complex be established, provided robust scientific support highly successful control policies China, created great opportunities education, training, career development many graduate students young scientists. This further highlights that developing low-income countries are heavily affected can benefit from these advances, whilst at same time acknowledging challenges still remain hopefully addressed over next decades.

Language: Английский

---

Chemodiversity of Dissolved Organic Matter Is Governed by Microbial Biogeography in Inland Waters

Environmental Science & Technology, Journal Year: 2023, Volume and Issue: 57(20), P. 7753 - 7763

Published: May 10, 2023

Dissolved organic matter (DOM) is crucial for the carbon biogeochemical cycle and has a close link with microbiome in aquatic ecosystems; however, causal relationship between DOM microbial diversity inland waters not very clear so far. Therefore, national survey of China's was conducted, chemical composition community were determined by Fourier transform ion cyclotron resonance mass spectrometry high-throughput sequencing to clarify abovementioned question. Here, we found that chemodiversity governed assembly waters, vice versa. Under control biogeography, showed geographical distribution difference. Water mainly constrained bacterial archaeal composition, whereas sediment controlled eukaryotic fungal composition. In addition, also affected interaction different groups sediments. The study first proposes regulatory mechanism on pattern chemodiversity, thus further deepening understanding cycle.

Language: Английский

---

Will various interpretation strategies of the same ultrahigh‐resolution mass spectrometry data tell different biogeochemical stories? A first assessment based on natural aquatic dissolved organic matter

Limnology and Oceanography Methods, Journal Year: 2023, Volume and Issue: 21(6), P. 320 - 333

Published: May 10, 2023

Abstract Fourier ion cyclotron resonance mass spectrometry (FT‐ICR MS), one of the state‐of‐the‐art ultrahigh‐resolution techniques, is widely used in dissolved organic matter (DOM) research. As research that focuses on identifying DOM molecular fingerprints increases tremendously, there and will be an urgent need to compare among studies. Different groups usually use various types data processing interpretation strategies. It critical explore if different strategies impact comparability FT‐ICR MS results their biogeochemical interpretations. To address this question, we selected samples along a freshwater‐to‐marine continuum measured by negative‐ion mode electrospray ionization MS. We interpreted raw using strategies, compared evaluated strategy‐induced effects Our show total 3827 formulas account for 91.6% ± 4.1% (on average) intensity are assigned all while 6521 8.4% not commonly three conclude (i) do significantly affect geochemical stories relied composition, (ii) comparison based gives more reliable than formular number alone. Moreover, also provide (by our strategies) community interpretation. aim call attention improving facilitating integration composition global

Language: Английский

---

Characterizing the regional distribution, interaction with microorganisms, and sources of dissolved organic matter for summer rainfall: Insights from spectroscopy, community structure, and back-trajectory analyses

The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 926, P. 172086 - 172086

Published: March 29, 2024

Language: Английский

---

Exometabolomic exploration of culturable airborne microorganisms from an urban atmosphere

Atmospheric chemistry and physics, Journal Year: 2025, Volume and Issue: 25(3), P. 1805 - 1829

Published: Feb. 10, 2025

Abstract. The interactions of metabolically active atmospheric microorganisms with cloud organic matter can alter the carbon cycle. Upon deposition, influence microbial communities in surface Earth systems. However, metabolic activities cultivable settled habitats remain less understood. Here, we cultured typical bacterial and fungal species isolated from urban atmosphere using tryptic soy broth (TSB) Sabouraud dextrose (SDB), respectively, investigated their exometabolites to elucidate potential roles biogeochemical cycles. Molecular compositions were analyzed ultrahigh-resolution Fourier transform ion cyclotron resonance mass spectrometry. Annotation through Kyoto Encyclopedia Genes Genomes database helped identify processes. Results showed that strains produced lower H / C higher O ratios compared both consumed resistant compounds. As CHON compounds are abundant TSB (85 %) SDB (78 %), also constituted over 50 % identified exometabolite formulas. Bacterial more CHONS (25.2 while rich CHO (31.7 %). These predominantly comprised aliphatic/peptide-like carboxyl-rich alicyclic molecule (CRAM)-like Significant variations metabolites observed among different strains. Bacteria exhibited proficiency amino acid synthesis, fungi actively involved metabolism, transcription, expression Lipid carbohydrate metabolism varied widely strains, notable differences secondary metabolism. This study provides new insights into transformation oxidative capacity concerning at air–land/water interfaces. findings pivotal for assessing impacts clouds or following deposition.

Language: Английский

---

The transformation of dissolved organic matter and formation of halogenated by-products during electrochemical advanced oxidation pretreatment for shale gas produced water

Journal of Hazardous Materials, Journal Year: 2023, Volume and Issue: 455, P. 131614 - 131614

Published: May 10, 2023

Language: Английский

---

Molecular characteristics of dissolved organic phosphorus in watershed runoff: Coupled influences of land use and precipitation

Journal of Environmental Sciences, Journal Year: 2024, Volume and Issue: 148, P. 387 - 398

Published: Feb. 1, 2024

Language: Английский

---

Peatland Wildfires Enhance Nitrogen-Containing Organic Compounds in Marine Aerosols over the Western Pacific

Environmental Science & Technology, Journal Year: 2024, Volume and Issue: 58(25), P. 10991 - 11002

Published: June 3, 2024

Peatland wildfires contribute significantly to the atmospheric release of light-absorbing organic carbon, often referred as brown carbon. In this study, we examine presence nitrogen-containing compounds (NOCs) within marine aerosols across Western Pacific Ocean, which are influenced by peatland fires from Southeast Asia. Employing ultrahigh-resolution Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR MS) in electrospray ionization (ESI) positive mode, discovered that NOCs predominantly composed reduced nitrogenous bases, including CHN+ and CHON+ groups. Notably, count NOC formulas experiences a marked increase plumes compared those found typical air masses. These NOCs, identified N-heterocyclic alkaloids, serve potential chromophores. Furthermore, many demonstrate pyrolytic stability, engage variety substitution reactions, display enhanced hydrophilic properties, attributed chemical processes such methoxylation, hydroxylation, methylation, hydrogenation occur during emission subsequent aging. During daytime transport, aging aromatic compounds, particularly aliphatic amines prone oxidation reactions with amine, was observed. The findings underscore critical role augmenting organics aerosols, underscoring need for in-depth research into their effects on ecosystems regional climatic conditions.

Language: Английский

---