Yulin Qi
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View article: Unraveling Seasonal Dynamics of Dissolved Organic Matter in Agricultural Ditches Using UV-Vis Absorption and Excitation–Emission Matrix (EEM) Fluorescence Spectroscopy
Unraveling Seasonal Dynamics of Dissolved Organic Matter in Agricultural Ditches Using UV-Vis Absorption and Excitation–Emission Matrix (EEM) Fluorescence Spectroscopy Open
Seasonal dynamics of dissolved organic matter (DOM) in agricultural ditches significantly impact carbon cycling and water quality in connected rivers. This study aimed to characterize seasonal variations in DOM composition and dynamics wit…
View article: Properties of iron-bound organic carbon and its implications for the conservation of coastal wetland vegetation
Properties of iron-bound organic carbon and its implications for the conservation of coastal wetland vegetation Open
Reactive iron oxides, as an efficient “rust sink” for organic carbon, play a pivotal role in the long-term preservation of organic carbon within global soils. Although coastal wetlands are crucial carbon sinks on Earth, the composition of …
View article: Selective Solid Phase Extraction Using a Mixed‐Mode Cation Exchange Cartridge Facilitates the Mass Spectrometry Analysis on Dissolved Organic Nitrogen
Selective Solid Phase Extraction Using a Mixed‐Mode Cation Exchange Cartridge Facilitates the Mass Spectrometry Analysis on Dissolved Organic Nitrogen Open
Rationale Dissolved organic nitrogen (DON) is a crucial component in environment, which acts as the largest reservoir of nitrogen and plays a significant role in the nitrogen cycling, pollutant transport, and substrate utilization among va…
View article: Comprehensive Two‐Dimensional Gas Chromatography–Mass Spectrometry for the Analysis of Atmospheric Particulate Matter
Comprehensive Two‐Dimensional Gas Chromatography–Mass Spectrometry for the Analysis of Atmospheric Particulate Matter Open
Background Atmospheric particulate matter (PM) is a complex mixture with a wide range of sources, but only a limited proportion can be identified by existing analytical techniques. Comprehensive two‐dimensional gas chromatography–mass spec…
View article: Potential Remineralization of Terrestrial Organic Matter in the Sediments of the New Britain Trench Revealed by Optical and Molecular Properties of the Water‐Extracted Dissolved Organic Matter
Potential Remineralization of Terrestrial Organic Matter in the Sediments of the New Britain Trench Revealed by Optical and Molecular Properties of the Water‐Extracted Dissolved Organic Matter Open
Hadal trenches have recently been recognized as hotspots for organic carbon burial and degradation in the deep sea owing to its distinctive “funnel‐shaped” topography and frequent tectonic activity. In this study, we analyzed dissolved org…
View article: Molecular characteristics of dissolved organic matter in the porewater of "Challenger" Deep sediments, Mariana Trench
Molecular characteristics of dissolved organic matter in the porewater of "Challenger" Deep sediments, Mariana Trench Open
Hadal trenches (> 6,000 m water depth) have been revealed as hotspots of organic carbon deposition and mineralization. Here, we present the molecular compositions of porewater dissolved organic matter (DOM) at the “Challenger” Deep (Sit…
View article: Optimized liquid chromatography–tandem mass spectrometry protocol for enhanced detection of 45 pesticides in water and soil samples
Optimized liquid chromatography–tandem mass spectrometry protocol for enhanced detection of 45 pesticides in water and soil samples Open
Rationale The development of analytical screening techniques for pesticides is crucial for preventing and mitigating environmental contamination. Mass spectrometry‐based screening methods differ based on the complexity of the sample matrix…
View article: Assessing the Impacts of Reservoirs on Riverine Dissolved Organic Matter: Insights From the Largest Reservoir in the Pearl River
Assessing the Impacts of Reservoirs on Riverine Dissolved Organic Matter: Insights From the Largest Reservoir in the Pearl River Open
Extensive reservoir construction has fragmented more than 70% of the world's rivers, significantly impacting river connectivity and carbon cycling. However, the response of riverine dissolved organic matter (DOM) to reservoir influence and…
View article: [Chemical diversity of dissolved organic matter revealed by ultra performance liquid chromatography-Fourier transform ion cyclotron resonance mass spectrometry].
[Chemical diversity of dissolved organic matter revealed by ultra performance liquid chromatography-Fourier transform ion cyclotron resonance mass spectrometry]. Open
Dissolved organic matter (DOM) is a highly complex and heterogeneous mixture that exists in various environments, including rivers, oceans, soils, and atmospheric aerosols. DOM plays a crucial role in biogeochemical cycles and significantl…
View article: Potential impacts of climate and anthropogenic-induced changes on DOM dynamics among the major Chinese rivers
Potential impacts of climate and anthropogenic-induced changes on DOM dynamics among the major Chinese rivers Open
Dissolved organic matter (DOM) is closely linked to human activities in drainage basins and plays a crucial role in maintaining ecosystem functioning and reflecting environmental quality. However, the impacts of climate and anthropogenic-i…
View article: Impact of biogenic secondary organic aerosol (SOA) loading on the molecular composition of wintertime PM <sub>2.5</sub> in urban Tianjin: an insight from Fourier transform ion cyclotron resonance mass spectrometry
Impact of biogenic secondary organic aerosol (SOA) loading on the molecular composition of wintertime PM <sub>2.5</sub> in urban Tianjin: an insight from Fourier transform ion cyclotron resonance mass spectrometry Open
Biomass burning is one of the key sources of urban aerosols in the North China Plain, especially during winter, when the impact of secondary organic aerosols (SOAs) formed from biogenic volatile organic compounds (BVOCs) is generally consi…
View article: Molecular transformation of organic nitrogen in Antarctic penguin guano-affected soil
Molecular transformation of organic nitrogen in Antarctic penguin guano-affected soil Open
Organic nitrogen (ON) is an important participant in the Earth's N cycle. Previous studies have shown that penguin feces add an abundance of nutrients including N to the soil, significantly changing the eco-environment in ice-free areas in…
View article: Identification of Trace Components in Sauce-Flavor Baijiu by High-Resolution Mass Spectrometry
Identification of Trace Components in Sauce-Flavor Baijiu by High-Resolution Mass Spectrometry Open
Sauce-flavor Baijiu is one of the most complex and typical types of traditional Chinese liquor, whose trace components have an important impact on its taste and quality. Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR M…
View article: Meet up‐and‐coming analytical scientists – Yulin Qi
Meet up‐and‐coming analytical scientists – Yulin Qi Open
Analytical sciences are among the most dynamically developing fields and have been inherently integrated into many various scientific disciplines. At the same time, early career researchers (ECRs) are among those whose contribution to this…
View article: Land use as a major factor of riverine nitrate in a semi-arid farming-pastoral ecotone: New insights from multiple environmental tracers and molecular signatures of DOM
Land use as a major factor of riverine nitrate in a semi-arid farming-pastoral ecotone: New insights from multiple environmental tracers and molecular signatures of DOM Open
The nitrogen contamination in rivers has become significant concern in arid and semiarid areas due to water resource shortage and extensive anthropogenic activities in relation to land-use changes in China. As a major nitrogen species, ide…
View article: Comment on acp-2022-486
Comment on acp-2022-486 Open
Abstract. Biomass burning is one of the key sources of urban aerosols in the North China Plain, especially during winter, when the impact of secondary organic aerosols (SOAs) formed from biogenic volatile organic compounds (BVOCs) is gener…
View article: Deciphering dissolved organic matter by Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR MS): from bulk to fractions and individuals
Deciphering dissolved organic matter by Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR MS): from bulk to fractions and individuals Open
Exploring the source, transformation pathways, and the fate of natural organic matter (NOM) is critical to understanding the regional/global carbon cycle and carbon budget. The dissolved fraction of NOM, i.e., dissolved organic matter (DOM…
View article: TiO<sub>2</sub>/CdS composite photocathode improves the performance and degradation of wastewater in microbial fuel cells
TiO<sub>2</sub>/CdS composite photocathode improves the performance and degradation of wastewater in microbial fuel cells Open
Optimization of dye decolourization for wastewater and power production are explored in dual‐chamber microbial fuel cells (MFCs) with TiO 2 /CdS photocathodes. The rapid reduction of azo dye methylene blue (MB) and power production were en…
View article: Seasonal variation of nitrogen biogeochemical processes constrained by nitrate dual isotopes in cascade reservoirs, Southwestern China&#160;
Seasonal variation of nitrogen biogeochemical processes constrained by nitrate dual isotopes in cascade reservoirs, Southwestern China  Open
<p>The increase of affected river reaches by reservoirs has drastically disturbed the original hydrological conditions, and subsequently influenced the nutrient biogeochemistry in the aquatic system, particularly in the cascade reser…
View article: Characterization of Lignin Compounds at the Molecular Level: Mass Spectrometry Analysis and Raw Data Processing
Characterization of Lignin Compounds at the Molecular Level: Mass Spectrometry Analysis and Raw Data Processing Open
Lignin is the second most abundant natural biopolymer, which is a potential alternative to conventional fossil fuels. It is also a promising material for the recovery of valuable chemicals such as aromatic compounds as well as an important…
View article: Quadrupole detection FT‐ICR mass spectrometry offers deep profiling of residue oil: A systematic comparison of 2ω 7 Tesla versus 15 Tesla instruments
Quadrupole detection FT‐ICR mass spectrometry offers deep profiling of residue oil: A systematic comparison of 2ω 7 Tesla versus 15 Tesla instruments Open
Mass resolving power is one of the key features of Fourier transform ion cyclotron resonance mass spectrometry (FT‐ICR MS), which enables the molecular characterization of complex mixtures. Quadrupole (2ω) detection provides a significant …
View article: Analysis of natural organic matter via fourier transform ion cyclotron resonance mass spectrometry: an overview of recent non‐petroleum applications
Analysis of natural organic matter via fourier transform ion cyclotron resonance mass spectrometry: an overview of recent non‐petroleum applications Open
Among the different techniques for mass analysis, ultra‐high‐resolution Fourier transform ion cyclotron resonance (FTICR) is the method of choice for highly complex samples, as it offers unrivaled mass accuracy and resolving power, combine…
View article: Rapid mass spectral fingerprinting of complex mixtures of decomposed lignin: Data‐processing methods for high‐resolution full‐scan mass spectra
Rapid mass spectral fingerprinting of complex mixtures of decomposed lignin: Data‐processing methods for high‐resolution full‐scan mass spectra Open
Lignin is the second most abundant natural biopolymer and its wastes are significant sources for renewable chemicals as an alternative to conventional fossil fuels. Consequently, chemical characterization methods are required to assess the…
View article: Application of phase correction to improve the characterization of photooxidation products of lignin using 7 Tesla Fourier-transform ion cyclotron resonance mass spectrometry
Application of phase correction to improve the characterization of photooxidation products of lignin using 7 Tesla Fourier-transform ion cyclotron resonance mass spectrometry Open
Lignin is the second most abundant natural biopolymer and potentially a valuable alternative energy source for conventional fossil fuels. In this study, Fourier-transform ion cyclotron resonance-mass spectrometry (FTICR-MS) in conjunction …