Water-Soluble Nitrogen-Containing Organic Compounds in Biomass . . . Nitrogen-containing organic compounds (NOCs) emitted from biomass combustion contribute significantly to air pollution, yet their comprehensive characterization remains limited In this study, NOCs in PM2 5 derived from combustion of pine wood and wheat straw were characterized using Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR MS) coupled with six ionization modes
Water-soluble organic nitrogen in PM2. 5 around the Danjiangkou . . . Water-soluble organic nitrogen (WSON) affects the formation, hygroscopicity, acidity of organic aerosols, and nitrogen biogeochemical cycles However, qualitative and quantitative characterizations of WSON remain limited due to its chemical complexity
Dominant influence of biomass combustion and cross-border transport on . . . The Tibetan Plateau (TP) is highly susceptible to climate change, and nitrogen-containing organic compounds (NOCs) in fine particulate matter (PM2:5) represent one of the largest uncertainties with respect to their impact on the climate in high-altitude areas Previous studies have shown that NOCs play a vital role in the nitrogen budget of PM2:5
Molecular Characterization of Nitrogen-Containing Organic Compounds in . . . Here we present detailed characterization of the NOC constituents of biomass burning aerosol (BBA) samples using high-resolution electrospray ionization mass spectrometry (ESI MS) Accurate mass measurements combined with MS MS fragmentation experiments of selected ions were used to assign molecular structures to individual NOC species
ACP - Dominant influence of biomass combustion and cross-border . . . We studied nitrogen-containing organic compounds (NOCs) in particulate matter <2 5 µm particles on the southeastern Tibetan Plateau We found that biomass burning and transboundary transport are the main sources of NOCs in the high-altitude area
Characteristics and source apportionment of water-soluble organic . . . Using various mass-spectrometry-based techniques, we quantified 22 nitrogen-containing organic compounds (NOCs), including 17 nitroaromatics (NACs), four amines, and urea The most abundant amine and NACs were dimethylamine and 4-nitrocatechol, respectively
EGUsphere - Measurement report: Characteristics of nitrogen-containing . . . Nitrogen-containing organic compounds (NOCs) are abundant and important aerosol components, deeply involving in global nitrogen cycle However, the sources and formation processes of NOCs remain largely unknown, particularly in the city (Urumqi, China) farthest from the ocean worldwide
Molecular Characterization of Nitrogen-Containing Compounds in Humic . . . N-containing organic compounds (NOCs) in humic-like substances (HULIS) emitted from biomass burning (BB) and coal combustion (CC) were characterized by ultrahigh-resolution mass spectrometry in the positive electrospray ionization mode