Results 21 to 30 of about 1,885,987 (306)

Design and characterization of a smog chamber for studying gas-phase chemical mechanisms and aerosol formation [PDF]

Atmospheric Measurement Techniques, 2014
We describe here characterization of a new state-of-the-art smog chamber facility for studying atmospheric gas-phase and aerosol chemistry. The chamber consists of a 30 m3 fluorinated ethylene propylene (FEP) Teflon film reactor housed in a temperature ...
X. Wang, T. Liu, F. Bernard, X. Ding, S. Wen, Y. Zhang, Z. Zhang, Q. He, S. Lü, J. Chen, S. Saunders, J. Yu   +11 more
doaj   +1 more source

A seasonal study of particulate organic matter composition and quality along an offshore transect in the southern North Sea [PDF]

, 2017
We investigated temporal differences in particulate organic matter (POM) composition and quality in thewater column and sediment at three stations along a transect from the coast via Oyster Grounds toDogger Bank within the southern North Sea, using a ...
Middelburg, J.J., K. Soetaert, Soetaert, Karline, Organic geochemistry & molecular biogeology, Geochemistry, Organic geochemistry, Sinninghe Damsté, J.S., J.S. Sinninghe Damsté, J.J. Middelburg, Le Guitton, M., Soetaert, K., M. Le Guitton   +11 more
core   +2 more sources

Elution of Adsorbed n-alkanes by 5Å Molecular Sieve Using Solvent Mixtures for Compound-Specific Hydrogen Isotopic Analysis

Yankuang ceshi, 2017
The extraction procedure using solvent mixtures has been used to elute n-alkanes adsorped by 5Å molecular sieve and subsequent stable carbon isotope ratio analysis of individual n-alkanes.
CHEN Sha-sha, ZHU Xin-xu, JIA Wang-lu, YU Chi-ling, PENG Ping-an   +4 more
doaj   +1 more source

Seasonal variation of secondary organic aerosol tracers in Central Tibetan Plateau [PDF]

Atmospheric Chemistry and Physics, 2015
Secondary organic aerosol (SOA) affects the earth's radiation balance and global climate. High-elevation areas are sensitive to global climate change.
R.-Q. Shen, X. Ding, Q.-F. He, Z.-Y. Cong, Q.-Q. Yu, X.-M. Wang   +5 more
doaj   +1 more source

C₂₇-C₃₀ neohop-13(18)-enes and their saturated and aromatic derivatives in sediments: Indicators for diagenesis and water column stratification [PDF]

, 2014
A limited suite of C-27, C-29 and C-30 rearranged hopenes identified as neohop-13(18)-enes have been reported in immature Recent and ancient marine/lacustrine sediments and their presence has been explained by dehydration and isomerisation of ubiquitous ...
Organic geochemistry & molecular biogeology, Volkman, J.K., Schouten, S., Organic geochemistry, Sinninghe Damsté, J.S.   +4 more
core   +2 more sources

Tooth enamel nitrogen isotope composition records trophic position: a tool for reconstructing food webs

Communications Biology, 2023
Enamel-bound nitrogen isotopes in modern and fossil mammal teeth preserve dietary and trophic level information. This novel geochemical archive can be used to reconstruct trophic niche in ancient ecosystems.
Jennifer N. Leichliter, Tina Lüdecke, Alan D. Foreman, Nicolas Bourgon, Nicolas N. Duprey, Hubert Vonhof, Viengkeo Souksavatdy, Anne-Marie Bacon, Daniel M. Sigman, Thomas Tütken, Alfredo Martínez-García   +10 more
doaj   +1 more source

Source apportionment and dynamic changes of carbonaceous aerosols during the haze bloom-decay process in China based on radiocarbon and organic molecular tracers [PDF]

Atmospheric Chemistry and Physics, 2016
Fine carbonaceous aerosols (CAs) is the key factor influencing the currently filthy air in megacities in China, yet few studies simultaneously focus on the origins of different CAs species using specific and powerful source tracers. Here, we present a
J. Liu, J. Li, D. Liu, P. Ding, C. Shen, Y. Mo, X. Wang, C. Luo, Z. Cheng, S. Szidat, Y. Zhang, Y. Chen, G. Zhang   +12 more
doaj   +1 more source

Compound-specific stable isotope analysis of nitrogen-containing intact polar lipids [PDF]

, 2015
Rationale Compound-specific isotope analysis (CSIA) of nitrogen in amino acids has proven a valuable tool in many fields (e.g. ecology). Several intact polar lipids (IPLs) also contain nitrogen, and their nitrogen isotope ratios have the potential to ...
Sinninghe Damsté, Jaap S., Schouten, Stefan, Svensson, Elizabeth, Organic geochemistry & molecular biogeology, Geochemistry, Organic geochemistry, Stam, Axel, Middelburg, Jack J.   +7 more
core   +2 more sources

Seasonal and Day–Night Variations in Carbonaceous Aerosols and Their Light-Absorbing Properties in Guangzhou, China

Atmosphere, 2023
Carbonaceous aerosols (CAs), including elemental carbon (EC) and organic carbon (OC), have become the dominant component in PM2.5 in many Chinese cities, and it is imperative to address their spatiotemporal variations and sources in order to continually ...
Jiannan Su, Runqi Zhang, Bowen Liu, Mengxue Tong, Shaoxuan Xiao, Xiaoyang Wang, Qilong Zhao, Wei Song, Dilinuer Talifu, Xinming Wang   +9 more
doaj   +1 more source

Sources of organic matter for bacteria in sediments of Lake Rotsee, Switzerland [PDF]

, 2017
Determination of carbon sources and microbial activity in lake sediment is important for understanding organic carbon preservation and methane production.
Liu, Zhengwen, Organic geochemistry & molecular biogeology, Lammers, M., Marieke Lammers, Geochemistry, Liu, Z., Su, Y., Stratigraphy and paleontology, Loes van Bree, Jack J. Middelburg, Zhang, Y., Middelburg, Jack J., Gert-Jan Reichart, Reichart, Gert-Jan, Yongdong Zhang, Middelburg, J.J., General geochemistry, Yaling Su, Zhang, Yongdong, Organic geochemistry, Reichart, G.-J., Su, Yaling, van Bree, Loes, van Bree, L., Lammers, Marieke, Zhengwen Liu   +25 more
core   +2 more sources