Results 31 to 40 of about 158,707 (198)
Geochemistry, Geophysics, Geosystems, 2023 Recycling of molybdenum isotopes in continental subduction zones remains debated. In this contribution, we re‐visit the Mo isotope compositions of the Sailipu post‐collisional ultrapotassic rocks in the Himalaya‐southern Tibet orogen. These ultrapotassic
Miao‐Yan Zhang +10 more
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Scientific Reports, 2017 Sixteen parent PAHs and twelve nitro-PAHs were measured in PM2.5 samples collected over one year (2013–2014) at nine urban sites in China. During the sampling period, concentrations of individual nitro-PAHs were one or two orders of magnitude lower than ...
Di Liu +7 more
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Chemical and Biological Technologies in Agriculture, 2017 Natural organic matter (NOM) plays important roles in biological, chemical, and physical processes within the terrestrial and aquatic ecosystem. Despite its importance, a clear and exhaustive knowledge on NOM chemistry still lacks.
Dainan Zhang +4 more
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Mantle Hg isotopic heterogeneity and evidence of oceanic Hg recycling into the mantle
Nature Communications, 2022 This work demonstrates distinct mass-independent mercury isotope fractionation in global basalts, which suggests mantle Hg isotope heterogeneity and reveals large-scale translithospheric Hg recycling via plate tectonics.
Runsheng Yin +12 more
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Spatial heterogeneity of sources of branched tetraethers in shelf systems: The geochemistry of tetraethers in the Berau River delta (Kalimantan, Indonesia) [PDF]
, 2016 The bulk organic matter composition (total organic carbon (TOC) content and d13CTOC) and composition of isoprenoid and branched glycerol dialkyl glycerol tetraethers (GDGT) in surface sediments from 43 stations in the Berau River delta (east Kalimantan ...
Sinninghe Damsté, Jaap S. +3 more
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Selenium Geochemistry and Health [PDF]
AMBIO: A Journal of the Human Environment, 2007 Selenium (Se) is a naturally occurring metalloid element, which is essential to human and other animal health in trace amounts but is harmful in excess. Of all the elements, Se has one of the narrowest ranges between dietary deficiency ( 400 µg day-1) (1) making it necessary to carefully control intakes by humans and other animals hence the importance
openaire +4 more sources
Observations of atmospheric mercury in China: a critical review [PDF]
Atmospheric Chemistry and Physics, 2015 China presently contributes the largest amount of anthropogenic mercury (Hg) emission into the atmosphere in the world. Over the past decade, numerous studies have been conducted to characterize the concentration and forms of atmospheric Hg in China ...
X. W. Fu +5 more
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Recent Advances in Geochemistry: Risk Assessment of Soils and Provenance of Geological Materials
Applied SciencesThis Special Issue, ‘Recent Advances in Geochemistry: Risk Assessment of Soils and Provenance of Geological Materials’, was organized to present papers from the 10th National Conference on Applied Geochemistry in China held in Kunming, Yunnan Province ...
Qingjie Gong, Ningqiang Liu
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Petroleum Science, 2017 A number of condensate reservoirs with high concentrations of H2S have been discovered in the deep dolomite reservoirs of the lower Ordovician Yingshan Formation (O1y) in the Tazhong Uplift, where the formation water has a high pH value.
Jin Su +11 more
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Source region geochemistry from unmixing downstream sedimentary elemental compositions [PDF]
, 2021 The geochemistry of river sediments is routinely used to obtain information about geologic and environmental processes occurring upstream. For example, downstream samples are used to constrain chemical weathering and physical erosion rates upstream, as ...
Lipp, Alexander
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