Guangzhou Institute of Geochemistry

Dual Nd isotopic archives in fossil teeth reveal bottom-current control of rare-earth element enrichment in deep-sea sediments

The global emergence of deep-sea sediments enriched in rare-earth elements and yttrium (REY) after the Late Eocene cooling coincides spatiotemporally with Antarctic bottom water (AABW) expansion, yet the underlying mechanism remains unresolved. Here, we present in situ elemental...

Molecular evolution of oxygenated organic molecules in a cloud-influenced forested mountain environment

Abstract. Atmospheric oxygenated organic molecules (OOMs) link the oxidation of volatile organic compound to secondary organic aerosol formation, yet their molecular evolution in cloud-influenced forested mountain environments remains poorly constrained. Here, gas-phase OOMs were...

Simultaneous measurements of gas- and aerosol-phase water-soluble organic nitrogen in the winter urban atmosphere of Chengdu, China

Abstract. Partitioning gaseous water-soluble organic nitrogen (WSON) to the aerosol phase is a major formation pathway of atmospheric secondary organic aerosols (SOA). However, the factors influencing this WSON transfer process remain unclear. We conducted simultaneous wintertime...

Isotopic composition of aerosol iron from anthropogenic sources: implications for source apportionment of aerosol iron

Abstract. Aerosol iron (Fe) significantly impacts human health, atmospheric chemistry and marine biogeochemistry. The stable isotope ratio of Fe, typically reported as δ56Fe, has emerged as a promising method for source apportionment of total and soluble aerosol Fe. However, the...

Photocatalysis Recovery of Precious Metals from Spent Three-Way Catalysts: The Solvent Effects of Halide Salts

Abstract Photocatalytic leaching has emerged as a promising platform for the recovery of platinum group metals (PGMs) from spent three-way catalysts (TWCs). However, the complex leaching dynamics in halide-rich media and the fundamental influence of the ionic environment on leach...

Simulated reductions in heterogeneous isoprene epoxydiol reactive uptake from aerosol morphology in the contiguous United States using the Community Multiscale Air Quality Model (CMAQv5.3.2)

Aerosol particles contain complex mixtures of polar and non-polar species that can undergo organic-inorganic phase separation. In phase-separated aerosol particles, the phase state of the outer organic coating can modulate heterogeneous chemistry. Heterogeneous chemistry leading...

Single-Cell Insights into Virus–Microbe Interactions in Emerging Contaminant Degradation

Abstract Viruses are increasingly recognized as critical regulators of microbial ecology, yet their roles in pollutant degradation remain largely unexplored. Here, we integrate Raman-activated cell sorting–stable isotope probing (RACS-SIP) and single-cell genomics to elucidate vi...

A Shallow‐Marine Ecosystem Before Initial Tibetan Plateau Uplift

Abstract The uplift of the Tibetan Plateau profoundly influences global atmospheric circulation, sediment transport, and biodiversity, but its pre‐uplift marine paleoenvironment remains poorly understood. Here we report the first discovery of an in situ benthic fossil assemblage...

Rodingite‐Derived Melt as a Recipe for Ultra‐Calcic Magmas

Abstract Rodingite is a high‐CaO rock formed by Ca‐rich fluid metasomatism on mafic protoliths. It typically occurs within serpentinite and represents an often‐overlooked constituent of the altered oceanic lithosphere that may be subducted into the mantle. However, the fate of ro...

The parent bodies of Ryugu and Ivuna formed before those of other carbonaceous chondrites

Most carbonaceous chondrite (CC) meteorites contain abundant chondrules, millimeter-scale spherical inclusions of previously molten material. Ivuna-type carbonaceous chondrites (CIs) do not contain chondrules, nor do samples of the carbonaceous asteroid Ryugu. CIs and Ryugu share...

Interactions between Photochemical and Microbial Degradation on the Pyrogenic Soil-Derived Dissolved Organic Matter

Abstract Photochemical and microbial processes act as primary pathways regulating the transformation and fate of pyrogenic dissolved organic matter (pyDOM) in natural environments, yet their interactions remain poorly understood under different heating conditions. Here, we combin...

Heatwave‐Period Temperature Response Parameterizations Amplify Modeled Isoprene Emissions From Temperate Trees

Abstract Heatwaves can alter temperature responses of biogenic volatile organic compound emissions, yet these effects remain poorly constrained for temperate trees. We measured leaf‐level isoprene temperature response curves for Platanus occidentalis and Populus deltoides in cent...