A5046245231- Heavy metals in environment
- Geochemistry and Elemental Analysis
- Selenium in Biological Systems
- Mercury impact and mitigation studies
- Heavy Metal Exposure and Toxicity
- Isotope Analysis in Ecology
- Radioactive element chemistry and processing
- Geological and Geochemical Analysis
- Radioactive contamination and transfer
- Analytical chemistry methods development
- Geochemistry and Geologic Mapping
- Coal and Its By-products
- Geology and Paleoclimatology Research
- Paleontology and Stratigraphy of Fossils
- Astro and Planetary Science
- Groundwater and Isotope Geochemistry
- Chromium effects and bioremediation
- Heavy Metals in Plants
- High-pressure geophysics and materials
- Planetary Science and Exploration
- Hydrocarbon exploration and reservoir analysis
- Mineralogy and Gemology Studies
- Radioactivity and Radon Measurements
- Nuclear Physics and Applications
- Advanced Photocatalysis Techniques
China University of Geosciences (Beijing)
2016-2025
Central University of Finance and Economics
2025
Shanghai Polytechnic University
2023-2024
Chinese Academy of Sciences
2005-2024
Institute of Geochemistry
2008-2024
State Key Laboratory of Environmental Geochemistry
2018
Ningbo University
2018
Henan Polytechnic University
2017
Chinese Academy of Geological Sciences
2008
University of Illinois Urbana-Champaign
2008
Previous studies have shown that radiocesium (mainly 137Cs) was retained at the very surface of soils in Fukushima Prefecture. Clay minerals and micas are assumed as main sorbents for cesium (Cs) Fukushima, but direct evidence is lacking this hypothesis. In study, natural sample (soil sediment) from Prefecture investigated through sequential extraction experiment (modified BCR method), which showed more than 94% 137Cs fixed residual phase. The results indicated most Cs occurred interlayer...
The accuracy and precision of Cd isotope measurement at different injecting sample sizes.
Abstract Earth’s habitability is closely tied to its late-stage accretion, during which impactors delivered the majority of life-essential volatiles. However, nature these final building blocks remains poorly constrained. Nickel (Ni) can be a useful tracer in characterizing this accretion as most Ni bulk silicate Earth (BSE) comes from impactors. Here, we apply stable isotope analysis large number meteorites and terrestrial rocks, find that BSE has lighter isotopic composition compared...
Clay minerals are important soil components and usually coexist with organic matter, forming mineral-organic associations (MOAs), which control the speciation, mobility, bioavailability of heavy metals. However, adsorption mechanism cadmium (Cd) by MOAs is still unclear, especially for amphotericorganic matter clay minerals. In this study, 12-aminododecanoic acid (ALA) montmorillonite (Mt) were chosen to prepare via intercalation (Mt-ALA composite) physical mixing mixture). Batch experiments...
Abstract Oxygen availability is crucial for the evolution of eukaryotes in geological history, but redox conditions mid-Proterozoic atmospheric-oceanic system remain vigorously debated. Previous geochemical studies suggested a very low atmospheric oxygen level probably below 0.1%–1% present (PAL) with weakly oxygenated surface ocean, which may have suppressed early ocean. A recent study, however, revealed pulsed oxygenation event that was recorded shallow marine carbonate middle Gaoyuzhuang...
A flexible, easy and highly efficient Cr purification method was developed for high-precision measurement of isotopes by double-spike MC-ICP-MS.
Rationale High‐precision magnesium (Mg) isotopic analysis for geological and environmental reference materials is a prerequisite to ensure data quality before using Mg isotopes trace geochemical processes. However, the Mg‐isotopic ratios of many commonly used materials, especially sediments, have rarely been reported. Furthermore, published values some exhibit significant inconsistency across laboratories thus need more comparison. Methods We developed different purification schemes silicate...
An inexpensive, simple and low-blank Ni purification method is presented for the high-precision measurement of isotopes by double-spike MC-ICP-MS.
High-sensitivity and high-precision (2 SD ≤ 0.06‰) measurement of chromium (Cr) isotopes at the 10 ng level was successfully carried out using double spike multiple-collector inductively couple plasma mass spectrometry (MC-ICP-MS). To enhance signal sensitivity stability, Aridus II desolvating nebulizer system improved by placing its waste gas trap bottle in an ice chamber (5 °C cold trap). This setup, beyond Cr isotope analysis, can be applied to most heavy metal measurements. The 52Cr is...