Organic matter controls rare earth element hyper-enrichment in Pacific deep-sea bioapatite

Description

This dataset includes adsorption experiments and micro-scale characterization data used to investigate the mechanisms of REE hyper-enrichment in Pacific Ocean sediments. Data S1. Leaching percentages and adsorption contents of REE from different samples using an acetic acid/Na-acetate buffer. Data S2. Trace element compositions of fresh bioapatite. Data S3. Adsorption ratios of REE by time in different samples and conditions. Data S4. Desorption percentages of REE from the uptake samples by using CH3COONH4 and EDTA-2Na as the extractants. Data S5. Saturation values of rare earth hydroxides in the system at experimental solution concentrationsa. Simulation with Visual MINTEQ 3.0. Data S6. Adsorption and precipitation ratios of REE and Ca content of supernatant at different pH. Data S7. Sensitivity analysis of BLambdaR tetrad fitting for REE adsorption Kd patterns. Data S8. The difference between the adsorption ratio of LREE and the adsorption ratio of HREE by sample adsorbed REE under different experimental conditions. Data S9. Logarithm of the partition coefficient (Kd) of REE between solid phase and liquid phase plotted in different conditions. Data S10. FTIR data for the sample and standard materials. Data S11. XAFS data for the sample and standard materials.

Institutions

• Sun Yat-Sen University

  Guangdong, Guangzhou

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