Distribution, fractionation and sources of rare earth elements in suspended particulate matter in a tropical agricultural catchment, northeast Thailand

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RT @BehavEcolPapers: Distribution, fractionation and sources of rare earth elements in suspended particulate matter in a tropical agricultu…
Distribution, fractionation and sources of rare earth elements in suspended particulate matter in a tropical agricultural catchment, northeast Thailand https://t.co/xq8VloxiUW @thePeerJ https://t.co/LAT9RguZCW
Environmental Science

Main article text

 

Introduction

Materials and Methods

Geological background

Sampling strategies and analytical methods

Euanomaly=2×(Eusample/EuPAAS)/(Smsample/SmPAAS+Gdsample/GdPAAS)

Results

Physicochemical properties of river water and SPM

Characteristics of REE contents in the SPM

Discussion

Normalized REE to post archean Australia shale and soil

Ce and Eu anomalies

Implications for river environmental management

Local environmental effects

REE in SPM flowing into the Mekong River

Conclusions

Supplemental Information

The REE and metal contents of suspended particulate matter (SPM), statistic values of ∑REE, ∑LREE, ∑MREE and ∑HREE and pH, ORP and DOC of river water.

DOI: 10.7717/peerj.10853/supp-1

Additional Information and Declarations

Competing Interests

The authors declare that they have no competing interests.

Author Contributions

Kunhua Yang conceived and designed the experiments, performed the experiments, analyzed the data, prepared figures and/or tables, authored or reviewed drafts of the paper, and approved the final draft.

Guilin Han conceived and designed the experiments, authored or reviewed drafts of the paper, and approved the final draft.

Jie Zeng performed the experiments, prepared figures and/or tables, and approved the final draft.

Wenxiang Zhou performed the experiments, authored or reviewed drafts of the paper, and approved the final draft.

Data Availability

The following information was supplied regarding data availability:

Raw data are available as a Supplemental File.

Funding

This research was funded by the National Natural Science Foundation of China, grant numbers 41661144029 and 41325010, and the Fundamental Research Funds for the Central Universities, grant number 2652019246. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.

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