Xiaolin Hou

Institute of Earth Environment

Author Statistics

Papers

Citation

H-Index

i-10 index

Research Trends

Author Order

Document Type

Co-Authors

Luyuan Zhang

Institute of Earth Environment

Ala Aldahan

United Arab Emirates University

Yukun Fan

Institute of Earth Environment

Weijian Zhou

Institute of Earth Environment

Jixin Qiao

Technical University of Denmark

Keliang Shi

Lanzhou University

Göran Possnert

Uppsala University

Qi Liu

Chinese Academy of Sciences

Ning Chen

Chinese Academy of Sciences

Xue Zhao

Chinese Academy of Sciences

Cooperative Institutions

Chinese Academy of Sciences

134

Institute of Earth Environment

University of Chinese Academy of Sciences

Lanzhou University

Huazhong University of Science and Technology

State Key Laboratory of Loess and Quaternary Geology

Xi'an Jiaotong University

Wuhan National Laboratory for Optoelectronics

Technical University of Denmark

Peking University

Author Statistics

Papers

Citation

H-Index

i-10 index

Research Field

Records of iodine isotopes (129I, 127I) in the Barkol peat bog from northwest China and their sources, transport and preservation

Chemosphere (2021)

Xue Zhao Xiaolin Hou Dongliang Zhang Yunpeng Yang Zhao Huang

The research on geochemical behaviors of iodine is significant for deep understanding of the source and distribution of iodine on the earth.However, as one of the most important sources, the ocean emissions and relative transport pathways of iodine, as well as the preservation after deposition are still not well known, especially in the arid areas of central Asia.A peat sediment core collected nearby Barkol Lake from northwest China was analyzed for iodine isotopes ( 127 I and 129 I).The observed high 127 I concentration in the top 2 cm indicated a significant accumulation of iodine in the surface oxic conditions due to the continuous sources of incompletely decomposed organic matter.Dissociation of iodine into pore waters occurred once the anoxic conditions established beneath the surface by a serial reduction reaction during the degradation of organic matter.The temporal variation of anthropogenic 129 I in the peat sediment recorded its sources and transport pathways.Besides the global fallout 129 I during late 1950s and early 1960s, the significantly increased air releases from the European nuclear fuel reprocessing plants during 1975 to 1997 and the increased marine discharges since 1990's contributed the major portion of 129 I in the peat core.The major transport pathway of 129 I from the Europe was through Westerlies following the re-emission of the marine discharged 129 I to the atmosphere, indicating a clearly ocean emitted iodine in the concerned Central Asia.

10.1016/j.chemosphere.2021.130531

Cite

Citations (11)

127I and 129I species in the English Channel and its adjacent areas: Uncovering impact on the isotopes marine pathways

Water Research (2022)

Peng He Hongying Pang Zheng Yang Sihong Li Yi Huang

Iodate

10.1016/j.watres.2022.119178

Cite

Citations (4)

Insight Into Radio‐Isotope ¹²⁹I Deposition in Fresh Snow at a Remote Glacier Basin of Northeast Tibetan Plateau, China

Geophysical Research Letters (2018)

Zhiwen Dong Yaping Shao Dahe Qin Luyuan Zhang Xiaolin Hou

Abstract We present data of 129 I deposition in fresh snow in the Laohugou glacier basin, northeast Tibetan Plateau, in summer 2016 and 2017, and trace its source and elevational distribution in the troposphere. Our results show that the 129 I/ 127 I atomic ratios in the fresh snow on the glacier surface are about 2 orders of magnitude larger than those in the Antarctic fresh snow and 4 orders the prenuclear level, indicating a predominantly anthropogenic source of the 129 I in the mountain glacier environment of northeast Tibetan Plateau. The 129 I level in the Laohugou glacier basin is 1–2 orders of magnitude lower than at representative European locations, and not significantly higher than that observed at other sites in Asia. The 129 I/ 127 I atomic ratio and 129 I level show clear increases with elevation from 4,300 to 5,100 m above sea level. The 129 I in the Laohugou glacier basin is probably deposited from the upper troposphere where there exists a local maximum of 129 I. A conceptual model for interpretation of the observed 129 I concentration and profile in Laohugou is provided. Thus, this work is of importance in providing a more complete view on the transport, dispersion, and removal of 129 I in the atmosphere.

Deposition

Elevation (ballistics)

10.1029/2018gl078480

Cite

Citations (16)

Tendency of soil erosion dynamics by coupling radioisotopes and RUSLE model on the Southeastern Tibetan Plateau in response to climate warming and human activity

CATENA (2023)

Peng Chen Markus Czymzik Zhongbo Yu Ala Aldahan Jinguo Wang

10.1016/j.catena.2023.106954

Cite

Citations (9)

Deciphering the Ages of Saline Water in the Baltic Sea by Anthropogenic Radiotracers

Research Square (Research Square) (2024)

Jixin Qiao Mu Lin Xiaolin Hou Jun She Jens Murawski

Abstract The slow water renewal endows the Baltic Sea a strong retention of pollutants/nutrients. Constraining water age is a practical way to depict the transport pathways/timescales for water masses and accompanying soluble substances. Although the water ages in the Baltic Sea have been resolved by 3D ocean models 20 years ago, the simulated results have not been verified. In this work, we exploited two anthropogenic radionuclides (¹²⁹I and ²³⁶U) as an age marker to constrain the ages of inflowing North Sea saline waters into the Baltic Sea. Our results indicate that the Baltic Sea has a highly stratified structure with distinctly different timescales for surface-water and deep-water circulations (3 ± 2 and 20 ± 3 years, respectively), providing the first observation-based proof for the multi-decadal retention of (radioactive) pollutants within the Baltic Sea. This work demonstrates the power of anthropogenic radiotracers in investigating hydrodynamic processes in the Northwestern European coastal areas.

Baltic sea

10.21203/rs.3.rs-3074029/v1

Cite

Citations (0)

Deciphering the Ages of Saline Water in the Baltic Sea by Anthropogenic Radiotracers

Authorea (Authorea) (2023)

Mu Lin Jixin Qiao Xiaolin Hou Jun She Jens Murawski

The slow water renewal endows the Baltic Sea a strong retention of pollutants/nutrients. Constraining water age is a practical way to depict the transport pathways/timescales for water masses and accompanying soluble substances. Although the water ages in the Baltic Sea have been resolved by 3D ocean models 20 year ago, the simulated results have not been verified. In this work, we exploited two anthropogenic radionuclides (129I and 236U) as an age marker to constrain the ages of inflowing North Sea saline waters into the Baltic Sea. Our results indicate that the Baltic Sea has a highly stratified structure with distinctly different timescales for surface-water and deep-water circulations (3{plus minus}2 and 20 {plus minus} 3 years, respectively), providing the first observation-based proof for the multi-decadal retention of (radioactive) pollutants within the Baltic Sea. This work demonstrates the power of anthropogenic radiotracers in investigating hydrodynamic processes in the Northwestern European coastal areas.

Baltic sea

North sea

10.22541/essoar.168987151.16103241/v1

Cite

Citations (0)

Plutonium isotopes in the northwestern South China Sea: Level, distribution, source and deposition

Environmental Pollution (2022)

Mengting Zhang Jixin Qiao Weichao Zhang Liuchao Zhu Xiaolin Hou

The spatial distribution of plutonium isotopes (239Pu, 240Pu) in the surface sediments collected from the northwestern South China Sea (SCS) in 2018 was investigated. The 239,240Pu concentrations in surface sediments vary from 0.048 to 0.960 mBq/g (with mean of 0.282 ± 0.242 mBq/g) depending on the geographical feature of the sampling location such as the river estuary, continental shelf, slope and deep basin. Higher 240Pu/239Pu atomic ratios (0.24-0.31) in the surface sediment of the SCS compared to the global fallout value of 0.18 were observed, this is attributed to the input of close-in fallout of the Pacific Proving Ground (PPG) transported by the North Equatorial Current and Kuroshio Current to the northern SCS. The contribution of the PPG derived plutonium in the SCS sediment was estimated to be 39%-78% using a simple two-end member mixing model based on the measured 240Pu/239Pu atomic ratios in the sediment. Besides the soluble 239,240Pu level in seawater, load of suspended particulate matter from the river runoff and biological debris, hydrographic and hydrodynamic conditions are key parameters influencing the deposition process of plutonium to the sediment.

Deposition

Plutonium-240

10.1016/j.envpol.2022.118846

Cite

Citations (14)

233U/236U signature allows to distinguish environmental emissions of civil nuclear industry from weapons fallout

Nature Communications (2020)

Karin Hain Peter Steier M.B. Froehlich Robin Golser Xiaolin Hou

Abstract Isotopic ratios of radioactive releases into the environment are useful signatures for contamination source assessment. Uranium is known to behave conservatively in sea water so that a ratio of uranium trace isotopes may serve as a superior oceanographic tracer. Here we present data on the atomic $$^{233}$$ 233 U/ $$^{236}$$ 236 U ratio analyzed in representative environmental samples finding ratios of (0.1–3.7) $$\cdot$$ ⋅ 10 $$^{-2}$$ −2 . The ratios detected in compartments of the environment affected by releases of nuclear power production or by weapons fallout differ by one order of magnitude. Significant amounts of $$^{233}$$ 233 U were only released in nuclear weapons fallout, either produced by fast neutron reactions or directly by $$^{233}$$ 233 U-fueled devices. This makes the $$^{233}$$ 233 U/ $$^{236}$$ 236 U ratio a promising new fingerprint for radioactive emissions. Our findings indicate a higher release of $$^{233}$$ 233 U by nuclear weapons tests before the maximum of global fallout in 1963, setting constraints on the design of the nuclear weapons employed.

10.1038/s41467-020-15008-2

Cite

Citations (55)

Pre-nuclear level of 129I in Chinese loess-paleosol sections: A search for the natural 129I level for dating in terrestrial environments

Geochimica et Cosmochimica Acta (2018)

Yukun Fan Weijian Zhou Xiaolin Hou

Paleosol

Loess plateau

10.1016/j.gca.2018.04.014

Cite

Citations (18)

Level and source of 129I of environmental samples in Xi'an region, China