气候变化领域集成服务门户(CCPortal): Iron mineralogy and speciation of sediment iron-bearing minerals in mangrove forest: Case study of Zhangjiang estuary; China

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DOI	10.1016/j.marpolbul.2019.110800
	Iron mineralogy and speciation of sediment iron-bearing minerals in mangrove forest: Case study of Zhangjiang estuary; China
	Yang D.; Liu J.; Zhao W.; Huang Q.; Xue L.; Yan C.; Lu H.
发表日期	2020
ISSN	0025326X
卷号	151
英文摘要	Few investigations of iron speciation exist in intertidal conditions with little attention given to understanding the geochemical behavior of Fe3+–Fe2+ and its biogeochemical processes. Here, one sediment core was collected in Yunxiao mangrove forests, Zhangjiang estuary, China and iron mineralogy was determined by magnetic methods and Mössbauer spectroscopy. Changes in magnetic susceptibility, susceptibility of anhysteretic remanent magnetization, and saturation isothermal remanent magnetization were linked to changes of pseudo-single domain soft coercive components with minor antiferromagnetic fractions and the presence of minimal concentrations of superparamagnetic particles was confirmed by the no frequency dependent of AC magnetization. A positive correlation between L-ratio and hard isothermal remanent magnetization is congruent with the distribution of high-coercivity antiferromagnetic minerals. At 295 K, the Mössbauer spectrum of specimens was well fitted with a single magnetic sextet, hematite and two magnetic doublets, paramagnetic Fe2+ and paramagnetic Fe3+. The usefulness of magnetic data and Mössbauer spectroscopy could offer valuable analytical tools for tracking changes of iron speciation and phase in the intertidal conditions. © 2019 Elsevier Ltd
英文关键词	Diagenesis; Magnetic mineralogy; Magnetization; Mössbauer spectroscopy
语种	英语
scopus关键词	Antiferromagnetism; Coercive force; Forestry; Hematite; Isotherms; Magnetic susceptibility; Magnetization; Paramagnetism; Anhysteretic remanent magnetizations; Biogeochemical process; Diagenesis; Isothermal remanent magnetization; Magnetic mineralogy; Saturation isothermal remanent magnetizations; Ssbauer spectroscopies; Superparamagnetic particles; Saturation magnetization; iron; mineral; concentration (composition); estuarine pollution; iron; mangrove; Mossbauer spectroscopy; pollution effect; pollution exposure; remanent magnetization; speciation (chemistry); water quality; Article; China; concentration (parameter); correlational study; environmental exposure; environmental temperature; estuary; isotherm; magnetism; mangrove; Mossbauer spectroscopy; sediment; environmental monitoring; wetland; China; Guangdong; Zhanjiang Mangrove National Nature Reserve; China; Environmental Monitoring; Estuaries; Iron; Minerals; Wetlands
来源期刊	Marine Pollution Bulletin
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/149258
作者单位	Key Laboratory of Coastal and Wetland Ecosystem, Xiamen University, Xiamen, 361102, China; State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen, 361102, China
推荐引用方式 GB/T 7714	Yang D.,Liu J.,Zhao W.,et al. Iron mineralogy and speciation of sediment iron-bearing minerals in mangrove forest: Case study of Zhangjiang estuary; China[J],2020,151.
APA	Yang D..,Liu J..,Zhao W..,Huang Q..,Xue L..,...&Lu H..(2020).Iron mineralogy and speciation of sediment iron-bearing minerals in mangrove forest: Case study of Zhangjiang estuary; China.Marine Pollution Bulletin,151.
MLA	Yang D.,et al."Iron mineralogy and speciation of sediment iron-bearing minerals in mangrove forest: Case study of Zhangjiang estuary; China".Marine Pollution Bulletin 151(2020).