气候变化领域集成服务门户(CCPortal): Redox-dependent phosphorus burial and regeneration in an offshore sulfidic sediment core in North Yellow Sea; China

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DOI	10.1016/j.marpolbul.2019.110582
	Redox-dependent phosphorus burial and regeneration in an offshore sulfidic sediment core in North Yellow Sea; China
	Zhao G.; Sheng Y.; Jiang M.; Yin X.
发表日期	2019
ISSN	0025326X
卷号	149
英文摘要	Phosphorus (P) pollution can trigger severe marine eutrophication, which further leads to harmful algal blooms, and a deterioration of sea water quality. The P burial and regeneration in offshore sediments can directly affect the eutrophication levels of estuarine and coastal ecosystems. Although many researches on redox-dependent P burial and regeneration were studied, such process in the presence of silicate is still poorly understood, and the effects of pyrite formation on organic P (OP) burial and regeneration also remain unclear. In this study, a sulfidic sediment core was collected in the offshore of an estuary in the north Yellow Sea, China. Results indicated that indigenous biological input was found to be the primary source of organic matter in upper sediments. The regenerated P under reducing conditions was dominated by labile Fe[sbnd]P and OP. The PO43− released from Fe[sbnd]P and OP that could be captured by Al/Fe/Mn (oxyhydr) oxides in surface sediments and Ca minerals in deep sediments. Ca[sbnd]P, Al[sbnd]P, unreactive Al/Fe-Si-P and some stable metal chelated OP were the main burial P fractions. Sulfate reduction and formation of insoluble metal sulfides including the pyrite promoted OP decomposition by anaerobic decomposition, removing metal ions from the “metal-OP” chelates and restoring the phosphatase activity. © 2019 Elsevier Ltd
英文关键词	31P NMR; Marine sediments; P sequential extraction; Redox; Sulfide
语种	英语
scopus关键词	Aluminum compounds; Chelation; Deterioration; Ecosystems; Eutrophication; Manganese compounds; Marine pollution; Metal ions; Metals; Offshore oil well production; Pyrites; Seawater; Silicates; Submarine geology; Sulfur compounds; Water quality; 31P-NMR; Marine sediments; Redox; Sequential extraction; Sulfide; Sediments; aluminum; calcium; iron; manganese; organic matter; phosphorus; silicon; sulfate; sulfide; iron; mineral; oxide; phosphate; phosphorus; pyrite; sulfate; sulfide; algal bloom; decomposition; eutrophication; extraction method; marine sediment; nuclear magnetic resonance; phosphorus; redox conditions; sediment core; sediment pollution; sulfide; Article; chemical analysis; concentration (parameter); controlled study; energy dispersive X ray spectroscopy; fractionation; freeze drying; geochemistry; inductively coupled plasma mass spectrometry; limit of quantitation; oxidation reduction potential; phosphorus nuclear magnetic resonance; sediment; chemistry; China; environmental monitoring; estuary; eutrophication; metabolism; oxidation reduction reaction; Pacific Ocean; procedures; sediment; water pollutant; Pacific Ocean; Yellow Sea; algae; China; Environmental Monitoring; Estuaries; Eutrophication; Geologic Sediments; Iron; Minerals; Oxidation-Reduction; Oxides; Pacific Ocean; Phosphates; Phosphorus; Sulfates; Sulfides; Water Pollutants, Chemical
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/149520
作者单位	Research Center for Coastal Environment Engineering Technology of Shandong Province, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, China; University of Chinese Academy of Sciences, Beijing, China
推荐引用方式 GB/T 7714	Zhao G.,Sheng Y.,Jiang M.,et al. Redox-dependent phosphorus burial and regeneration in an offshore sulfidic sediment core in North Yellow Sea; China[J],2019,149.
APA	Zhao G.,Sheng Y.,Jiang M.,&Yin X..(2019).Redox-dependent phosphorus burial and regeneration in an offshore sulfidic sediment core in North Yellow Sea; China.Marine Pollution Bulletin,149.
MLA	Zhao G.,et al."Redox-dependent phosphorus burial and regeneration in an offshore sulfidic sediment core in North Yellow Sea; China".Marine Pollution Bulletin 149(2019).