Photo-oxidation of Sb(III) in the seawater by marine phytoplankton-transition metals-light system

CORC > 厦门大学 > 海洋环境－已发表论文

	Photo-oxidation of Sb(III) in the seawater by marine phytoplankton-transition metals-light system
	Li, S. X. ; Zheng, F. Y. ; Hong, H. S. ; Deng, N. S. ; Zhou, X. Y. ; Hong HS(洪华生)
刊名	http://dx.doi.org/10.1016/j.chemosphere.2006.04.017
	2006-09
关键词	DISSOLVED ORGANIC-MATTER HYDROXYL RADICALS ATMOSPHERIC WATER NATURAL-WATERS SUPEROXIDE ANTIMONY IRON KINETICS ACID PHOTOPRODUCTION
英文摘要	The photo-oxidation of Sb(111) to Sb(V) by marine microalgae (diatom, green and red algae) with or without the presence of transition metals (Fe(111), Cu(II) and Mn(II)). The influence of marine phytoplankton on the photochemistry of antimony was confirmed for the first time. The conversion ratio of Sb(111) to Sb(V) increased with increasing algae concentration and irradiation time. Different species of marine phytoplankton were found to have different photo-oxidizing abilities. The photochemical redox of transition metals could induce the species transformation of antimony. After photo-induced oxidation by marine phytoplankton and transition metals, the ratio of Sb(V) to Sb(111) was in the range of 1.07-5.48 for six algae (Tetraselmis levis, Chlorella autotrophica, Nannochloropsis sp., Tetraselmis subcordiformis, Phaeodactylum tricornutum, and Porphyridium purpureum), and only 0.92 for Dunaliella salina. The distribution of antimony in the sunlit surface seawater was greatly affected by combined effects of marine phytoplankton (main contributor) and transition metals; both synergistic and antagonistic effects were observed. The results provided further insights into the distribution of Sb(111) and Sb(V) and the biogeochemical cycle of antimony, and have significant implications for the risk assessment of antimony in the sunlit surface seawater. (c) 2006 Elsevier Ltd. All rights reserved.
语种	英语
内容类型	期刊论文
源URL	[http://dspace.xmu.edu.cn/handle/2288/60394]
专题	海洋环境－已发表论文
推荐引用方式 GB/T 7714	Li, S. X.,Zheng, F. Y.,Hong, H. S.,et al. Photo-oxidation of Sb(III) in the seawater by marine phytoplankton-transition metals-light system[J]. http://dx.doi.org/10.1016/j.chemosphere.2006.04.017,2006.
APA	Li, S. X.,Zheng, F. Y.,Hong, H. S.,Deng, N. S.,Zhou, X. Y.,&洪华生.(2006).Photo-oxidation of Sb(III) in the seawater by marine phytoplankton-transition metals-light system.http://dx.doi.org/10.1016/j.chemosphere.2006.04.017.
MLA	Li, S. X.,et al."Photo-oxidation of Sb(III) in the seawater by marine phytoplankton-transition metals-light system".http://dx.doi.org/10.1016/j.chemosphere.2006.04.017 (2006).