全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...
湖泊科学  2009 

模拟水体pH控制条件下太湖梅梁湾沉积物中磷的释放特征

DOI: 10.18307/2009.0508

Keywords: 沉积物,磷释放,磷形态,pH,太湖

Full-Text   Cite this paper   Add to My Lib

Abstract:

采用缓冲溶液控制水体pH值,模拟研究了太湖梅梁湾沉积物扰动悬浮状态下水体磷的释放规律(48h),分析了实验前后沉积物中磷的赋存形态组成及变化特征.结果表明,pH条件对沉积物磷释放具有显著影响,强酸性(pH=2.0)及碱性(pH=9.5,11.8)条件下皆利于磷的释放,但强酸性水体磷含量随时间逐渐降低,而碱性水体磷呈持续释放状态;中性条件(pH=7.2)磷的释放释放作用不明显.磷释放达到稳定状态(14h)后,碱性条件下(pH=9.5,11.8)磷释放量为酸性(pH=2.0,4.6)及中性(pH=7.2)条件下的4倍以上.通过对比释放前、后沉积物中磷的形态组成可知,酸性条件主要为钙结合态磷的释放;碱性条件主要是铁结合态磷释放,部分可发生再沉淀,转化为钙结合态磷.研究表明,梅梁湾沉积物中铁结合态磷的解析是沉积物磷的主要释放源,是水体内源磷增加的重要贡献者.

References

[1]  Herman G, Nishri A, Berman T. A long-term prediction model for total phosphorus concentrations in Lake Kinneret. WaterResearch, 1989, 23(1): 61-66.
[2]  Ruban V, Brigault S, Demare D et al. An investigation of the origin and mobility of phosphorus in freshwater sediments fromBort-Les-Orgues Reservoir, France. Journal of Environmental Monitoring, 1999, 1: 403-407.
[3]  Jin XC, Wang SR, Pang Y et al. Phosphorus fractions and the effect of pH on the phosphorus release of the sediments fromdifferent trophic areas in Taihu Lake, China. Environmental Pollution, 2006, 139: 288-295.
[4]  范成新, 羊向东, 史龙新等. 江苏湖泊富营养化特征、成因及解决途径. 长江流域资源与环境, 2005, 14(2): 218-223.
[5]  Gao L, Zhou JM, Yang H et al. Phosphosrus fractions in sediment profiles and their potential contributions to eutrophication inDianchi lake. Environmental Geology, 2005, 48: 835-844.
[6]  Wang SR, Jin XC, Zhao HH et al. Phosphorus fractions and its release in the sediments from the shallow lakes in the middleand lower reaches of Yangtze River area in China. Colloids and Surfaces A:Physicochemical and Engineering Aspects, 2006,273(1-3): 109-116.
[7]  Selig U. Particle size-related phosphate binding and P release at the sediment-water interface in a shallow German lake.Hydrobiologia, 2003, 492: 107-118.
[8]  黄清辉, 王 磊, 王子健. 中国湖泊水域中磷形态转化及其潜在生态效应研究动态. 湖泊科学, 2006, 18(3): 199-206.
[9]  Hieltjes AHM, Lambertus L. Fractionation of inorganic phosphates in calcareous sediments. Journal of Environmental Quality,1980, 9: 405-407.
[10]  Kim LH, Choi E, Stenstrom MK. Sediment characteristics, phosphorus types and phosphorus release rates between river andlake sediments. Chemosphere, 2003, 50: 53-61.
[11]  House WA, Denison FH. Factors influencing the measurement of equilibrium phosphate concentrations in river sediments.Water Research, 2000, 34(4): 1187-1200.
[12]  Hisashi J. Fractionation of phosphorus and releasable traction in sediment mud of Osaka Bay. Bull Jap Soc Sci Fish, 1983,49(3): 447-454.
[13]  王圣瑞, 赵海超, 周小宁等. 五里湖与贡湖不同粒径沉积物中有机质、总氮和磷形态分布研究. 环境科学研究, 2004,17(增刊): 11-14.
[14]  Rydin E. Potentially mobile phosphorus in lake Erken sediment. Water Research, 2000, 34(7): 2037-2042.
[15]  Ruban V, López-Sánchez JF, Pardo P et al. Harmonized protocol and certified reference material for the determination ofextractable contents of phosphorus in freshwater sediments-A synthesis of recent works. Fresenius J Anal Chem, 2001, 370:224-228.
[16]  Lijklema L, Koelmans AA, Portielje R. Water quality impacts of sediment pollution and the role of early diagenesis. WaterScience and Technology, 1993, 28: 1-12.
[17]  朱广伟. 太湖富营养化现状及原因分析. 湖泊科学, 2008, 20(l): 21-26.
[18]  汪家权, 孙亚敏, 钱家忠等. 巢湖底泥磷的释放模拟实验研究. 环境科学学报, 2002, 22(6): 738-742.
[19]  Pettersson K. Phosphorus characteristics of settling and suspended particles in Lake Erken. The Science of the TotalEnvironment, 2001, 266: 79-86.
[20]  Ullman WJ, Sandstrom MW. Dissolved nutrient fluxes from the nearshore sediments of Bowling Green Bay, central GreatBarrier Reef Lagoon (Australia). Estuarine, Coastal and Shelf Science, 1987, 24: 289-303.
[21]  Bostr?m B, Andersen JM. Fleischer S et al. Exchange of phosphorus across the sediment-water interface. Hydrobiologia, 1988,170: 229-244.
[22]  Jensen HS, Andersen F?. Importance of temperature, nitrate,and pH for phosphate release from aerobic sediments of fourshallow Eutrophic lakes. Limnology & Oceanography, 1992, 37(3): 577-589.
[23]  范成新, 张 路, 秦伯强等. 风浪作用下太湖悬浮态颗粒物中磷的动态释放估算. 中国科学(D 辑), 2003, 33(8): 760-768.
[24]  秦伯强, 胡维平, 高 光. 太湖沉积物悬浮的动力机制及内源释放的概念性模型. 科学通报, 2003, 48(17): 1822-1831.
[25]  Hirota J, Szyper JP. Separation of total particulate carbon into inorganic and organic components. Limnology & Oceanography,1975, 20(5): 896-900.
[26]  更多...
[27]  Ruban V, López-Sánchez JF, Pardo P et al. Selection and evaluation of sequential extraction procedures for the determination ofphosphorus forms in lake sediment. Journal of Environmental Monitoring, 1999, 1: 51-56.
[28]  Pardo P, López-Sánchez JF, Rauret G. Characterisation, validation and comparison of three methods for the extraction ofphosphate from sediments. Analytica Chimica Acta, 1998, 376: 183-195.
[29]  金相灿, 屠清瑛. 湖泊富营养化调查规范(第二版). 北京: 中国环境科学出版社, 1990.
[30]  Nur R, Bates MH. The effects of pH on the aluminum, iron and calcium phosphate fractions of lake sediments. Water Research,1979, 13: 813-815.
[31]  王晓蓉, 华兆哲, 徐 菱等. 环境条件变化对太湖沉积物磷释放的影响. 环境化学, 1996, 15(1): 15-19.
[32]  黄清辉, 王东红, 王春霞等. 太湖梅梁湾和五里湖沉积物磷形态的垂向变化. 中国环境科学, 2004, 24(2): 147-150.
[33]  焦念志. 关于沉积物释磷问题的研究. 海洋湖沼通报, 1989, 2: 80-84.
[34]  Jensen HS, Thamdrup B. Iron-bound phosphorus in marine sediments as measured by bicarbonate-dithionite extraction.Hydrobiologia, 1993, 253: 47-59.
[35]  张 路, 范成新, 池俏俏等. 太湖及其主要入湖河流沉积磷形态分布研究. 地球化学, 2004, 33(4): 423-432.
[36]  孙顺才, 黄漪平. 太湖. 北京: 海洋出版社, 1993.

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133