Phosphorus fractions and its release in the sediments from the shallow lakes in the middle and lower reaches of Yangtze River area in China

Wang, Shengrui; Jin, Xin; Zhao, Haichao; Wu, Fengchang

doi:10.1016/j.colsurfa.2005.08.015

Cited by 132 publications

(87 citation statements)

References 23 publications

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“…A sequential extraction method [27] is used to obtain the geochemical P fractions [28]. The phosphorus present in the samples is divided into loosely adsorbed phosphorus that can be extracted with 1.0 M NH 4 Cl (referred to as NH 4 Cl-P).…”

Section: Measurement and Analysis Of Samplesmentioning

confidence: 99%

Distribution and Environmental Significance of Phosphorus Forms in Riparian Soils and River Sediments of Jianxi Basin, Fujian Province

Ye¹,

Yuan²,

Zhou³

et al. 2017

Pol. J. Environ. Stud.

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Section: Measurement and Analysis Of Samplesmentioning

confidence: 99%

Distribution and Environmental Significance of Phosphorus Forms in Riparian Soils and River Sediments of Jianxi Basin, Fujian Province

Ye¹,

Yuan²,

Zhou³

et al. 2017

Pol. J. Environ. Stud.

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“…This process explains well why Fe-P contents increased gradually in the outflow direction of the river and then decreased after a certain distance. Fe/Al-P is often used as an important indicator of sediment quality (Wang et al, 2006). Active Fe and Al (hydrated) oxides are widely regarded as the main adsorbent for P in natural sediments.…”

mentioning

confidence: 99%

Geochemical characteristics of phosphorus in surface sediments of two major Chinese mariculture areas: The Laizhou Bay and the coastal waters of the Zhangzi Island

Zhuang¹,

Gao²,

Zhang³

et al. 2014

Marine Pollution Bulletin

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a b s t r a c tPhosphorus (P) in surface sediments of the Laizhou Bay (LB) and the coastal waters around the Zhangzi Island (ZI) was analyzed. Six forms of P were separated -exchangeable or loosely sorbed P (Ads-P), aluminum-bound P (Al-P), iron-bound P (Fe-P), authigenic apatite plus CaCO 3 -bound P plus biogenic apatite (Ca-P), detrital apatite plus other inorganic P (De-P) and organic P (OP). The average contents of P in the LB were in the order: De-P > OP > Ca-P > Fe-P > Ads-P > Al-P; in the ZI, the corresponding order was De-P > OP > Fe-P > Ca-P > Ads-P > Al-P. Due to the high nutrient loadings from the surrounding rivers, TP contents in sediments of the LB were higher than in those of the ZI. The potential bio-available P (Ads-P and OP) accounted for 14.7% and 24.2% of TP in sediments of the LB and the ZI, respectively.Ó 2014 Elsevier Ltd. All rights reserved.As an important biogenic element in the ocean, phosphorus (P) directly affects the primary productivity of the ocean and has a significant impact on the marine carbon cycle (Lui and Chen, 2011;Yu et al., 2012); P is also directly related to the global climate and environmental changes (Krom et al., 2004). Hecky and Kilham (1988) pointed out that P might be the element which controlled the global marine biological productivity during a long geologic time scale (>1000 years). As an important reservoir of P in marine environment, sediment not only has a buffering effect on the P content in the overlying water, but also is an important source of P in seawater (Giblin et al., 1997;Zabel et al., 1998). Fisher et al. (1982) reported that sediments provided 28-35% of P needed in the primary productivity of coastal marine ecosystems.Both organic and inorganic forms of P are present in marine sediments. Inorganic forms of P may be adsorbed onto the surfaces of minerals, or be bound to aluminum, iron, or calcium (Föllmi, 1996;Benitez-Nelson, 2000;Łukawska-Matuszewska and Bolałek, 2008;Song, 2010). The binding forms of P in sediments have major influences on transportation, degradation, and the ultimate fate of P in marine ecosystems. Only certain forms of P can be transformed into bio-available ones after being affected by physical, chemical and biological factors, including desorption, dissolution and reduction processes (Song, 2010). After that, the bio-available forms of P are released into the overlying water. These certain forms of P become important factors affecting the trophic status of water or causing eutrophication (Eijsink et al., 2000). Therefore, research on the geochemical forms of P in sediments may help researchers understand the dynamic cycle of P in seawater and sediments, such as migration and transformation between sediments and the overlying water, and subsequent diagenesis and other geochemical processes (Zabel et al., 1998;Eijsink et al., 2000).The Laizhou Bay and the surrounding marine area of the Zhangzi Island (hereafter referred to as the Zhangzi Island for short) are important mariculture zones in China, and they are located in the B...

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“…沉积物内源磷的释放受控于众多环境因素 [10][11] , 在不同 pH 值、氧化还原条件、微生物、沉积物扰动状况等物理、化学及生物作用下 [12] , 表现出不同的迁移转化特征.其中上覆水的 pH 条件是影响磷迁移转化的重要参数之一 [1,13] . 研究表明, 湖泊水华爆发过程中, 水土界面的 pH 条件发生显著的改变, 从而影响磷在水土界面的生物地球化学循环过程 [14] .…”

Section: J Lake Sci(湖泊科学) 2009 21(5) 664unclassified

“…沉积物磷形态研究方法较多 [3,13,23,26] , Ruban 将沉积物磷形态分为钙结合态磷(HCl-P)、铁结合态磷 (NaOH-P)、无机磷(IP)、有机磷(OP)及总磷(Conc.HCl-P), 这对探讨磷的来源具有良好的指示意义 [2,21] , 已在诸多研究中得到广泛应用 [5,22,27] , 本次实验沉积物分析结果如表 2 所示. 无机磷的提取效率((MgCl 2 -P+ NaOH-P+HCl-P)/IP)在 97%-100.2%之间, 总磷的提取效率((IP+OP)/Conc.HCl-P)在 70%-100.5%之间, 除 pH=2.0 及 pH=11.8 提取效率略低外, 系统误差在较小的范围内(表 3).…”

Section: 沉积物中磷的形态变化unclassified

Characteristic of phosphorus release with the control of pH of sediments from Meiliang Bay, Lake Taihu

Yuan

Shen²,

Liu³

et al. 2009

Journal of Lake Sciences

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The phosphorus stored in the sediments can be released into the overlying water, acting as internal source for lakes. pH is one of the important factors influencing phosphorus release. In this paper, phosphorus fractions and the effect of pH on P release (48h) were investigated for the sediment from Meiliang Bay, Lake Taihu. The pH of the system was controlled with different buffer solutions. The release characteristics of phosphorus were influenced markedly by the pH condition. Specifically, acidity (pH=2.0) and alkalinity (pH=9.5, 11.8) conditions were more beneficial for phosphorus release than the neutral pH(pH=7.2) condition. The amount of phosphorus released from the sediments under alkalinity conditions (pH=9.5, 11.8) was about 4 folds than that in the acidity (pH=2.0, 4.6) and neutral condition when the release of phosphorus tended to be stable(14h). There had been distinct difference for the phosphorus speciation in the sediments of different simulation system. With the analysis to the phosphorus speciation of sediments after release experiment, it can be concluded that acidic condition can enhance Ca-bound phosphorus release, whereas alkaline condition can promote the release of Fe-bound phosphorus significantly. Fe-bound phosphorus is the key form of phosphorus release in Meiliang Bay of Lake Taihu. pH value is an important mechanism of influencing phosphorus content and eutrophication.

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Phosphorus fractions and its release in the sediments from the shallow lakes in the middle and lower reaches of Yangtze River area in China

Cited by 132 publications

References 23 publications

Distribution and Environmental Significance of Phosphorus Forms in Riparian Soils and River Sediments of Jianxi Basin, Fujian Province

Distribution and Environmental Significance of Phosphorus Forms in Riparian Soils and River Sediments of Jianxi Basin, Fujian Province

Geochemical characteristics of phosphorus in surface sediments of two major Chinese mariculture areas: The Laizhou Bay and the coastal waters of the Zhangzi Island

Characteristic of phosphorus release with the control of pH of sediments from Meiliang Bay, Lake Taihu

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