Phosphorus fractions of floodplain sediments and phosphorus exchange on the sediment–water interface in the lower reaches of the Han River in China

Tian, Jian-Ru; Zhou, Peijiang

doi:10.1016/j.ecoleng.2007.01.006

Cited by 35 publications

(21 citation statements)

References 22 publications

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“…In a separate extraction, IP was extracted by HCl and TP was determined by treating the samples at 550°C, followed by HCl extraction (Anshumali and Ramanathan 2007). After the extractions, OP was determined by the difference between TP and IP (ISSCAS 1978;Tian and Zhou 2007). The extract solution was centrifuged at 5000 rpm for 15 min and then filtered through a 0.45-μm GF/C filter membrane.…”

Section: Phosphorus Fractions and Analysismentioning

confidence: 99%

“…Not all of the phosphorus fractions can be released from sediments into water and knowledge of total phosphorus concentration is not always adequate to determine the risk of lake eutrophication associated with its presence in natural waters (Wang et al 2005a;Smith et al 2006;Christos et al 2007). Phosphorus behavior should be more efficiently evaluated based on analysis of phosphorus fractions (Tian and Zhou 2007). Phosphorus fractions of lake sediments can be divided into different fractions such as loosely adsorbed phosphorus (exch-P), phosphorus bound to Al, Fe oxides and hydroxides (Fe/Al-P), calcium-associated phosphorus (Ca-P), inorganic phosphorus (IP), and organic phosphorus (OP) (Liu et al 2005).…”

Section: Introductionmentioning

confidence: 99%

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Phosphate adsorption characteristics at the sediment–water interface and phosphorus fractions in Nansi Lake, China, and its main inflow rivers

2008

Environ Monit Assess

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Phosphorus fractions and phosphate adsorption characteristics of 16 sediments from a shallow freshwater lake (Nansi Lake, China) and its inflow estuaries were investigated. In the present study, the sediment phosphorus is fractionated into exchangeable P (exch-P), Al-P, Fe-P, Ca-P, organic P (OP), inorganic P (IP) and total P (TP). The results show that the total phosphorus (TP) content in the sediments ranges from 571.67 to 1,113.55 mg kg(-1), and calcium bound phosphorus (Ca-P) is the main fraction of IP. The biologically available phosphorus (BAP) ranges from 32.02 to 229.67 mg kg(-1) in the Nansi Lake sediments. Phosphate adsorption on the sediments mainly occurs within 10 h and is completed within 48 h. The content of native adsorbed phosphorus (omega(NAP)) varies greatly from 6.05 to 194.37 mg kg(-1), showing a significant correlation with the total maximal amount of phosphorus adsorbed (TQ(max)). Adsorption efficiency (m) ranges from 574.79 to 3,220.68 l kg(-1) and zero equilibrium phosphorus concentration (C(EPC)) ranges from 0.010 to 0.157 mg l(-1). After the South-to-North Water Diversion Project, the inherent phosphorus present in sediments will be a major threat to the diverted water quality and be a predominant factor determining the trophic status of the lake even if the external load is reduced.

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Section: Phosphorus Fractions and Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Phosphate adsorption characteristics at the sediment–water interface and phosphorus fractions in Nansi Lake, China, and its main inflow rivers

2008

Environ Monit Assess

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“…In a separate extraction, Inorg-P was extracted by HCl and TP was determined by treating the samples at 550 °C, followed by HCl extraction [18]. After the extractions, Org-P was determined by the difference between TP and Inorg-P [19,20].…”

Section: P Forms and Analysismentioning

confidence: 99%

Vertical distribution and release characteristics of phosphorus forms in the sediments from the river inflow area of Dianchi Lake, China

Yang

Xiao

Li³

et al. 2018

Chemical Speciation & Bioavailability

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Columnar sediment samples were collected from five representative river inflow areas of Dianchi Lake, China. The vertical distribution of each form of P were tested. , respectively. The concentration of Ex-P, Fe/Al-P, Ca-P and Org-P all decreased with increasing depth. The release of Ex-P was significantly related to TP whereas the Fe/Al-P was not significantly related to TP in the samples from areas polluted by domestic sewage. However, the release of Ex-P and Fe/Al-P were both significantly related to TP in the samples from areas polluted by phosphate mining and phosphate fertilizer application. The results of equilibrium P concentration (EPC0) analysis showed that P in the sediments of areas A, D and E were the source of P in Dianchi Lake, and the P in the sediments of areas B and C were in relative equilibrium with the overlying water.

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“…In previous studies, phosphorus has been identified as the probable limiting factor for phytoplankton in lakes (Smith et al, 1999;Tian and Zhou, 2007). Thus, one of the main approaches for the restoration of the lake ecosystem is to decrease the concentration of phosphorus in the overlying water column Sediments in surface water bodies are considered as a sink as well as a source for nutrients, and the supply of P from sediments can play a vital role in the eutrophication of surface water bodies (Jin et al, 2013;Huang et al, 2012;Beutel et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

Adsorption of sediment phosphorus by porous ceramic filter media coated with nano-titanium dioxide film

Zeng

Xia

et al. 2014

Ecological Engineering

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Phosphorus fractions of floodplain sediments and phosphorus exchange on the sediment–water interface in the lower reaches of the Han River in China

Cited by 35 publications

References 22 publications

Phosphate adsorption characteristics at the sediment–water interface and phosphorus fractions in Nansi Lake, China, and its main inflow rivers

Phosphate adsorption characteristics at the sediment–water interface and phosphorus fractions in Nansi Lake, China, and its main inflow rivers

Vertical distribution and release characteristics of phosphorus forms in the sediments from the river inflow area of Dianchi Lake, China

Adsorption of sediment phosphorus by porous ceramic filter media coated with nano-titanium dioxide film

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