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首页> 外文期刊>Polish Journal of Environmental Studies >Evaluating the Relationship between Phosphorus Bioavailability and Phosphorus Speciation in Sediments from Rural Rivers in the Taihu Lake Area, China
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Evaluating the Relationship between Phosphorus Bioavailability and Phosphorus Speciation in Sediments from Rural Rivers in the Taihu Lake Area, China

机译：太湖地区农村河流沉积物中磷的生物利用度与磷形态的关系

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摘要

The concentrations of different phosphorus (P) species and four kinds of bioavailable P (algae-available P, AAP; Olsen P, OLP; water-soluble P, WSP; and readily desorbable P, RDP) were determined to investigate the relationship between phosphorus bioavailability and phosphorus speciation in sediments from rural rivers in Taihu Lake area, China, using a European Commission "Standards Measurements and Testing Program" protocol and four chemical extraction techniques. The total P and inorganic P concentrations in the sediments were 179-2,293 mg/kg and 137-1,857 mg/kg, respectively. The concentrations of the P species in the sediments followed the order NaOH- extractable P ＞ HCl-extractable P ＞ organic P. The bioavailable P concentrations followed the order AAP (340 mg/kg) ＞ OLP (38.7 mg/kg) ＞ WSP (1.8 mg/kg) ＞ RDP (0.3 mg/kg). Regression analyses showed that there were good correlations between the P species concentrations and the bioavailable P concentrations measured using the four different methods, except for between WSP and the HCl-extractable P concentrations. The OLP concentrations had highly significant correlations with AAP, WSP, RDP and the P species concentrations. The OLP method was found to be most suitable for determining the bioavailability of P species under the prevalent geochemical conditions in the rural river sediments that were analyzed.
机译：确定了不同磷（P）种类和四种生物可利用磷（藻类可利用P，AAP，Olsen P，OLP，水溶性P，WSP和易解吸P，RDP）的浓度以研究磷之间的关系使用欧洲委员会的“标准测量与测试计划”协议和四种化学提取技术，对中国太湖地区农村河流沉积物中的生物利用度和磷形态进行了分析。沉积物中的总磷和无机磷浓度分别为179-2,293 mg / kg和137-1,857 mg / kg。沉积物中P物质的浓度遵循NaOH可萃取P＞ HCl可萃取P＞有机P的顺序。生物有效P浓度遵循AAP（340 mg / kg）＞ OLP（38.7 mg / kg）＞ WSP（ 1.8 mg / kg）＞ RDP（0.3 mg / kg）。回归分析表明，除了WSP和HCl可提取的P浓度之间，使用四种不同的方法测得的P物质浓度与生物有效性P浓度之间具有良好的相关性。 OLP浓度与AAP，WSP，RDP和P物质浓度高度相关。发现OLP方法最适合确定分析的农村河流沉积物在普遍地球化学条件下P物种的生物利用度。

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  • 来源
    《Polish Journal of Environmental Studies》 |2014年第6期|1933-1940|共8页
  • 作者

    Luji Bo; Dejian Wang; Gang Zhang; Can Wang;

  • 作者单位

    Institute of Soil Science, Chinese Academy of Sciences, 71st East Beijing Road, Nanjing, 210008, China,University of Chinese Academy of Sciences, Beijing, 100049, China;

    Institute of Soil Science, Chinese Academy of Sciences, 71st East Beijing Road, Nanjing, 210008, China;

    Institute of Soil Science, Chinese Academy of Sciences, 71st East Beijing Road, Nanjing, 210008, China;

    Institute of Soil Science, Chinese Academy of Sciences, 71st East Beijing Road, Nanjing, 210008, China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    phosphorus speciation; bioavailability; rural rivers; sediment; Taihu Lake area;

    机译：磷形态生物利用度农村河流沉淀;太湖地区;

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