首页> 外文期刊>Journal of Environmental Sciences >Phosphorus fractionation and bio-availability in Taihu Lake(China) sediments
【24h】

Phosphorus fractionation and bio-availability in Taihu Lake(China) sediments

机译:太湖(中国)沉积物中磷的分馏和生物利用度

获取原文
获取原文并翻译 | 示例
       

摘要

Typical sediments from Taihu Lake, a meso-to-hypereutrophic lake, were collected and examined on the basis of P-fractionation by sequential extraction scheme. Sedimentary inorganic phosphorus were fractioned into four forms and the rank order according to the mean concentration of P-fractions in Taihu Lake was NaOH-P > BD-P > HCI-P > NH4CI-P. The concentrations of BD-P were linearly correlated with the content of active Fe( R~2 = 0.96). Also, the linear relationship between the sum of BD-P and NaOH-P and the sum of active Fe and active Al content was observed within the six sediments investigated( R~1 = 0.96). Moreover, the bio-available phosphorus (BAP) content was estimated by the sum of NH_4CI-P, BD-P, and NaOH-P, viz. BAP = NH_4CI-P + NaOH-P + BD-P. In Taihu Lake, the BAP contents are ranging from 0.10 mg/g dw to 1.25 mg/g dw, and average 0.40 mg/g dw for all sediment samples. The relative contributions of BAP to total sedimentary phosphorus (TP) and inorganic sedimentary phosphorus (IP) range from 18.67 percent to 50.79 percent (33.61 percent on average) and from 52.82 percent to 82.09 percent(67.81percent on average), respectively.
机译:收集了中-富营养化太湖太湖的典型沉积物,并在P分馏的基础上采用顺序萃取方案对其进行了检查。太湖沉积物中的无机磷分为4种形式,根据P馏分的平均浓度排序为NaOH-P> BD-P> HCI-P> NH4Cl-P。 BD-P的浓度与活性铁的含量呈线性关系(R〜2 = 0.96)。此外,在所研究的六种沉积物中,BD-P和NaOH-P的总和与活性Fe和活性Al的总含量之间存在线性关系(R〜1 = 0.96)。此外,通过NH_4CI-P,BD-P和NaOH-P的总和估算生物利用磷(BAP)的含量。 BAP = NH_4Cl-P + NaOH-P + BD-P。在太湖,BAP含量范围为0.10 mg / g dw至1.25 mg / g dw,所有沉积物样品的平均BAP含量为0.40 mg / g dw。 BAP对总沉积磷(TP)和无机沉积磷(IP)的相对贡献分别为18.67%至50.79%(平均33.61%)和52.82%至82.09%(平均67.81%)。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号