Sediment characteristics, phosphorus types and phosphorus release rates between river and lake sediments
Sediment characteristics, phosphorus types and phosphorus release rates between river and lake sediments
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DOI：
10.1016/s0045-6535(02)00310-7
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发表时间：
2003-01-01
期刊：
影响因子：
8.8
通讯作者：
Stenstrom, MK
中科院分区：
文献类型：
--
作者：
Kim, LH;Choi, E;Stenstrom, MK
汉江长 469.7 公里，流域面积 26 219 公里(2)，是居住在韩国首尔、江原道和京畿道 2000 万人口的主要饮用水源。沉积物中磷的释放会影响水质，并危及河流的有益利用。这项研究测量了两个支流区域（汉江忠平湖（CPL）和蚕室水坝（JSD）区域）底部沉积物的磷释放量并预测未来的释放量。沉积物样本是在 4 年时间内从蚕室大坝地区的 4 个点和 CPL 的 92 个点采集的。分析了沉积物的总磷、磷的形态以及不同条件下向水柱的释放速率。 CPL 沉积物磷分布为 3-5% 吸附磷 (Ads-P)、15-20% 非磷灰石磷 (NAI-P)、25-30% 磷灰石磷 (A-P) 和 45-57% 残留磷 (R-P)。在JSD地区，磷的分布范围为1-3％Ads-P、22-39％NAI-P、26-40％A-P和30-39％R-P。实验室实验表明，JSD地区磷释放率为每周60至80 mg/m(2)，CPL沉积物中磷释放率为25至40 mg/m(2)周。 (C) 2002 Elsevier Science Ltd. 保留所有权利。
The Han river is 469.7 km long with 26 219-km(2) area watershed, and is the primary drinking water source for the 20 million people that live in Seoul, Kangwon-Do and Kyunggi-Do, Korea. Phosphorus release from sediments impacts water quality, and is endangering the beneficial use of the river. This research measures phosphorus release and predicts future releases from bottom sediments of two tributary areas (Chungpyung Lake (CPL) and Jamsil submerged dam (JSD) area in the Han river). Sediment samples were taken over a 4-year period from four points in the Jamsil dam area and from 92 points in CPL. The sediments were analyzed for total phosphorus, the form of the phosphorus and release rates under different conditions to the water column. Sediment phosphorus distribution from CPL was 3-5% adsorbed-P (Ads-P), 15-20% non-apatite-P (NAI-P), 25-30% apatite-P (A-P) and 45-57% residual-P (R-P). In the JSD area, the phosphorus distribution ranges were 1-3% Ads-P, 22-39% NAI-P, 26-40% A-P and 30-39% R-P. Laboratory experiments showed that phosphorus release rates from 60 to 80 mg/m(2) week in JSD area and ranged from 25 to 40 mg/m(2) week in CPL sediments. (C) 2002 Elsevier Science Ltd. All rights reserved.