Jiang Xia, Wang Qiu-juan, Wang Shu-hang, Jin Xiang-can, Li Yong-feng
Chinese Research Academy of Environmental Sciences, Beijing 100012, China.
Huan Jing Ke Xue. 2011 May;32(5):1285-91.
The adsorption isotherms curves of 90 simples were studied in Taihu Lake through the experiment of adsorption/desorption. And the relation between the equilibrium concentrations, NAP, adsorption efficiency and corresponding parameter in interstitial water and sediment has been analyzed, in order to analyze the "source" and "collection" of Taihu. The results showed that the isotherms curves of nitrogen and phosphorus in the sediment had significant correlations in the range of the concentrations of experiment. The average equilibrium concentrations of nitrogen and phosphorus are 1.10 mg/L and 0.11 mg/L respectively. The average of NAP of nitrogen and phosphorus are 23.55 mg/kg and 11.72 mg/kg respectively. The NAP of nitrogen and phosphorus are higher in the area of serious pollution. The average adsorption efficiency of nitrogen and phosphorus are 23.14 L/kg and 102.09 L/kg respectively. Significant correlations were found between the equilibrium concentrations of adsorption/desorption of nitrogen and phosphous and corresponding parameter in interstitial water or sediment. Overall the sediment is the "source" of the nitrogen and phosphorus.
通过吸附/解吸实验研究了太湖90个样品的吸附等温线曲线。分析了间隙水和沉积物中平衡浓度、非吸附态磷（NAP）、吸附效率与相应参数之间的关系，以分析太湖的“源”和“汇”。结果表明，在实验浓度范围内，沉积物中氮和磷的等温线曲线具有显著相关性。氮和磷的平均平衡浓度分别为1.10mg/L和0.11mg/L。氮和磷的NAP平均值分别为23.55mg/kg和11.72mg/kg。在污染严重的区域，氮和磷的NAP较高。氮和磷的平均吸附效率分别为23.14L/kg和102.09L/kg。氮和磷吸附/解吸的平衡浓度与间隙水或沉积物中的相应参数之间存在显著相关性。总体而言，沉积物是氮和磷的“源”。
