【摘要】 通过研究HS-12树脂吸附腐殖质的影响因素,从吸附动力学和界面化学等方面讨论了其吸附机理,并用此方法提取出海水中的腐殖质;同时用重量法测定了沉积物中腐殖质的含量,对河口沉积物中提取的腐殖质进行了化学表征。研究结果表明:当pH为3时,HS-12树脂对腐殖质的吸附量最大;吸附交换速率主要受粒子扩散控制;吸附前后树脂的等电点发生移动,证明此吸附为特性吸附;腐殖质的化学表征说明重量法提取的沉积物中腐殖质纯度较高,同时证明腐殖质的多种官能团的存在。长江口海区的海水腐殖质浓度平均值为0.280mg/L;沉积物中腐殖质的含量平均值为2748×10-6。更多还原

【Abstract】 In this paper,based on the adsorption kinetic experiments and interfacial chemistry experiments,the adsorption mechanism and the influence factors of adsorption humus by HS-12 resin have been studied.Humus in seawater of Changjiang Estuary is extracted by this method.At the same time,humus in sediments which is measured by weighing method is characterized by UV-VIS and IR spectrum.The results show that the maximum adsorption capacity by using HS-12 resin can be obtained when pH=3;the velocity of exchange is controlled by particle diffusion;the adsorption belongs to a characteristic adsorption because the IEP of the HS-12 resin has been moved.The average concentration of humus in seawater is 0.280mg/L;while in sediments it is 2748×10^-6.更多还原