摘要
本文研究了长江河口水在不同站位的细颗粒泥沙存在下氨氮的降解动力过程，并从阳离子交换容量（ＣＥＣ）以及Ｚｅｔａ电位研究颗粒物的表面性质对氨氮降解的影响。结果表明，Ｚｅｔａ电位与颗粒物表面的凯氮以及氨氮有很好的相关性。而ＣＥＣ越大，颗粒物对硝化细菌的累积量也越大，有利于水体中氨氮的硝化降解作用。长江口南槽附近的颗粒物ＣＥＣ值高于河口上游，氨氮的降解速率最快。
The suspended particulate solids with various values of CEC and Zeta-potential were collected in the Changjiang Estuary in Mar. 1992, and were used to investigate the effect of the transformation of ammonia nitrogen in the Huangpu River waters. The results show that Zeta potential indicates the content of organic and ammonia nitrogen, while CEC predicts the biomass concentration of nitrifiers on the surface of suspended particulate solids. The higher CEC of suspended solids and the more nitrifying bimass, the more nitrification of ammonia nitrogen occurs in river waters.
出处
《华东师范大学学报（自然科学版）》
CAS
CSCD
1994年第3期61-65,共5页
Journal of East China Normal University(Natural Science)
关键词
CEC
ZETA电位
界面化学
氮
迁移
cation exchange capacity (CEC), Zeta-potential,nitrification
