摘要
实验研究ＮａＣ１ 和海水介质中离子强度、盐度对微量金属铜与水合氧化物针铁矿相互作用的影响。结果表明：介质的离子强度、盐度对交换率、交换量有促进作用，随介质的离子强度、盐度的增加，交换率—ｐＨ 曲线向左移动，交换等温线向上移动；比较ＮａＣｌＯ４ 、ＮａＣｌ 和海水三种介质中的交换率和交换量，其大小顺序为：ＮａＣｌＯ４ ＞ ＮａＣｌ＞ 海水，表明在ＮａＣｌ 水溶液和海水中，铜与介质之间存在络合作用；等温线的类型不随介质浓度而变化，离子强度、盐度对相互作用机理不产生影响。
The effects of ionic strength and salinity on the exchange ratio E% pH curves and isotherms of copper geothite system in NaC1 and seawater media are studied. The results show that the ionic strength and salinity can change the exchange ratio and exchange quantity, the E%—pH curves shift letwards and the isotherms shift upwards as ionic strength or salinity of the media is NaC1O 4>NaC1>seawater, which indicates that there is a complexation effect in NaC1 and seawater. The ionic strength can change the location of isotherms, but it does not change the isotherm classification. The results can be applied to ocean geochemistry and are of practical significance for protecting the ocean environment against pollution.
出处
《中国海洋大学学报（自然科学版）》
CAS
CSCD
1999年第S1期129-134,共6页
Periodical of Ocean University of China
