摘要
A new technique for studying the adsorption kinetics of heavy metals,Pb^2+ and Cu^2+,on variable charge surfaces was established with two selective electrodes and microcomputer control system.Feasibility of the technique,including interference of other ions (mainly Fe^3+ and Al^3+),response time of electrodes,and the pH range of testing,was studied.Comparision with the most widely used miscible displacement technique,which was considered insufficient in studying 30-minute rapid reactions,at present time showed that the new technique was more advantageous in testing in situ,easy to operate,and economic.
A new technique for studying the adsorption kinetics of heavy metals, Pb2+ and Cu2+, on variable charge surfaces was established with two selective electrodes and microcomputer control system. Feasibility of the technique, including interference of other ions (mainly Fe3+ and Al3+), response time of electrodes, and the pH range of testing, was studied. Comparision with the most widely used miscible displacement technique, which was considered insufficient in studying 30-minute rapid reactions, at present time showed that the new technique was more advantageous in testing in situ, easy to operate, and economic.
基金
Project supported by the National Naturai Science Foundation of China
