APPLICATION OF CHINA-MADE CHELETING RESIN IN THE ANALYSIS OF SEAWATER I. MEASUREMENT OF THE SPECIES OF HEAVY METALS IN SEAWATER

This article deals with the procedure for determining the exchange capaciiy of the China-made chelating resin CR-1.The exchange capacity of CR-1 resin in H⁺ and Na⁺ forms was measured,and a correlation experiment was made in comparison with the internationally used Chelex-100 resin. The result shows that the exchange capacity of CR-1 is equal to that of Chelex-100. The absorptive characterization of CR-1 to the heavy metals in spa water was tested.The result proves that CR-1 and Chelex-100 have the similar function. Therefore CR-1 can be used to separate the different species of heavy metals. Nine chemical species of heavy metals in seawater were measured by using CR-1 for the first time. The experiment indicates that this method proves accurate and workable.