国产螯合离子交换树脂在海水分析中的应用——Ⅰ.海水中重金属的化学形态的测定
APPLICATION OF CHINA-MADE CHELETING RESIN IN THE ANALYSIS OF SEAWATER I. MEASUREMENT OF THE SPECIES OF HEAVY METALS IN SEAWATER
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摘要: 螯合离子交换树脂,具有离子交换和络合反应的特性,有可能从海水中选择地络合吸附微量重金属元素.1968年,Riley等[1]首先引用Chelex-100螯合离子交换树脂,进行海水中29种金属离子的吸附与解吸试验.Abstract: 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.
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Rilcy, T.Y. et al.,Anal.Chim. Acta, 40(1968), 497. 周锦帆,环境科学,1980, 1, 57. Florence, T.M.,Batley, G.E., Talania,22(1976), 2, 201. Florence, T.M.,Batley, G.E.,Marine Chem.,4(1976), 247;Anal Lett,9(1976), 379:Water Research, 11(1977), 8, 681. Rona, E. et al.,Limnol.&Oceanogr.,1962, 7, 201. Slowey, J.F.,et al.,Geochim. Cosmochim. Acta, 35(1971), 121. Samulson, O.,Ion Exchange Separaetions in Analytical Chemistry, Johu Wiley and Sons, New York. 34(1963), 288-291. -
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