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利用一步凝胶法合成了钙型腐植酸树脂，用自制树脂装柱，控制柱平衡液的ｐＨ为５～６并以０．０１ｍｏｌ／ＬＨＣｌ为洗脱液，使Ｃａ２＋、Ｍｇ２＋离子与其它１２种离子定量分离。可应用于铝合金中常量及微量镁的测定，回收率可达９８．６％～１０４％。该法分离效率高，选择性好
Calcium-type humic acid resin was synthesized by one-step gel method. The resin was packed with self-made resin, and the pH of balance solution was controlled to 5-6 with 0.01mol / LHCl as eluent to separate Ca2 +, Mg2 + ions from other 12 Quantitative ion separation. It can be applied to the determination of trace and trace magnesium in aluminum alloy with the recovery rate up to 98.6% ~ 104%. The method of separation efficiency, good selectivity