离子交换－AES法分析茶水中可溶性铁、铜、锰、锌的无机和有机形态

STUDY ON THE ANALYSES OF INORGANIC AND ORGANIC SPECIATION OF Fe,Cu,Mn AND Zn IN AQUEOUS TEA IMMERSING BY ION EXCHANGE-AES

提出了泡茶水中可溶性Ｆｅ、Ｃｕ、Ｍｎ、Ｚｎ的无机和有机形态的分离分析新方法．采用ＸＡＤ－２大孔网状树脂分离、ＡＥＳ多元素检测，研究了树脂的吸附与脱附性能，确定了树脂的最佳实验条件，考察了该方法的精密度和回收率．结果表明：在选定的酸度条件下，该树脂能有效地分离４元素的无机和有机化学形态，该方法应用于几种实际样品分析，获得满意结果．

The analyses of inorganic and organic speciation of Fe,Cu,Mn and Zn in aqueous tea immersing have been studied by ion exchange-AES. The optimum conditions for the saparetion and determination of above mentioned two speciation of four elements are established.The relative standard deviation are 2.7%～7.8%(6 determinations).The recoveries are in the range of 90.5% ～102%. The present mehod has been applied to the analyses of practial samples with good results.