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本 文详细地 论证了流 动注射络 合滴定的理 论，推导了 使用金属配位 体缓冲溶 液流动注 射络合滴 定的理论计算公式，并用 Ｃｄ Ｎ Ｔ Ａ 和 Ｇａ Ｈ Ｅ Ｄ Ｔ Ａ 分 别加 Ｔ Ａ Ｒ 和邻苯二酚紫作 载流，滴定了金属离 子镉和镓。流动注射络合定滴定镉和镓的实验进一步验证了公式的 正确性和适用性。通过大量的理论和应用实验的数据优化了实验条件，同时也进一步修正了理论公式，使之 与实际的络合反应更加符合。滴定镉和镓的最低检出浓度 分别为 ５．００×－ ６ ｍ ｏｌ／ Ｌ 和 ５．００×１０－ ５ ｍ ｏｌ／ Ｌ，采样频率均为 １８０ 次／ｈ 。试验了共存离子的影响及一些干扰离子的掩蔽。
In this paper, the theory of flow injection complexometric titration is demonstrated in detail, and the theoretical calculation formula for the flow-injection complexometric titration using metal-ligand buffer solution is deduced. Then, T plus N and T A R and catechol violet as carrier flow, titrated metal ions cadmium and gallium. Flow injection complexed titration of cadmium and gallium experiments further verify the correctness and applicability of the formula. Through a large number of theoretical and applied experimental data to optimize the experimental conditions, but also further amended the theoretical formula, so that it is more in line with the actual complexation reaction. The lowest detectable concentrations of cadmium and gallium were 5.00 × -6 mol / L and 5.00 × 10-5 mol / L respectively, and the sampling frequency was 180 times / h. The effect of co-existing ions and the masking of some interfering ions were tested.