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1引言流动注射分析随着其理论的日趋完善而不断发展，已在绝大部分分析领域得到应用。Ishibashi等推导出了流动注射酸碱滴定的理论公式，本文作者已将其拓展到络合滴定金属离子中。并用Zn-氨三乙酸（NTA）加座唑偶氮间苯二酚（TAR）滴定Cd和Ph的实验验证了公式的正确性。同时试
1 Introduction Flow injection analysis, as its theory is maturing, evolves and has been applied in most analytical fields. Ishibashi et al. Derived the theoretical formula for the flow-injection acid-base titration, which the authors have extended to the complexometric titration of metal ions. The correctness of the formula was verified by the experiments of titration of Cd and Ph with Zn-aminotriacetic acid (NTA) and azaleazonaphthoquinone (TAR). At the same time try