The principles and theory of high-speed titrations by flow injection analysis
The principles and theory of high-speed titrations by flow injection analysis
复制标题
流动注射分析高速滴定的原理和理论
DOI：
10.1016/s0003-2670(01)84115-5
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发表时间：
1981
影响因子：
6.2
通讯作者：
E. H. Hansen
中科院分区：
文献类型：
--
作者：
A. Ramsing;J. Ruzicka;E. H. Hansen
在流动注射分析中，在注入样品区和载流子流之间形成的高度可重复的浓度梯度被用于基于测量相同梯度分散点之间的时间跨度的滴定。将实验数据与理论模型进行比较，可以确定单个混合阶段的位置和物理尺寸，在样品区的中等分散情况下，可以在不到30秒的时间内完成整个滴定周期，包括采样和冲洗周期。这种高速滴定技术的能力证明了酸碱，络合滴定和碘滴定程序。
The highly reproducible concentration gradients formed between an injected sample zone and the carrier stream in flow injection analysis are exploited for titrations based on measuring the time span between points of identical gradient dispersion. Comparison of the experimental data with theoretical models, has made it possible to locate the position and physical dimension of a single mixing stage, which at medium dispersion of the sample zone allows the entire titration cycle, including sampling and washout periods, to be completed within less than 30 s. The capability of this high-speed titration technique is demonstrated for acid—base, compleximetric and iodimetric titration procedures.