流动注射分析中样品的分散与载流流速关系的研究

Relationship Between Sample Dispersion and the Flow-rate of Carrier Stream in Flow Injection Analysis

根据串联釜模型,流动注射分析响应曲线的峰高与峰面积、1/4峰高处的峰宽两个因素有关.这两个因素与载流流速的关系分别可以用不同的exp(-q)多项式表示(q是无量纲流速).由于分散度与峰高成反比,分散度随流速的变化关系由此能够很好地得到解释.

From tanks-in-series model, the peak height of a response curve obtained from flow injection analysis is correlated with two terms, the peak area and the peak width at 25% of the height. The relationship between these two terms and the flow-rate of carrier stream can be expressed in different polynominals of exp(-q), respectively, where q is dimension-less flow-rate of the carrier stream. As dispersion varies inversely as the peak height, the variation of the dispersion with the flow-rate can be explained with satisfaction.