流动注射分析中提高线性范围的一种方法  

An Approach for Improving Linear Range in Flow Injection Analysis

作　　者：吴国胜[1] 吴宁生[1] 

机构地区：[1]中国科学技术大学化学系

出　　处：《分析试验室》1998年第1期76-76,共1页Chinese Journal of Analysis Laboratory

摘　　要：经证明，在流动注射分析中使用光度检测器和进样体积一定时，下式成立：ｃ＝ａ＋ｂｌｎ（１－ｈ／ｈ０）。式中ｃ为试样浓度，ａ和ｂ为与实验条件有关的系数，ｈ和ｈ０分别为试样峰和定态时的峰高。ｈ０几乎不随浓度增加而变化。应用此式可提高测定的线性范围，进行较高浓度试样的测定。It has been verified that in flow injection analysis with spectrophotometric detection and constant injected sample volume,the following expression is valid. c=a+b ln(1- h/h 0)。 where c is the sample concentration, a and b are coefficients which depend on experimental conditions. h is the sample peak height, h o is the steady state height which is almost unchanged with increasing sample concentration.Using this expression,the applicable concentration range can be enlarged,and the sample with higher concentration can be analyzed

关 键 词：流动注射分析 光度检测 线性范围 

分 类 号：O657.3[理学—分析化学]