用矩分析法研究流动注射分析中化学反应对试样分散的影响  

Study on the Effect of Chemical Reaction on Dispersion in Flow Injection Analysis by Moment Anaysis

作　　者：吴宁生[1] 周德辉[1] 

机构地区：[1]中国科学技术大学应用化学系

出　　处：《分析测试学报》1995年第6期12-16,共5页Journal of Instrumental Analysis

摘　　要：根据串联釜模型和统计矩分析法，通过实验证实了化学反应对分散度的影响；在同一流路中有化学反应的峰宽和二阶矩均比无化学反应的增大。并证明了二阶矩与１／４峰高处峰宽的平方成线性关系。同时给出了一个计算响应曲线统计矩的简易方法。The effect of chemical reaction on Sample dispersion in flow injection analysis has been verified experimentally on the basis of tanks-in-series model and statistical moment analysis.The peak width and the second moment of the response curve of an injected sample with occuring chemical reaction are greater than those of a sample without chemical reaction in an identical flow system.It has also been shown that the relationship between the second moment and the square of peak width at1/4 height is linear.A simple method for the calculation of statistical moment has been proposed.

关 键 词：流动注射分析 分散度 伽玛分布密度函数 统计矩. 

分 类 号：O657.3[理学—分析化学]