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| 二元复杂混合物组成的定量SEC分析 | |
| 引用本文： | 陈正年,谢鸿峰,杨琥,王治流,程镕时.二元复杂混合物组成的定量SEC分析[J].高分子学报,2007(8):689-692. |
| 作者姓名： | 陈正年 谢鸿峰 杨琥 王治流 程镕时 |
| 作者单位： | 1. 南京大学化学化工学院,介观化学教育部重点实验室,南京,210093;南京工程学院材料工程系,南京,210008 2. 南京大学化学化工学院,介观化学教育部重点实验室,南京,210093 3. 南京大学化学化工学院,介观化学教育部重点实验室,南京,210093;华南理工大学材料学院高分子研究所,广州,510640 |
| 摘 要： | 提供了一种体积排除色谱(SEC)的绝对定量分析方法以解决复杂的二元混合物组成的定量分析问题.首先对传统的SEC数据处理方法作了改进,将示差检测响应信号H(V)除以样品进样质量,得到单位质量的示差折光检测响应分布Hw(V)和累积分布Iw(V),这两个分布与试样的检测响应常数有关.然后将Hw(V)除以总面积,再得到常规的归一化分布F(V).混合物检测响应常数的不同,提供了一种从单独组分的Hw(V)或Iw(V)分布,运用加和计算共混物的Hw(V)或Iw(V)分布,得出二元混合物的组成.运算过程利用最小差方和的枚举计算方法,在一个自行编写的Mathcad程序工作单上进行.应用该方法对一种工业沥青和两种稀释剂配成的二元混合物作了范例分析,得到满意结果. |
| 关 键 词： | 体积排除色谱 绝对定量化 数据处理 二元共混物组成 |
| 修稿时间： | 2007-04-182007-05-13 |
ANALYSIS OF THE COMPOSITION OF COMPLICATED BINARY MIXTURE BY QUANTITATIVE SEC |
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| CHEN Zhengnian,XIE Hongfeng,YANG Hu,WANG Zhiliu,CHENG Rongshi.ANALYSIS OF THE COMPOSITION OF COMPLICATED BINARY MIXTURE BY QUANTITATIVE SEC[J].Acta Polymerica Sinica,2007(8):689-692. | |
| Authors: | CHEN Zhengnian XIE Hongfeng YANG Hu WANG Zhiliu CHENG Rongshi |
| Institution: | 1. Key Laborutory for Mesoscopic Chemistry, Ministry of Education, College of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093; 2. College of Material Science and Engineering, Polymer Institute, South China University of Technology, Guangzhou 510640; 3. Material of Department, Nanjing Technology of Institute, Nanjing 210008 |
| Abstract: | The present paper provides a quantitative size exclusion chromatography(SEC) method based on the principle of absolute quantification of SEC to solve the problem.The conventional data treatment procedure for the D.R.I.signal of SEC H(V) is improved first by dividing it with the injected sample weight and leads to a novel defined weight normalized distribution H-w(V) and its integral I-w(V).These two distributions reflect the response constant of the sample in addition to the conventional relative total area normalized distribution F(V).The difference of the response constants of the mixtures provides a method to compute their composition from the H-w(V) or I-w(V) of its single component by method of summation.The calculations are carried out in a Mathcad worksheet with the principle of least sum square deviation.The method was applied to mixtures of a kind of industrial asphalt and paraffinic diluents as an example and successful results are obtained. |
| Keywords: | Size exclusion chromatography Absolute quantification Data treatment Composition of binary mixture |
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