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| 应用顶空气相色谱测定纸浆纤维的羧基含量 | |
| 引用本文： | 侯庆喜,柴欣生,朱俊勇. 应用顶空气相色谱测定纸浆纤维的羧基含量[J]. 中国造纸, 2005, 24(9): 5-9 |
| 作者姓名： | 侯庆喜 柴欣生 朱俊勇 |
| 作者单位： | 1. 天津科技大学天津市制浆造纸重点实验室,天津,300222 2. 广西大学,广西南宁,530004;美国佐治亚理工学院造纸科学技术研究院,Alanta,GA30332,USA 3. 美国农业部林业林产品实验室,Madison,WI53726,USA |
| 摘 要： | 报道了一种应用顶空气相色谱测定纸浆纤维羧基含量的方法.用稀盐酸对纸浆进行预处理可以使其羧酸盐转化成羧酸的形式.在封闭的测试瓶内,碳酸氢钠溶液作为反应剂与测试瓶内纤维的羧酸反应生成二氧化碳.通过气相色谱的热导检测器对二氧化碳进行检测,推算出纸浆纤维的羧基含量. |
| 关 键 词： | 羧基 气相色谱 纸浆 |
| 文章编号： | 0254-508X（2005）09-0005-05 |
| 收稿时间： | 2005-03-07 |
Determination of the Carboxyl Groups in Fibers by Headspace Gas Chromatography |
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| HOU Qing-xi,CHAI Xin-sheng,ZHU Jun-yong. Determination of the Carboxyl Groups in Fibers by Headspace Gas Chromatography[J]. China Pulp & Paper, 2005, 24(9): 5-9 | |
| Authors: | HOU Qing-xi CHAI Xin-sheng ZHU Jun-yong |
| Abstract: | This paper reports an improved headspace gas chromatographic method for determination of carboxyl group content in wood fibers. A pretreatment of wood fibers was applied using diluted HCl to convert carboxyl groups to carboxyl acids. The sodium bicarbonate solution reacted with carboxyl acids in the pretreated fibers and released carbon dioxide in a closed testing vial. Through the determination of CO2 by a thermal conductivity detector using gas chromatography, the content of carboxyl groups in fibers can be accurately quantified. The modified process for sample pretreatment introduced in this paper increases reliability and accuracy of the determination. Compared with the traditional titration method, the present method is simple, accurate, rapid and automated. |
| Keywords: | carboxyl groups gas chromatography pulp |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |
