Gas Chromatographic Determination of Lignin in Sediment Samples Assisted with Microwave Digestion
详细信息
- 责任者：Feng Zhaojun (Second Institute of Oceanography ; State Oceanic Administration ; Hangzhou 310012 ; China) ; Pan Jianming
- 刊名：Rock and Mineral Analysis
- 出版年：2011
- 卷期：30(1)
- 关键词：气相色谱法 ; gas chromatography ; 木质素 ; lignin
- 页码：p.23-26
- 图表：2 illus., 4 tables, 17 refs.
- 分类号：0900
- issnNo：ISSN0254-5357
- isbnNo：CN11-2131/TD
摘要
Sample decomposition method with alkaline CuO oxidation procedure in determination of lignin in sediment samples, firstly developed by Hedges and Ertel, has been improved. Sediment samples were decomposed with oxidative-alkaline CuO in a microwave-assisted digestion system and then lignin monomers were determined by gas chromatography. The factors affecting the oxidative decomposition efficiency of the lignin were investigated. The results indicated that the best decomposition condition was 150 ℃ for 90 minuend the optimized condition, recovery for lignin monomers was 91.4%～108% with average precision of 4.5% RSD.