The Application of Headspace Solid-Phase Microextraction for Determination of Methanol Contents in Black Liquor
A new method named headspace solid-phase microextraction gas chromatography(HS-SPME-GC)was developed to determine methanol contents in non-wood pulping black liquor.The procedure was based on the principle of vapour-liquid phase equilibrium.The HS-SPME technique was used to concentrate the methanol in the black liquor,prior to gas chromatographic(GC)analysis.The extraction and chromatopraphic conditions were optimized.The optimum conditions for extraction were as follows: 60℃ temperature for vapour-liquid equilibrium,30 min gas-liquid equilibrium time,11 min extraction time,280℃ desorption temperature,5 min desorption time.The methanol recovery ratio in the black liquor was 89.64％ to 102.14％.Furthermore,the HS-SPME-GC system eliminated the need to deal with multiple sample injections.The method has better sensitivity and precision than the traditional method.The study revealed that the methanol content in Soda-Anthraquinone(AQ)pulping black liquor of straw was 5.42kg/t o.d.pulp.
methanol black liquor HS-SPME GC
HAIXUE LIU QIUJUAN LIU ZHIYAN YANG HONGJIE ZHANG SIYANG ZHANG
Tianjin Key Laboratory of Pulp and Paper,Tianjin University of Science and Technology,Tianjin,300457,P.R.China
国际会议
第二届国际造纸与环境学术会议(The Second International Papermaking & Environment Conference)
天津
英文
403-406
2008-05-14（万方平台首次上网日期，不代表论文的发表时间）