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首页> 外文会议>第二届国际造纸与环境学术会议（The Second International Papermaking Environment Conference）论文集 >The Application of Headspace Solid-Phase Microextraction for Determination of Methanol Contents in Black Liquor
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The Application of Headspace Solid-Phase Microextraction for Determination of Methanol Contents in Black Liquor

机译：顶空固相微萃取在黑液中甲醇含量测定中的应用

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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°C temperature for vapour-liquid equilibrium,30 min gas-liquid equilibrium time,11 min extraction time,280°C 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.
机译：开发了一种名为“顶空固相微萃取气相色谱法”（HS-SPME-GC）的新方法，用于测定非木材制浆黑液中的甲醇含量。该程序基于蒸气-液相平衡的原理。 -SPME技术用于黑液中甲醇的浓缩，然后进行气相色谱（GC）分析。优化了提取条件和色谱条件。提取的最佳条件为：液相温度为60°C时达到平衡。 30分钟气液平衡时间，11分钟萃取时间，280°C解吸温度，5 min解吸时间。黑液中的甲醇回收率为89.64％至102.14％。此外，HS-SPME-GC系统消除了该方法比传统方法具有更高的灵敏度和精密度。研究表明，秸秆苏打-蒽醌（AQ）制浆黑液中的甲醇含量为5.42kg / t odpulp。

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