通过静态头空间气相染色法对技术宁中引起气味的化合物的定量分析,并通过标准加法进行校准
1Suzano Canada, 101-4705 Wayburne Drive, Burnaby, British Columbia, Canada.
Journal of chromatography. A
|May 3, 2025
概括
准确量化素中的气味化合物需要将样品加热到其玻璃过渡温度以上. 这种方法改善了挥发性化学物质的分析,有助于控制工业木加工过程中的气味.
科学领域:
- 化学工程是化学工程的重要组成部分.
- 分析化学 分析化学
- 材料科学 材料科学 材料科学
背景情况:
- 宁的工业用途受到其来自挥发性化合物的气味的阻碍.
- 刚气味的确切分子来源尚未得到充分了解.
- 现有的分析方法难以准确量化素中引起气味的挥发性物质.
研究的目的:
- 开发一种可靠的方法来量化素中的挥发性气味化合物.
- 改进对红素气味的客观分析.
- 支持开发控制素气味的工艺.
主要方法:
- 开发了一种使用标准加法协议的量化程序.
- 使用的静态头空间气色谱/质谱 (GC/MS).
- 确定最佳样本平衡温度 (高于素的玻璃过渡温度).
主要成果:
- 通过精确量化素中的挥发性化合物,可以实现精确的量化.
- 在玻璃过渡温度 (1小时150°C) 以上加热红素对于准确的头部空间分析至关重要.
- 降低平衡温度是可行的,如果木质素是溶解或塑性化.
- 在玻璃过渡温度以下的加热导致不完全的挥发性平衡.
结论:
- 开发的方法增强了对素气味的客观分析.
- 了解挥发性化合物的行为是控制红素气味的关键.
- 这项研究通过解决气味挑战,促进了对红素的价值化.
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