对于有机物质的元素组成及其结构性质的TG-MS分析
Lin Lin1, Sasha Yang2, Fuhong Zhang1
1State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China.
Analytical chemistry
|December 20, 2024
概括
一种新的热重量测量分析与质谱法 (TG-MS) 结合在线的方法准确地确定有机物中的元素含量. 这种技术还揭示了对共价键结构的洞察力,为传统的ASTM分析提供了先进的替代方案.
科学领域:
- 分析化学 分析化学
- 材料科学 材料科学 材料科学
- 有机地化学 有机地化学
背景情况:
- 对有机物质进行精确的元素分析对于各种科学和工业应用至关重要.
- 像ASTM分析这样的传统方法可能耗时,可能无法提供详细的结构信息.
- 了解共价键结构有助于阐明燃烧机制.
研究的目的:
- 引入和验证一种新的在线热重力测量分析-质谱 (TG-MS) 技术,用于在有机物中确定元素含量.
- 将TG-MS方法的结果与已建立的ASTM分析标准进行比较.
- 调查TG-MS在提供对有机物共价键结构的洞察力方面的能力.
主要方法:
- 有机物样本在一个富含氧气的环境中被燃烧在热重力测量 (TG) 系统中.
- 在燃烧过程中产生的气体 (CO2,CO,H2O,NOx,SO2) 用在线质谱 (MS) 实时分析.
- 使用特定温度编程,载体气体流量和氧度参数的外部标准方法进行了定量分析.
主要成果:
- 该TG-MS方法的结果与煤炭,页岩油和生物质样本的ASTM分析相似.
- 与ASTM方法相比,重油样本的元素含量值略低.
- 该研究成功地将质量损失和气体生成模式与有机物样本的燃烧机制和共价键结构相关联.
结论:
- 开发的TG-MS技术为确定不同类型有机物质元素含量提供了可靠和高效的替代方案.
- 这种方法提供了关于共价键结构的宝贵补充信息,增强了对有机物质组成和燃烧的理解.
- 该TG-MS方法显示出在各种领域推进有机材料分析的巨大潜力.
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