使用胡丁方法进行对比呼吸分析,使用气相色谱离子移动性光谱仪与微热吸收器相结合
Dorota M Ruszkiewicz1,2, Kristian J Kiland1, Yoonseo Mok1
1Integrative Oncology, BC Cancer Research Institute Vancouver, Vancouver, Canada.
Journal of breath research
|June 14, 2024
概括
微热溶解技术与气色谱-离子移动谱法 (μTD-GC-IMS) 技术相结合,已被验证用于呼吸分析. 这项研究确定了青醇洗的基准值,证明了其可重复性和适合于呼吸诊断.
科学领域:
- 分析化学 分析化学
- 生物医学工程 生物医学工程
- 呼吸系统医学 呼吸系统医学
背景情况:
- 薄荷薄荷倡议建立了一个对呼吸分析技术进行基准测试的协议.
- 之前的研究对气体染色学-离子移动性光谱学 (GC-IMS) 进行了基准测试,但与微热溶解 (μTD) 结合时没有.
- 由于呼吸采样和分析平台之间缺乏相互可比性,因此需要标准化的方法.
研究的目的:
- 通过使用已建立的薄荷薄荷协议对呼吸分析的μTD-GC-IMS技术进行基准测试.
- 评估μTD-GC-IMS的可复制性和适用性,用于分析呼吸中的挥发性有机化合物 (VOC).
主要方法:
- 十名健康参与者遵循了经过修改的薄荷口味协议,在摄入后6小时内提供呼吸样本.
- 呼吸样本 (120厘米3) 在GC-IMS分析之前,使用μTD预先缩.
- 数据处理涉及使用VOCal软件进行背景减法和峰值体积测量.
主要成果:
- 在薄荷清洗过程中,烯醇表现出最显著的度变化,其次是α-pinene和β-pinene.
- 该μTD-GC-IMS技术证明了呼吸分析的高可重现性,平均线性系数 (R2) 为0.99.
- 从基线推断到白醇洗的时间为1111分钟,相当于黄金标准GC-MS.
结论:
- 该μTD-GC-IMS技术是可重现的,适用于呼吸分析.
- 使用这种方法获得的基准值与既定技术相比较,支持其在呼吸诊断中的使用.
- 这项研究为呼吸分析研究中的μTD-GC-IMS提供了至关重要的验证.
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