挥发性有机化合物样本在注射器容器中的短期和长期存储的适用性:一项比较研究
Paulo Henrique Costa Santos1,2, Pedro Catalão Moura1, Valentina Vassilenko1,2
1Laboratory for Instrumentation, Biomedical Engineering and Radiation Physics (LIBPhys-UNL), Department of Physics, NOVA School of Science and Technology, NOVA University of Lisbon, Campus FCT-NOVA, 2829-516 Caparica, Portugal.
对于长期储存空气样品,带有栓 (AC3) 的注射器在保存挥发性有机化合物 (VOC) 方面优越. 所有测试的注射器都适合在现场分析中进行短期样本转移.
科学领域:
- 分析化学 分析化学
- 环境科学 环境科学
- 生物医学分析 医学分析
背景情况:
- 挥发性有机化合物 (VOC) 是重要的生物标志物和污染物.
- 准确分析VOCs需要稳定的样本储存.
- 现有的空气容器 (AC) 可能会影响分析物的完整性.
研究的目的:
- 评估三种常见的注射器类型作为用于存储VOC样品的空气容器.
- 为了确定最佳的注射器,以随着时间的推移保持分析物的完整性.
- 评估是否适合短期转移和长期存储.
主要方法:
- 分析了99个储存在三种注射器类型 (AC1:玻璃/玻璃,AC2:塑料/塑料,AC3:塑料/) 中的空气样本.
- 气色谱-离子运动谱 (GC-IMS) 用于分析VOCs.
- 主要成分分析 (PCA) 用于评估存储时间 (10分钟至24小时) 上的VOC档案变化.
主要成果:
- 带有杆的注射器 (AC3) 显示出保持分析物的稳定性和完整性的最高能力.
- 与AC1和AC2相比,AC3表现出优越的长期存储能力.
- 所有测试的注射器 (AC1,AC2,AC3) 均适用于短期样本传输 (长达1小时).
结论:
- 建议使用栓注射器 (AC3) 进行长期储存含有VOCs的空气样本.
- 玻璃和塑料注射器适合立即使用或短期样本转移.
- 适当的容器选择对于各种应用中可靠的VOC分析至关重要.
更多相关视频
05:29Profiling Volatile Compounds in Blackcurrant Fruit using Headspace Solid-Phase Microextraction Coupled to Gas Chromatography-Mass Spectrometry
Published on: June 9, 2021
07:57Quantitative Detection of Trace Explosive Vapors by Programmed Temperature Desorption Gas Chromatography-Electron Capture Detector
Published on: July 25, 2014
相关概念视频
Gas Chromatography: Sample Injection Systems
Two primary injection methods are used...
Sample Handling
Samples should be transported carefully from collection points to the laboratory. They should be properly sealed and clearly labeled to prevent cross-contamination. To preserve the sample integrity, optimal temperature conditions during transport are essential. This could involve using...
Sampling Methods: Sample Types
Solid samples include a variety of substances, such as sediments from water bodies, soil, metals, and biological tissues. Two standard methods for extracting sediments from water bodies are grab sampling and piston coring. Grab sampling involves using a device to collect a discrete sediment sample from the bottom of a water body with minimal disturbance. Grab samples do not always represent the entire area due to...
Volatilization
Supercritical Fluid Chromatography
SFC utilizes a supercritical fluid mobile phase,...
