Needle-Type Sample Preparation Devices for Gas Chromatographic Analysis

作者：Ueta Ikuo^*; Saito Yoshihiro

来源：Bunseki Kagaku, 2011, 60(11): 833-844.

• sample preparation
• needle extraction
• gas chromatography-mass spectrometry (GC-MS)
• breath analysis
• fire investigation

The analysis of volatile organic compounds (VOCs) in environmental samples has become a more important aspect in the field of analytical science. Typically, a kind of sample preparation process is needed to determine trace levels of VOCs before analysis in gas chromatography (GC).
Recently, two needle-type sample preparation devices, fiber-packed needle and particle-packed needle, have been successfully introduced to the determination of various VOCs in environmental samples. For a fiber-packed needle, a bundle of fine filaments coated with polymeric materials was longitudinally packed into the needle. Several polycyclic aromatic hydrocarbons (PAHs) in aqueous samples were rapidly extracted by the fiber-packed needle, and the needle was further applied for the simultaneous derivatization/extraction of gaseous VOCs, such as volatile aldehydes, ketones and ethylene oxide. A particle-packed needle, where porous polymer particles were packed, has also been developed for the extraction of VOCs commonly found in environmental gaseous samples. After optimization of the experimental parameters with the particle-packed extraction needle, the device was applied to the analysis of several real samples including human breath, environmental tobacco smoke and air related to third-hand smoking. A further application of the needle device to fire investigations was also suggested. In this article, an overview for the development of needle-type extraction devices was presented along with some applications to real sample analysis in GC.

• 出版日期2011-11