人体皮肤释放气体的鉴定：甲烷、乙烯和乙烷。

Identification of gas emanated from human skin: methane, ethylene, and ethane.

作者信息

Nose Kazutoshi, Nunome Yoko, Kondo Takaharu, Araki Syuki, Tsuda Takao

机构信息

Department of Materials Science & Engineering, Graduate School of Engineering, Nagoya Institute of Technology, Gokiso, Showa, Nagoya 466-8555, Japan.

出版信息

Anal Sci. 2005 Jun;21(6):625-8. doi: 10.2116/analsci.21.625.

DOI:10.2116/analsci.21.625

PMID:15984195

Abstract

We investigated whether methane, ethylene and ethane gas can be detected in gas emanating from human skin, which is called skin gas. Skin gas was collected with a homemade stainless-steel trap system, which was cooled with liquid nitrogen, and analyzed with a gas chromatograph fitted with a flame ionization detector (FID). Skin-gas samples were obtained by covering a hand for 30 min with a polyfluorovinyl bag in which pure helium gas was introduced. The bag, the trap system and GC were set up online to avoid any contamination by air. Methane, ethylene and ethane in skin gas were successfully collected at an average amount emanated for 30 min (from ten subjects) of 150 +/- 63, 20 +/- 11 and 17 +/- 8 [mean +/- SD] pg/cm2, respectively.

摘要

我们研究了在人体皮肤释放的气体（即皮肤气）中是否能检测到甲烷、乙烯和乙烷气体。皮肤气是用自制的不锈钢捕集系统收集的，该系统用液氮冷却，并用配备火焰离子化检测器（FID）的气相色谱仪进行分析。皮肤气样本是通过用一个引入纯氦气的聚氟乙烯袋覆盖一只手30分钟获得的。袋子、捕集系统和气相色谱仪在线设置，以避免空气的任何污染。皮肤气中的甲烷、乙烯和乙烷被成功收集，30分钟（来自10名受试者）的平均释放量分别为150±63、20±11和17±8[平均值±标准差]皮克/平方厘米。