Humans as a source of N2O -: Evidences from breath air analysis and 15N tracer experiments

被引：0
|
作者：
Russow, R [1 ]
Neue, HU [1 ]
Wolf, I [1 ]
Plath, C [1 ]
机构：
[1] UFZ Helmholtz Ctr Environm Res, Halle An Der Saale, Germany
来源：
NON-C02 GREENHOUSE GASES: SCIENTIFIC UNDERSTANDING, CONTROL OPTIONS AND POLICY ASPECTS | 2002年
关键词：
breath air; humans; nitrogen-15; nitrous oxide;
D O I：
暂无
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
GC analysis of exhaled air from randomly selected healthy adult volunteers without and with enteral nitrate treatment showed that its nitrous oxide concentration exceeded that of ambient air [0.34 ppm(v)] up to five times. It may be concluded that humans or probably warm-blooded animals in general represent a significant N2O Source. Investigations of selected healthy adults after enteral labelling with [N-15]arginine revealed that nitrous oxide formed in the human body is neither a by-product nor an intermediate of the endogenous NO synthesis from arginine. Probably N2O is formed by reducing nitrate which may result endogenously from NO or has been taken up with food.
引用
收藏
页码：155 / 156
页数：2
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