The H2/CO ratio of emissions from combustion sources: comparison of top-down with bottom-up measurements in southwest Germany
The H2/CO ratio of emissions from combustion sources: comparison of top-down with bottom-up measurements in southwest Germany
复制标题
燃烧源排放的 H2/CO 比率：德国西南部自上而下与自下而上测量的比较
DOI：
--
复制
发表时间：
2009
期刊：
影响因子：
--
通讯作者：
I. Levin
中科院分区：
文献类型：
--
作者：
S. Hammer;F. Vogel;M. Kaul;I. Levin
在位于莱茵-内卡污染地区的海德堡（49◦24´N, 8◦42´E），通过两年多的准连续大气观测确定了人为燃烧源的氢-一氧化碳（H2/CO）排放比。对早高峰时段H2和CO混合比变化进行评估，得到的平均摩尔H2/CO比值为0.40±0.06，而根据天气污染事件推断的结果为0.31±0.05 mol H2/mol CO，校正H2土壤汇对测量比值的影响后，平均值为0.46±0.07。得到了0.48±0.07 mol H2/mol CO，这与海德堡/曼海姆地区交通排放的直接源研究结果（0.448±0.003 mol H2/mol CO）非常吻合。包括欧洲其他研究的结果，我们对人为燃烧源（主要是交通）的平均H2/CO排放比的最佳估计范围为0.45 ~ 0.48 mol H2/mol CO，比经常用作计算全球人为燃烧源H2排放量的基础的0.59 mol H2/mol CO小约20%。
The hydrogen-to-carbon monoxide (H2/CO) emission ratio of anthropogenic combustion sources was determined from more than two years of quasi-continuous atmospheric observations in Heidelberg (49◦24´ N, 8◦42´ E), located in the polluted Rhein-Neckar region. Evaluating concurrent mixing ratio changes of H2 and CO during morning rush hours yielded mean molar H2/CO ratios of 0.40 ± 0.06, while respective results inferred from synoptic pollution events gave a mean value of 0.31 ± 0.05 mole H2/mole CO. After correction for the influence of the H2 soil sink on the measured ratios, mean values of 0.46 ± 0.07 resp. 0.48 ± 0.07 mole H2/mole CO were obtained, which are in excellent agreement with direct source studies of traffic emissions in the Heidelberg/Mannheim region (0.448 ± 0.003 mole H2/mole CO). Including results from other European studies, our best estimate of the mean H2/CO emission ratio from anthropogenic combustion sources (mainly traffic) ranges from 0.45 to 0.48 mole H2/mole CO, which is about 20% smaller than the value of 0.59 mole H2/mole CO which is frequently used as the basis to calculate global H2 emissions from anthropogenic combustion sources.