...
首页> 外文期刊>Geophysical Research Letters >Green plants: A terrestrial sink for atmospheric CH3Br
【24h】

Green plants: A terrestrial sink for atmospheric CH3Br

机译:绿色植物:用于大气CH3Br的地面水槽

获取原文
获取原文并翻译 | 示例
           

摘要

Methyl bromide is reactively removed from air by the foliage of all 9 herbaceous, 18 deciduous, and 12 coniferous plants we have tested: in a process that appears enzymatic. Excised plant leaves yielded removal rates directly proportional to leaf surface area and first-order in CH3Br concentration from 10 ppmv to 500 pptv, the current limit of our experimental technique. Observed rate constants for different plants vary within a factor of about 100 with a lower value of 1x10(-3) hr(-1)cm(-2) in systems where the rate is not diffusion limited. This sink for atmospheric CH3Br could be significant in calculations of the global methyl bromide budget. [References: 23]
机译:我们测试了所有9种草食性,18种落叶性和12种针叶植物的叶子,通过空气从空气中去除了甲基溴。摘除的植物叶片产生的去除率与叶片表面积成正比,且CH3Br浓度从10 ppmv到500 pptv处于一阶,这是我们实验技术的当前限制。在速率不受扩散限制的系统中,观察到的不同植物的速率常数在100左右的范围内变化,而较低的值为1x10(-3)hr(-1)cm(-2)。大气中CH3Br的汇在全球甲基溴预算的计算中可能很重要。 [参考:23]

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号