Department of Agronomy, and USDA-SEA-Agricultural Research, University of Nebraska, Lincoln, Nebraska 68583.
Plant Physiol. 1978 Dec;62(6):924-6. doi: 10.1104/pp.62.6.924.
A method has been developed to measure concentrations of CO(2) in gases rapidly. A gas sample is injected into a flowing carrier gas that passes through an infrared CO(2) analyzer. A strip chart recorded peak response is obtained which is proportional to the CO(2) concentration. A resolution of better than 2 microliters of CO(2) per liter of gas was obtained. Seven to 10 seconds were required for sample analysis once the sample was obtained. Sorghum bicolor plant respiration was determined at different temperatures by measuring CO(2) using this system and by using a conventional system. The correlation between techniques was 0.996, and about the same variation occurred within each method. This technique greatly increased the efficiency of the infrared CO(2) analyzer in our laboratory for use in plant respiration and photosynthetic studies.
已经开发出一种快速测量气体中 CO(2)浓度的方法。将气体样品注入流过的载气中，该载气通过红外 CO(2)分析仪。记录得到与 CO(2)浓度成正比的峰响应的条带图。每升气体中 CO(2)的分辨率优于 2 微升。一旦获得样品，分析样品需要 7 到 10 秒。通过使用该系统和传统系统测量 CO(2)，确定了不同温度下高粱植物的呼吸作用。两种技术之间的相关性为 0.996，并且每种方法内的变化大致相同。这项技术极大地提高了我们实验室中红外 CO(2)分析仪在植物呼吸和光合作用研究中的效率。
