大气CO_2标准气浓度标定及采样瓶CO_2浓度分析系统  

Study of Atmospheric Carbon Dioxide Calibration and Flask Sample Analysis System

作　　者：张晓春[1] 蔡永祥[2] 温玉璞[3] 周凌晞[3] 汤洁[3] 

机构地区：[1]北京大学物理学院大气科学系,北京100871 [2]中国大气本底基准观象台,西宁810001 [3]中国气象科学研究院中国气象局大气成分观测与服务中心中国气象局大气化学重点开放实验室,北京100081

出　　处：《气象科技》2005年第6期538-542,547,共6页Meteorological Science and Technology

基　　金：科技部基础性工作项目G99-A-07"大陆大气基准研究"资助

摘　　要：对美国NOAA/CMDL开发的用于我国大气本底监测的非色散红外CO2瓶分析和标准气标定系统做了测试与讨论,并对在青海瓦里关、浙江临安、黑龙江龙凤山和北京上甸子所采集到的实验性空气样品中的CO2浓度进行了测量,与瓦里关在线连续测量结果进行了对比,结果均表明该系统具有较高的灵敏度、精确度和较好的稳定性,具备了从进样到数据处理等较为完整的自动化功能,具有简便易行、准确可靠等特点,可用于大气CO2标准气体的标定及采样瓶分析。测量和对比结果也表明,样瓶采样和分析系统可在一定程度上替代现场连续测量系统,在不同的地点进行采样并进行集中分析也是一种较为经济、实用的方法。The study focuses on a test and discussion of non-dispersive infrared CO2 flask sample analysis and standard gas calibration system developed by NOAA/CMDL and used in the baseline atmosphere monitoring in China with the mixing ratios of carbon dioxide in the flask air samples tentatively taken at Waliguan （Qinghai）, Linan （Zhejiang）, Longfengshan （Heilongjian） and Shangdianzi （Beijing） being measured. Meanwhile, a comparison was made with the continuous online measurements at Waliguan. The results all indicate that the system is of high-level sensitivity, precision and stability with an automatic function from sample injection to data processing. It can be applied to the calibration of CO2 standard gases and the analysis of flask samples, being easyoperating and reliable. The air sampling and analyzing system can be used, to some extent, instead of the in-situ continuously monitoring system. It is also an economical and practical way to take samples in different sites and analyze together

关 键 词：红外分析 CO2 标定 标准气 瓶采样 

分 类 号：X131[环境科学与工程—环境科学] TE937[石油与天然气工程—石油机械设备]