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在全球变化研究中 ,海气交换平衡器是海水中二氧化碳分压 ( PCO2 )直接测定的关键。本文在喷淋式平衡器和鼓泡式平衡器的基础上设计了新的喷淋 -鼓泡式平衡器 ,就平衡器体积、平衡后气体进样方式、海气平衡时间等作了改进并与层流式平衡器进行了互校 (气相色谱法现场测定 )。经精密度分析和 F法、t法显著性检验 ,本实验室的喷淋 -鼓泡平衡器 -气相色谱系统对大气和海水中 PCO2 的分析 ,都可达到通量计算中 PCO2 的测定精密度需小于 1 %的要求。两种平衡器之间无显著性差异 ,改进的喷淋 -鼓泡式平衡器能准确测定海水中的二氧化碳分压
In the study of global change, the balance of the air-sea exchangers is the key to the direct measurement of carbon dioxide partial pressure (PCO2) in seawater. In this paper, based on the spray balancer and bubbling balancer, a new spray-bubble balancer is designed to improve and balance the volume of balancer, gas injection after balance, Cross-correlation with laminar flow balancers (GC on-site determination). After precision analysis and F method, t test significant test, the laboratory spray - bubbling balancer - gas chromatography analysis of PCO2 in the atmosphere and seawater, can reach the throughput calculation PCO2 determination precision Require less than 1%. There was no significant difference between the two balancers, and the improved spray-bubble balancer accurately measured the partial pressure of carbon dioxide in seawater