气体样本中二氧化碳的渗透压测定法。
Osmometry of CO2 in gas samples.
作者信息
Oh M S, Kee C S, Uribarri J, Carroll H J
出版信息
Clin Chem. 1983 May;29(5):884-6.
PMID:6404569
Abstract
Measurement of solute concentrations in biologic fluids by an osmometric technique has been described previously. Here, we describe an osmometric technique for measuring CO2 in gas samples. A solution of NaOH is injected into a graduated syringe containing the gas sample and CO2 is trapped in the reaction: 2NaOH + CO2 leads to Na2CO3 + H2O. The decrease in osmolality of the NaOH solution allows estimation of pCO2 in the original gas sample.
摘要
此前已有文献描述了通过渗透压技术测量生物流体中溶质浓度的方法。在此，我们描述一种用于测量气体样品中二氧化碳的渗透压技术。将氢氧化钠溶液注入装有气体样品的刻度注射器中，二氧化碳在反应中被捕获：2NaOH + CO₂ → Na₂CO₃ + H₂O。氢氧化钠溶液渗透压的降低使得能够估算原始气体样品中的pCO₂。
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