Holm-Jensen I
Scand J Clin Lab Invest. 1976 Sep;36(5):493-5. doi: 10.3109/00365517609054469.
A new procedure enables the CO2 concentrations of air samples to be determined and automatically registered. The CO2 contents of the air samples are absorbed in an Sr(OH)2 solution. The resulting decrease in electrical conductivity of the solution is automatically registered by a d.c. strip-chart recorder in such a way that the decline of the curve is proportional to the amount of CO2 absorbed. In each analysis, quantities of CO2 up to about 8 mumol can be determined with an error of less than 0.02 mumol, and, accordingly, CO2 quantities of 2 to 8 mumol contained in samples of at least 150 ml of fresh atmospheric air or about 1 ml of carboxygen or expired air can be analysed with an accuracy of better than +/- 1.0% of their CO2 content.
一种新方法能够测定并自动记录空气样本中的二氧化碳浓度。空气样本中的二氧化碳含量被吸收到氢氧化锶溶液中。溶液电导率的降低会由直流带状图记录仪自动记录，使得曲线下降与吸收的二氧化碳量成正比。在每次分析中，可测定高达约8微摩尔的二氧化碳量，误差小于0.02微摩尔，因此，至少150毫升新鲜大气空气样本或约1毫升含氧量或呼出气体样本中所含的2至8微摩尔二氧化碳量，能够以优于其二氧化碳含量±1.0%的精度进行分析。
