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device for metning of gasandelen oxygen, carbon monoxide and carbon dioxide in gaseous or liquid samples, in particular in andedrekten and blood
device for metning of gasandelen oxygen, carbon monoxide and carbon dioxide in gaseous or liquid samples, in particular in andedrekten and blood
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机译:用于气态或液态样品,特别是安德烈克滕和血液中的气态氧,一氧化碳和二氧化碳的测定装置
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摘要
To measure the proportions of gases, a reagent solution is used which is specific for the gas whose proportion is to be measured and which discolours in a characteristic manner if the gas in question is present. The sample and the respective reagent solution are fed in and mixed together while maintaining a constant ratio of the amounts fed in or the mixing ratio of the sample and the reagent solution. The concentration of the substance producing the colour (O2, CO or CO2) is determined by measuring the absorbance in a photometer. Such a method makes it possible to carry out the measurement for three different gases in the same way and requires inexpensive chemicals only to be replaced in the process.
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