Abstract
An analysis by the Federal Information Fund revealed the lack of methods for measuring the volume fractions of nitrous oxide, carbon oxide and dioxide, oxygen, nitrogen, and non-condensable gases in medical nitrous oxide using portable devices. Nitrous oxide is widely used in medicine, and therefore this research was committed to the development and certification of a method for measuring volume fractions of nitrous oxide, carbon oxide and dioxide, oxygen, nitrogen, and non-condensable gases using gas chromatography in medical nitrous oxide. Certification of the measurement method in accordance with legal requirements in the field of ensuring the uniformity of measurements was carried out by organizing a quasi-interlaboratory experiment; the following approaches were used to obtain the measurement result: the method for constructing a calibration dependence, the external standard method, and the calculation method. In addition, the study presents an algorithm and results for calculating the uncertainty of measurements of volume fractions of gases, subject to the provisions of EURACHEM CITAC, as well methodologically influencing factors that were assessed using a multifactorial experiment and its processing by regression analysis.
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