Abstract
In this paper, sequel to an earlier publication in these Acta, a new type of flame-photometer is described, constructed by us in order to improve the determination of K and Na in blood serum. This improvement has been achieved by employing a flame of lower temperature (propane gas and air), a spray with higher yield and a photo-multiplier connected directly to an a.c. galvanometer. In this way annoying disturbances ( e.g. interference effects between K and Na) are avoided, the consumption of sample is reduced and the handling of the apparatus is simplified. The accuracy and the sensitivity remain unimpaired. For an explanation of the terms used and the problems discussed the previous communication in this journal should be consulted.
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