| 摘要 |
The invention relates to a method of determining an alkali ion in a sample, wherein the alkali ion is contacted with a compound having a luminophoric moiety and an ionophoric moiety, which ionophoric moiety reacts with the alkali ion present in the sample, wherein the luminophoric moiety changes its luminescence properties, after which the luminescence is measured and the alkali ion determined utilizing the test reading, which method is characterized in that the compound utilized is a monoaza-crown ether of the general Formula I in which X is the luminophoric moiety, m is the number 0, 1 or 2, and r and s independently mean the numbers 0, 1 or 2.
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