The invention relates to methods of determining potassium ions in a sample, wherein the ions are contacted with a compound having chromophoric moiety and an ionophoric moiety, where the ionophoric moiety interacts with the potassium ions present in the sample, resulting in the chromophoric moiety changing its radiation absorption properties in the ultraviolet and visible regions of the spectrum. For example, a change in an intensity of an absorption maximum is measured and the ion concentration is determined accordingly.
该发明涉及在样品中测定
钾离子的方法,其中离子与具有色团基团和离子诱导基团的化合物接触,其中离子诱导基团与样品中存在的
钾离子相互作用,导致色团基团在紫外和可见光谱区的辐射吸收特性发生变化。例如,测量吸收峰的强度变化,并据此确定离子浓度。