Аннотация:For the most refractory elements the detection limits in laser‐induced ionization (LII) atomic spectrometry in conventional analytical flames are not so low because these elements produce stable metal oxides. There are two possible ways to overcome this problem: to use LII atomic spectrometry in high‐temperature flames or to use LII molecular spectrometry in cooler flames. In this report we describe our initial results applying LII spectrometry of LaO molecules in natural gas/air flame to La determination in aqueous solution. Without having optimum condition detection limit of 10 ng/mL La was reached