Аннотация:The selective and sensitive technique of laser optogalvanic spectroscopy has been used in order to detect element traces. Different variants of sample atomizationin in a flame, including microtechniques, were applied. The alkali elements were chosen as objects of investigation. The limits of detection 10-4-10-6 ppm in water solutions have been achieved. The effect of different excitation schemas of atoms, voltage gradient in the excitation zone, interferences of easily ionized elements on a optogalvanic signal has been studied. Application of this technique to the analysis ofsome real samples has been demonstrated.