Chapter 1. Spectroscopical methods1.1. General remarks1.2. Electrothermal atomic absorption spectrometry1.3. Fluorescence analysis1.4. Enhanced two-jet arc plasmatron and other works on atomic emission analysis1.5. X-ray polycapillary optics1.6. X-ray radiometric analysis and its applications1.7. Other spectroscopical methodsReferences for Chapter 1Chapte...