page_title: Atomic emission spectroscopy
section_title: Flame
hierarchical_section_title: Atomic emission spectroscopy / Flame
caption_attribution_description: English: Flame photometric assessment of calcium ions dissolved in different concentrations. Polski: Oznaczanie jonów wapniowych rozpuszczonych w różnych stężeniach metodą fotometrii płomieniowej.
context_page_description: Atomic emission spectroscopy is a method of chemical analysis that uses the intensity of light emitted from a flame, plasma, arc, or spark at a particular wavelength to determine the quantity of an element in a sample. The wavelength of the atomic spectral line in the emission spectrum gives the identity of the element while the intensity of the emitted light is proportional to the number of atoms of the element. The sample may be excited by various methods.
context_section_description: A sample of a material (analyte) is brought into the flame as a gas, sprayed solution, or directly inserted into the flame by use of a small loop of wire, usually platinum. The heat from the flame evaporates the solvent and breaks intramolecular bonds to create free atoms. The thermal energy also excites the atoms into excited electronic states that subsequently emit light when they return to the ground electronic state. Each element emits light at a characteristic wavelength, which is dispersed by a grating or prism and detected in the spectrometer.
  A frequent application of the emission measurement with the flame is the regulation of alkali metals for pharmaceutical analytics.
caption: A flame during the assessment of calcium ions in a flame photometer
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