Emission spectroscopy is
Release time:
May 11,2022
Emission spectrometry is an analysis method that uses discharge plasma evaporation to excite the target element in the sample, and performs qualitative analysis based on the wavelength of the obtained element-specific bright line spectrum (atomic spectrum), and quantitative analysis based on the luminescence intensity.
In a broad sense, excitation discharge (light source) also includes ICP emission spectrometry using ICP (Inductively coupled plasma) as the excitation discharge (light source). However, emission spectrometry (luminescence analysis) or photoelectric photometric emission spectrometry refers to emission spectrometry using spark discharge/DC arc discharge/glow discharge as the excitation discharge. In emission spectrometry, discharge occurs between the solid metal sample and the electrode.
Shimadzu's emission spectrometry analyzer performs spark discharge in an argon atmosphere, performs statistical processing on the luminescence of the spark pulse, and adopts a method that can improve the measurement reproducibility (precision) (PDA photometry method: Pulse Distribution Analysis).
Emission spectrometry analyzers can quickly measure the elemental composition of solid metal samples and are an indispensable tool for iron and aluminum smelting process management.