- Conference date: 15–20 June 2008
- Location: Valladolid (Spain)
A six electrode direct current plasma arc has been developed for atomic emission spectrochemical analysis. Background emission spectrum is recorded over wavelength range (200–700) nm. The effects of the argon flow rates and different applied currents have been studied on the emission spectra lines of Mg I 285.21 nm and Mg II 280.27 nm. Emission spectroscopy has been used to determine the plasma temperature by using different methods. The electron density has been calculated. The plasma temperatures ranged from about 5850 to 6250 K, and the electron number density varied from to . The detection limits of elements Ca, Cr, Fe, Mg and Mn have been carried out. The presented technique is capable of determining trace element concentrations in the environmental samples. Advantages of this system include being simple, of low cost, stable and also has the ability to be operated for elongated hours.
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