Abstract

An improved graphite furnace electrothermal vaporization device, equipped with an autosampler system for precise and almost contamination-free introduction of solid samples, was used for the simultaneous determination of Al, Ag, As, Bi, Ca, Co, Cr, Cu, Fe, Ga, K, Li, Mg, Na, Ni, and Pb in graphite and silicon carbide by inductively coupled plasma atomic emission spectrometry. The volatilization of most analytes could be significantly improved by addition of Freon 1,2 to the argon carrier gas. Calibration was performed using aqueous standard solutions. Owing to the extremely low blanks, large applicable sample portions (up to 16 mg), high transport efficiency, and the addition of Freon 1,2, extraordinarily low limits of detection in the range 5−250 ng/g were achieved. The accuracy was checked by comparison of the results with those obtained by various other methods. For most analytes in both matrixes, the comparison led to very good agreement of the results.

Talk to us

Join us for a 30 min session where you can share your feedback and ask us any queries you have

Schedule a call

Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.