"Flow System For Liquid Sample Introduction In Arc-spark Excitation Sources"
Analyst
1996 Volume 121, Issue 12 Pages 1923-1927
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Carlos Roberto Bellato and Celio Pasquini
Abstract:
A flow system, based on the monosegmented flow analysis approach, is described for the automated delivery of liquid samples to arc/spark excitation sources commonly used with plane grating spectrographs. The sample (50 µL) was carried between two air segments into the path of the excitation source via a hole drilled in a conventional graphite electrode. The arc/spark is applied to excite the sample for a pre-set time interval and the light emitted is integrated. A diagram of the flow system is given. The throughput was 25 samples/h. The flow system was used in the determination of Al, Pb and mixtures of Hf and Zr in aqueous solution (results presented and discussed).
Aluminum
Lead
Hafnium
Zirconium
Interface
