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A Versatile Sample Introduction System with Graphite Tube Furnace for Inductively Coupled Plasma-Atomic Emission Spectrometry

Volume 41, Number 5 (July 1987) Page 918-920

Kumamaru, T.; Okamoto, Y.; Matsuo, H.

The inductively coupled plasma (ICP) has developed into a highly efficient source for atomic emission spectrometry (AES). With the demand for processing microliter, high-salt-content, and viscous solutions, the graphite tube furnace vaporization (GFV) technique shows high potential for sample introduction. Recently, commercial graphite tube furnace atomizers (GFA) for atomic absorption spectrometry (AAS) have been modified for direct electrothermal sample introduction into ICP. This note details an adaptation of a commercially available GFA to ICPAES that retained as much of the original design of the atomizer as possible, so that the apparatus could be switched easily between conventional GFA-AAS and GFV-ICPAES. The described modifications of the GFA were undertaken with two aims: to minimize the cost of conversion from GFA-AAS to GFV-ICPAES and to optimize the efficiency of introducing analyte vapor into the ICP.