A VERSATILE SAMPLE INTRODUCTION SYSTEM WITH GRAPHITE TUBE FURNACE FOR INDUCTIVELY COUPLED PLASMA-ATOMIC EMISSION-SPECTROMETRY

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. The recommended procedure for the operation of the GFV device is presented. A comparison of detection limits between the continuous pneumatic nebulization and the GFV sample introduction has been made. The modifications necessary to utilize the GFV system were straightforward, and the system could be switched between ICPAES and AAS systems in a few minutes.