A COMPARATIVE-STUDY OF GAS-CHROMATOGRAPHY WITH ATOMIC-ABSORPTION AND ATOMIC EMISSION DETECTION FOR THE SPECIATION ANALYSIS OF ORGANOTIN

Two techniques, megabore column gas chromatography quartz furnace atomic absorption spetrometry (MCGC-QFAAS) and MCGC graphite furnace AAS (MCGC-GFAAS), were developed for the determination of pentylated organotin species and compared with the existing techniques, packed column (PC) GC AAS and capillary column (CC) GC-atomic emission spectrometry (AES). Particular attention was given to the design of the interface between a GC column and the detector cell (GF or QF) as well as optimization of the operational variables of the interface and detector. The accuracy of the developed techniques is discussed on the basis of an intermethod comparison analysis of 15 water samples.