An apparatus is described for the automation of the first part of a proven method for part-per-trillion dioxin analysis. A microprocessor controls the valves and solvent flow for the sequential extraction and enrichment of five tissue samples over a 20-h period. Sample and solvent selection for the multicolumn system and reversed flow elution, fraction collection, and column regeneration are all accomplished without operator attention. The time required by the analyst per sample has been reduced 50% compared with the totally manual method, resulting in greater throughput and lower personnel costs. The apparatus can be easily assembled with commercially available components.
All Science Journal Classification (ASJC) codes
- Analytical Chemistry