DETERMINATION OF ORGANOLEAD AND ORGANOTIN COMPOUNDS IN WATER SAMPLES BY MICELLAR ELECTROKINETIC CHROMATOGRAPHY

Micellar electrokinetic chromatography separation of organolead and or ganotin compounds was investigated. The effects of surfactant concentr ation and electrolyte buffer pH on the peak efficiencies and resolutio n were studied. Enrichment of the organolead and organotin species in water samples by liquid-liquid extraction and solid phase extraction u sing C-18 membrane disk was performed. 1000-40,000 fold preconcentrati on for lead and tin species was obtained using solid phase extraction. The detection limits for organolead and organotin compounds were in t he range of 1.1-5.2 parts per billion. The levels of these compounds i n the collected water samples were determined.