SOLID-PHASE EXTRACTION AND SPECTROFLUOROMETRIC DETERMINATION OF TRIPHENYLTIN IN ENVIRONMENTAL-SAMPLES

The effects of several micellar and aqueous-organic media on the fluor escence of the 3-hydroxyflavone-triphenyltin complex are reported. The relationship between emission intensity and experimental variables wa s studied in order to establish a spectrofluorimetric method for the d etermination of triphenyltin in a micellar medium of Triton X-100. Lin ear calibration graphs were obtained in the ranges 0.1-10, 5-120 and 5 0-400 mug l-1 Sn as triphenyltin. The detection limit was 0.07 mug l-1 . The stoichiometric composition of the complex was determined to be 1 :1, with log K(f) = 7.0. The solid-phase extraction of triphenyltin fr om sea water with C18 cartridges was studied. The breakthrough volume was greater than 11. Elution profiles with methanol and a solution of 3-hydroxyflavone in methanol were obtained. A concentration factor of up to 100 was achieved.