Tm. Dowling et Pc. Uden, ALKYLTIN SPECIATION IN SEA-WATER WITH ONLINE HYDRIDE CONVERSION AND GAS-CHROMATOGRAPHY ATOMIC-EMISSION DETECTION, Journal of chromatography, 644(1), 1993, pp. 153-160
A method for the speciation of alkyltin pollutants in sea water combin
es solid phase extraction of organotin species from aqueous samples an
d an on-line hydride generation technique with gas chromatography, fol
lowed by element-specific detection for tin. Detection was performed u
sing a microwave-induced plasma atomic emission detection system which
provides a 0.5 pg detection limit for tin and a 3 . 10(4) tin-to-carb
on selectivity ratio. Solid-phase extraction provides fast, simple ana
lyte concentration while on-line hydride conversion improves chromatog
raphic behavior and analyte recovery. This combination results in a me
thod capable of measuring pg/ml levels of alkyltin species in the comp
lex matrix of sea water.