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2299885 
Technical Report 
Determination of butyltin species in water by gas chromatography with flame photometric detection 
Maguire, RJ; Huneault, H 
1981 
PESTAB/81/2983 
Chromatogr 
3 
PESTAB. A method is described for the determination of bis(tri-n-butyltin) oxide (TBTO) and some of its possible dealkylation products in natural waters. The approach involves making n-pentyl derivatives of TBTO and its dealkylation products. The minimum detectable amounts injected were about 100 pg of all 4 derivatives tested with linear responses over concentration ranges of at least 100. The 4 derivatives included Bu3PeSn, Bu2Pe2Sn, BuPe3Sn, and Pe4Sn. The reproducibility of the peak area with multiple injections was excellent. Mass spectra reveal the typical tin cluster as well as losses of butyl and pentyl. The striking feature is the disappearance of the cluster centered at m/e 179 (BuSnH2+) and the appearance of the cluster centered at m/e 193 (PeSnH2+) as n decreases in the series BunPe4-nSn.