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7745416 
Journal Article 
SIMULTANEOUS DETERMINATION OF ORGANOTIN COMPOUNDS IN WHITE WINE BY GAS CHROMATOGRAPHY-MASS SPECTROMETRY 
Wan, Y; Ma, YaQ; Mao, X 
2012 
Yes 
Analytical Letters
ISSN: 0003-2719
EISSN: 1532-236X 
TAYLOR & FRANCIS INC 
PHILADELPHIA 
45 
13 
1799-1809 
English 
WOS:000308361800005 
A simple, reliable, and effective analytical method was developed for the simultaneous determination of five organotin compounds (OTCs) including monobutyltin trichloride dibutyltin dichloride tributyltin chloride tetrabutyltin and triphenyltin chloride in white wines. The OTCs were derivatized with sodium tetraethylborate (NaBEt4), and their derivatives were extracted by liquid-liquid extraction (LLE) into n-hexane. The experimental variables, such as type and volume of extraction solvents, amount of derivatization reagent NaBEt4 and extraction time were optimized. The determination of ethylated derivatives of OTCs in the final extracts was carried out by gas chromatography-mass spectrometry (GC-MS). Under optimized conditions, good linearity was observed when analytical concentrations were in the range of 0.01-4.0 μg · mL-1, the linearity correlation coefficients were between 0.9982 and 0.9987, with the LODs in the range of 0.2-3.0 μg · L-1, and the LOQs varied from 0.6 to 10.0 μg · L-1. The obtained recoveries were in the range of 78.0-120.0%, with the relative standard deviations equal to or lower than 8.1%. This method was applied to the determination of OTCs in white wines with satisfactory results. © 2012 Copyright Taylor and Francis Group, LLC. 
GC-MS; Liquid-liquid extraction; Organotin compounds; White wine