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Degradation of tributyltin chloride in water photoinduced by iron(III)
Author(s) -
Mailhot Gilles,
Astruc Michel,
Bolte Michèle
Publication year - 1999
Publication title -
applied organometallic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.53
H-Index - 71
eISSN - 1099-0739
pISSN - 0268-2605
DOI - 10.1002/(sici)1099-0739(199901)13:1<53::aid-aoc814>3.0.co;2-5
Subject(s) - tributyltin , chemistry , radical , tin , degradation (telecommunications) , mineralization (soil science) , chloride , photochemistry , irradiation , yield (engineering) , quantum yield , nuclear chemistry , environmental chemistry , organic chemistry , materials science , metallurgy , telecommunications , physics , quantum mechanics , computer science , nuclear physics , nitrogen , fluorescence
The degradation of tributyltin chloride (TBT) photoinduced by iron(III) was investigated. Upon irradiation at λ excitation >300 nm a photoredox process was observed, yielding iron(II) and ·2 OH radicals. The disappearance of TBT was proved to involve only an attack by ·2 OH radicals: the quantum yield of TBT disappearance was determined. A wavelength effect was observed; the shorter the excitation wavelength, the higher the rate of TBT disappearance. Most of the photoproducts were identified and the mechanism of degradation was elucidated. The main route to degradation is a stepwise debutylation of TBT to di‐ and mono‐butyltin with final formation of inorganic tin. The complete mineralization of TBT was achieved with long irradiation times, leading to innocuous inorganic tin. Copyright © 1999 John Wiley & Sons, Ltd.