Figure 4. (Colour online) Mass Spectrums fragmentation patterns (finger prints) of ethyl–derivatives, TBT, DBT and MBT respectively from sample isolate C7 (KX881905) on day 21 accurately showing the mass measurement of the molecular ion (M+) peak for, TBT at m/z 291, DBT at m/z 263 and for MBT at m/z 235 and further the base peak at m/z 207 for TBT and DBT and m/z 235 for MBT which confirms all three identities based on its mass spectrometric properties. A comparison was also made of the fragmentation patterns found in sample isolate C7 (KX881905) against the underlying NIST mass spectrometry library spectrums which identified TBT and degrading products DBT and MBT with good to excellent match factors [40]. Additional from the mass spectrum the characteristic ions for TBT and degrading products DBT and MBT can be seen and are listed in Table 1. (y-axis, relative abundance, x-axis, m/z)

From

Gas Chromatographic Approach to Evaluate the Efficacy of Organotin Degrading Microbes

Christopher Finnegan, David Ryan, Anne-Marie Enright, Guiomar Garcia-Cabellos

International Journal of Environmental Bioremediation & Biodegradation. 2017, 5(1), 18-26 doi:10.12691/ijebb-5-1-3