With isotopic techniques, the effects of the concentration, ionic type, and straight chain length of surfactants on the degradation of phenanthrene by Mycobacterium ssp. KR2 were studied. The results showed that in the presence of surfactants, the degradation of phenanthrene was not increased. It was delayed in high concentrations of surfactants (> or = 20 mg.L-1). Tween 80 in its low concentration (< or = 10 mg.L-1) was used as a preferential substrate utilized by Mycobacterium ssp. KR2. The degradation was affected by the ionic types of surfactants, and the inhibition to the phenanthrene degradation was cationic surfactant TDTMA > anionic surfactant LAS > nonionic surfactant Tween 80. Different lengths of surfactant straight chains had different influence on the degradation of phenanthrene.
Ying yong sheng tai xue bao = The journal of applied ecology / Zhongguo sheng tai xue xue hui, Zhongguo ke xue yuan Shenyang ying yong sheng tai yan jiu suo zhu ban 11/2003; 14(11):2011-4.