Affiliations: Chinese Research Academy of Environmental Science,
Beijing 100012, China | GSF-National Research Center for Environment and
Health, Institute of Ecological Chemistry, Ingolstädter Landstraβe 1,
85764, Neuherberg, Germany | Institute of Applied Ecology, Chinese Academy of
Sciences, Shenyang 110015, China
Abstract: Advanced closed chamber system was used to study the fate of
phenanthrene (3-rings PAHs) in the presence of linear alkylbenzene sulphonates
(LAS). The results showed mineralization and metabolism of phenanthrene are
fast in the "culture solution – lava – plant – air" model ecological system.
The distribution proportions of applied ^{14}C-activity in
this simulative ecological system were 41%–45%, 14% to 10% and 1% in plant,
lava and culture solution respectively, and 18% to 29%, 11% to 8% recovered in
the forms of VOCs and CO_2. Main parts of the applied
14C-activity exist in two forms, one is polar metabolites (25%) which mainly
distribute in the root (23%), the other is unextractable part (23%) which have
been constructed into plant root (8.98%), shoot (0.53%) or bonded to lava
(13.2%). The main metabolites of phenanthrene were polar compounds (25% of
applied 14C-activity), and small portion of ^{14}C-activity
was identified as non-polar metabolites (6% of applied
^{14}C-activity) and apparent phenanthrene (1.91% of applied
^{14}C-activity). Phenanthrene and its metabolites can be
taken up through plant roots and translocated to plant shoots. The presence of
LAS significantly increased the the concentration of
^{14}C-activity in the plant and production of VOCs, at the
same time it decreased the phenanthrene level in the plant and the production
of CO_2 at the concentration of 200 mg/L.
Keywords: phenanthrene, LAS, plant, closed chamber systems
