کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
9484362 1328338 2005 16 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Assessing degradation capability of aerobic indigenous microflora in PAH-contaminated brackish sediments
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات اقیانوس شناسی
پیش نمایش صفحه اول مقاله
Assessing degradation capability of aerobic indigenous microflora in PAH-contaminated brackish sediments
چکیده انگلیسی
A study was conducted to determine polycyclic aromatic hydrocarbons (PAHs) distribution and microbial population changes in brackish sediments from an Italian lagoon included in the Ramsar List of Wetlands of International Importance. The presence and level of PAH-degrading bacteria were estimated by the most probable number (MPN) enumeration technique, whereas degradation capability towards target compounds was checked against loss of spiked PAHs (Phenanthrene, Anthracene and Fluoranthene) in MPN tubes after incubation in optimal conditions. Chemical analyses and microbiological counts suggested a potential for PAHs biodegradation by natural occurring populations of sediment microorganisms, thus indicating an “optimal range” in sediment PAHs concentrations, outside of which the natural selection of the indigenous microflora did not occur. The MPN procedure here described, provided an effective and reliable way to simultaneously determine microbial population densities and subsequent confirmation of the biodegradation capability of sediment indigenous microflora when exposed to laboratory and environmental concentrations of PAHs.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Marine Environmental Research - Volume 59, Issue 5, June 2005, Pages 419-434
نویسندگان
, , , , ,