کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6361082 | 1315662 | 2011 | 10 صفحه PDF | دانلود رایگان |
Six sediment samples collected from the Gulf of Mexico were analyzed. Total concentrations of the PAHs ranged from 52 to 403 ng gâ1 dry weight. The lowest PAH concentration without 5-6 rings PAHs appeared in S-1 sample associated with gas hydrate or gas venting. Moreover, S-1 sample had the lowest organic carbon content with 0.85% and highest reduced sulfur level with 1.21% relative to other samples. And, analysis of the sources of PAHs in S-1 sample indicated that both pyrogenic and petrogenic sources, converserly, while S-8, S-10 and S-11 sample suggested petrogenic origin. The distribution of dibenzothiophene, fluorine and dibenzofuran and the maturity parameters of triaromatic steranes suggested that organic matters in S-1 sample were different from that in S-8, S-10 and S-11 sample. This study suggested that organic geochemical data could help in distinguish the characteristic of sediment associated with gas hydrate or with oil seepage.
⺠PAHs in S-1 sample were different from samples associated with oil seepage. ⺠S-1 sample associated with gas hydrate had the lowest organic carbon content. ⺠PAHs in S-1 sample originated from both pyrogenic and petrogenic sources. ⺠Total concentration of the PAHs in S-1 sample was the lowest.
Journal: Marine Pollution Bulletin - Volume 62, Issue 12, December 2011, Pages 2714-2723