Polycyclic Aromatic Hydrocarbons in Offshore Surface Sediments of the Northern Persian Gulf, Bushehr Province (original) (raw)
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Polycyclic Aromatic Compounds, 2015
Polycyclic Aromatic Hydrocarbons (PAHs) which their carcinogenic and mutative effects have been proved are one of the major categories of pollutants entering the marine environment. Due to their hydrophobic, lipophilic characteristics, they accumulate in the sediments of coastal areas. Khowre-Musa System as a semi enclosed ecosystem receives high levels of contamination due to its location in the vicinity of industrial sites. This study was performed to determine concentrations of PAHs in the sediments of three creeks (Khowre-Jafari, Khowre-Ahmadi and Khowre-Ghannam) from the Khowre-Musa System. A total of 27 samples (3creeks x 3sites per each creek x 3 composited samples per site) were collected. 10 PAHs (acenaphylene, acenaphthene, fluorene, anthracene, fluorathene, pyrene, chrysene, benzo(b) fluoranthene and benzo(a)pyrene) were detected in the sediment samples using HPLC. Total concentrations of PAHs values were highest at Khowre-Jafari site. Most of 10 selected PAHs concentrations were higher than standards. The results of the study suggest the petrochemical industry play most important role in the contamination of the study area.
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To assess the status of polycyclic aromatic hydrocarbon (PAH) contamination in sediments of Hadhramout coastal area, Gulf of Aden, Yemen, 17 surface sediment samples were collected in March-April 2005 and analyzed for PAHs with 2-6 benzene rings by gas chromatography-mass spectrometry (GC-MS). The concentrations of PAHs in surface sediments were in the range of 2.2-604 ng g − 1 (average value: 82.4 ng g − 1 ). PAHs contamination is highest in proximity to harbour activities, near Al-Dhabah petroleum terminal and urban areas. Comparison of the concentration range with a worldwide survey of sedimentary PAH concentrations ranked PAH contamination in Hadhramout coastal sediments as low to moderate. Assessment of PAH sources in Hadhramout coastal sediments suggested that they originated largely from petrogenic sources. PAHs of pyrolytic origin were found in sediments from urbanized areas. Adverse effects on benthic communities are not expected at the levels of PAHs contamination observed from harbour and industrial areas.
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Coastal sediments in marine waters of Qatar have the potential of being contaminated by Polycyclic Aromatic Hydrocarbons (PAHs) due to extensive petroleum exploration and transportation activities within Qatar's Marine Exclusive Economic Zone. In this study, the concentration and distribution of sixteen PAHs classed as USEPA priority pollutants were measured in sediments from the eastern Qatari coast. PAHs were recovered from sediments via accelerated solvent extraction and then analyzed using Gas Chromatography-Mass Spectrometry. Total concentrations of the PAHs were in the range of 3.15-14.35μg/kg, and the spatial distribution of PAHs is evaluated in the context of sediment total organic content, depth and the grain size together with and the proximity of petroleum exploration and transportation activities. The data show that the concentrations of PAHs within the study area were in the low-range, suggesting a low risk to marine organisms and limited transfer of PAHs into the f...
GHAZALEH MONAZAMI TEHRANI, ROSLI HASHIM, A. HALIM SULAIMAN, BELIN TAVAKOLY SANY, AISHAH SALLEH, REZA KHANI JAZANI, AHMAD SAVARI, RASOUL FALAH BARANDOUST
Sediment samples were collected from the coastal area of the Petrochemical Special Economic Zone of Musa Bay. The samples were analyzed to determine the degree of hydrocarbon contamination and identify the sources of PAHs which were evaluated by employing the ratios of specific PAHs compounds and principal component analysis (PCA). The levels of TPH concentration in the studied area were relatively moderate compared to the world-wide chronically oil-contaminated locations. The concentration of total PAHs was lower than those in other parts of the Musa Bay but approached the NOAA sediment quality guideline value.
2012
4 Abstract: In this study, sediment of three stationsfrom Musa estuary were analyzed in order to determine the concentrations of three carcinogens PAHs including anthracene, pyrene and benzo (a) pyrene. Each station was divided into three parts including upper, middle and lower parts. The highest level of anthracene, pyrene and benzo (a) pyrene was 87.65, 33.21 and 107.54 ng g respectively. The results showed that there were 1 significant differences among the three parts of each station. The results also indicated that there were significant differences between the stations.Jafari and Zangi showed the highest concentration of the PAHs. Jafari receive huge amount of petrochemical wastewaters and other pollutant from surrounding area.
Environmental health engineering and management, 2021
Background: Polycyclic aromatic hydrocarbons (PAHs) are stable and highly toxic environmental pollutants, which are produced mainly through combustion processes. The present study aimed to identify and determine PAHs compounds and their ecotoxicological effects in surface sediments of 20 stations in Bushehr province (Assaluyeh, Kangan, Khark, Emam Hasan, and Bushehr areas). Methods: All sediment samples (0-5 cm) were collected from 20 sites of Persian Gulf costs (Bushehr province, Iran). The concentration of PAHs was determined by HPLC. Then, in order to identify the sources of PAHs, ƩLPAHs/ƩHPAHs, IP/ (IP + BP), PH/AN, and AN/(PH + AN) ratios were obtained. Sediment quality guidelines (SQGs) and sediment quality criteria (SQC) were used to measure the PAHs ecotoxicological effects in sediments. Results: Based on PAHs isomeric ratios, the contaminants of sediments originated from pyrogenic resources. ƩPAHs values (ng/g dw) in sediment samples ranged from ND to 49180. The toxic equivalent concentration (TEQ car) of PAHs raged from ND-7999 ngTEQ/g. Based on SQGs and SQC, the concentrations of ƩPAHs compounds in 10% and 6% of the sampling stations exceeded effects range median (ERM) and frequent effect level (FEL), respectively, indicating negative ecological risk effects. Conclusion: Sampling stations sediments must be routinely checked for PAHs because may lead to a negative effect on the marine ecosystem, organisms, and humans.