Spatial and temporal distribution of dissolved/dispersed aromatic hydrocarbons in seawater in the area affected by the Prestige oil spill
Spatial and temporal distribution of dissolved/dispersed aromatic hydrocarbons in seawater in the area affected by the Prestige oil spill
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DOI：
10.1016/j.marpolbul.2005.09.039
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发表时间：
2006-01-01
影响因子：
5.8
通讯作者：
Albaiges, J.
中科院分区：
文献类型：
--
作者：
Gonzalez, J. J.;Vinas, L.;Albaiges, J.
海水样品收集在三个深度从68站沿着西班牙北方海岸进行了分析溶解/分散的石油芳烃的紫外荧光和25个单独的化合物的GC-MS。采样进行了2002年12月，就在威望石油泄漏，并在2003年2月至3月和9月。2002年12月在加利西亚海岸附近采集的样本中，在所有深度都发现了较高浓度的总芳烃，浓度范围为0.19至28.8微克/升当量。油（0.1-4.8 μ g/L黄原胶当量）。这些值在随后的巡航中下降，直到< 0.05-2.86 μ g/L油当量。（av. 0.23微克/升金当量）2003年9月，可能代表该区域的背景水平。然而，在坎塔布连海岸，在3月的巡航中，它们仍然高出水面，这可能是由于燃油到达该地区较晚。还确定了一些沿海热点，其数值高达29.2微克/升燃油当量，靠近河口和城市地区。个别PAH分布在2002年12月的采样关闭加利西亚占主导地位的烷基萘衍生物，一致的燃料油水容纳馏分所示的模式分布。在受泄漏影响最严重的Costa da Morte（av.）沿线沿着的地下样本中发现了较高的浓度。0.46微克/升西格玛16多环芳烃）。在其他地区采集的其余样品中，2-4环多环芳烃的浓度较低，分布较均匀，范围为0.09至0.37微克/升（平均值）。0.15微克/升西格玛16多环芳烃），并有下降趋势离岸和向下水柱。2003年9月，数值相当一致，平均为0.09微克/升（西格玛16多环芳烃）。(c)2005爱思唯尔有限公司保留所有权利。
Seawater samples collected at three depths from 68 stations along the Northern Spanish coast were analysed for dissolved/dispersed petroleum aromatic hydrocarbons by UV-fluorescence and for 25 individual compounds by GC-MS. Sampling was performed in December 2002, just after the Prestige oil spill, and in February-March and September 2003. Higher concentrations of total aromatic hydrocarbons were found at all depths in the samples collected during December 2002 off the Galicia coast, with levels ranging between 0.19 and 28.8 mu g/L eq. oil (0.1-4.8 mu g/L chrysene eq.). These values decreased in the following cruises, till < 0.05-2.86 mu g/L oil eq. (av. 0.23 mu g/L chrysene eq.) in September 2003, possibly representing the background levels for the region. However, in the Cantabrian coast they were still high at the surface in the March cruise, probably by the late arrival of the fuel-oil to this area. Some coastal hot spots were also identified, with values up to 29.2 mu g/L fuel-oil eq., close to river mouths and urban areas. The individual PAH distributions in the December 2002 sampling off-Galicia were dominated by alkyl-naphthalene derivatives, consistently with the pattern distribution shown by the fuel-oil water accommodated fraction. The higher concentrations were found in the subsurface samples along the Costa da Morte, the area most heavily affected by the spill (av. 0.46 mu g/L Sigma 16 PAHs). The rest of the samples collected in other areas exhibited lower concentrations and a more even distribution of 2-4 ring PAHs, that ranged from 0.09 to 0.37 mu g/L (av. 0.15 mu g/L Sigma 16 PAHs), with decreasing trends offshore and downward the water column. In September 2003, the values were rather uniform, averaging 0.09 mu g/L (Sigma 16 PAHs). (c) 2005 Elsevier Ltd. All rights reserved.