Multidisciplinary Institute of Research and Development of Northern Patagonia (IDEPA), National University of Comahue, Neuquen, Argentina.
J Environ Sci Health A Tox Hazard Subst Environ Eng. 2013;48(4):370-9. doi: 10.1080/10934529.2013.728097.
Spatial distribution and probable sources of aliphatic and polyaromatic hydrocarbons (AHs, PAHs) were investigated in surface sediments collected along the bank of the Neuquen River, Argentina. Total concentrations of aliphatic hydrocarbons ranged between 0.41 and 125 μg/g dw. Six stations presented low values of resolved aliphatic hydrocarbons and the n-alkane distribution indexes applied suggested a clear biogenic source. These values can be considered the baseline levels of aliphatic hydrocarbons for the river sediments. This constitutes important information for the assessment of future impacts since a strong impulse in the exploitation of shale gas and shale oil in these zones is nowadays undergoing. For the other 11 stations, a mixture of aliphatic hydrocarbons of petrogenic and biogenic origin was observed. The spatial distribution reflects local inputs of these pollutants with a significant increase in concentrations in the lower course, where two major cities are located. The highest values of total aliphatic hydrocarbons were found in this sector which, in turn, was the only one where individual PAHs were detected.
本研究调查了阿根廷内乌肯河沿岸沉积物中脂肪族和多环芳烃（AHs、PAHs）的空间分布和可能来源。脂肪族烃的总浓度范围在 0.41 至 125μg/g dw 之间。有 6 个站位的 resolved aliphatic hydrocarbons 值较低，应用的 n-烷烃分布指数表明其具有明显的生物源。这些值可以被认为是该河流沉积物中脂肪族烃的基线水平。对于未来的影响评估来说，这是非常重要的信息，因为目前这些地区正在大力开发页岩气和页岩油。对于其余 11 个站位，观察到了源自生源和生源的脂肪族烃混合物。空间分布反映了这些污染物的局部输入，在中下游地区（两个主要城市所在地）浓度显著增加。总脂肪族烃的最高值出现在这个区域，而在这个区域，也是唯一一个检测到个别多环芳烃的区域。
