Instituto Argentino de Oceanografía (IADO), CCT-CONICET, Bahía Blanca. C.C.N degrees 804, Bahía Blanca, Argentina.
Environ Monit Assess. 2010 Jan;160(1-4):301-14. doi: 10.1007/s10661-008-0696-5.
This paper is the first comprehensive survey of polycyclic aromatic hydrocarbons (PAHs) in coastal sediments in Bahia Blanca, Argentina, and provides useful information on their levels of concentration, composition, and sources of these pollutants. The total concentrations of PAHs ranged from 15 to 10,260 ng g(-1). The highest contents (mean 3,315 ng g(-1)) of total PAHs in marine sediments were found in the inner channels of the estuary, while the lower ones (204 ng g(-1)) belong to samples collected far away from contamination sources. The global average recorded in this study (1,500 ng g(-1)) indicates that the studied area lies within the referenced category of industrialized coastal zones under chronic pollution. The diagenetic PAH contribution was found to be negligible at all sampled locations; however, the calculation of molecular ratios determined an overimposition of pyrolitic PAHs over the petrogenic input. Further, the use of principal components analysis (PCA) clearly separated ring group compounds and enabled the determination of pyrolitic/combustion PAHs dominancy.
本文首次对阿根廷布兰卡港沿海沉积物中的多环芳烃（PAHs）进行了全面调查，为了解这些污染物的浓度、组成和来源提供了有用信息。多环芳烃的总浓度范围为 15 至 10,260ng/g。在河口的内航道中发现了海洋沉积物中总多环芳烃的最高含量（平均值为 3,315ng/g），而远离污染源的样本含量较低（204ng/g）。本研究记录的全球平均值（1,500ng/g）表明，研究区域属于慢性污染的工业化沿海地带的参考类别。在所有采样点，发现成岩作用对多环芳烃的贡献可以忽略不计；然而，通过分子比的计算确定了热解多环芳烃对生源输入的叠加。此外，主成分分析（PCA）的使用清楚地区分了环组化合物，并确定了热解/燃烧多环芳烃的主导地位。
