Institute of Geology and Geography, SRI Nature Research Centre, Akademijos Str. 2, Room 608, LT-08412, Vilnius, Lithuania.
Faculty of Chemistry and Geosciences, Vilnius University, Naugarduko 24, LT-03225, Vilnius, Lithuania.
Environ Monit Assess. 2019 Mar 9;191(4):212. doi: 10.1007/s10661-019-7367-6.
Curonian Lagoon is the largest lagoon in the Baltic Sea region suffering from a great anthropogenic pressure. Pollution sources within the Nemunas River basin and those within the Klaipėda Port are the main threats to this sensitive water area. For the first time, such a detailed study on 16 priority polycyclic aromatic hydrocarbon distribution, origin, and ecological risks was carried out in the Curonian Lagoon and the Nemunas River Delta. Total PAH concentration ranged from 5.6 to 528.4 ng g d.w., demonstrating low to moderate pollution. The main identified PAH sources were vehicular and biomass emission, petroleum product spills, and coal combustion. A particularly high naphthalene concentration posing adverse biological effects was detected in the Nemunas River Delta region. Occasional adverse biological effects related to acenaphthene and dibenzo(a)anthracene might be observed in several Curonian Lagoon locations. The data obtained could serve for the improvement of the current regional environmental monitoring program: it reveals the need to take into account different sedimentary environments while choosing sampling locations. In addition to that, more PAHs could be included to the hazardous substance list.
库尔斯沙嘴潟湖是波罗的海地区最大的潟湖，承受着巨大的人为压力。涅曼河盆地和克莱佩达港内的污染源是这个敏感水区域的主要威胁。这是首次在库尔斯沙嘴潟湖和涅曼河三角洲对 16 种优先多环芳烃的分布、来源和生态风险进行如此详细的研究。总多环芳烃浓度范围为 5.6 到 528.4 纳克/克干重，表明污染程度较低或中等。主要确定的多环芳烃来源是车辆和生物质排放、石油产品泄漏和煤炭燃烧。在涅曼河三角洲地区检测到了浓度特别高的萘，这可能会对生物产生不利影响。在几个库尔斯沙嘴潟湖地区可能会偶尔观察到与苊烯和二苯并(a)蒽相关的不利生物影响。所获得的数据可用于改进当前的区域环境监测计划：它表明在选择采样地点时需要考虑不同的沉积环境。除此之外，还可以将更多的多环芳烃列入危险物质清单。
