Institute for the Dynamics of Environmental Processes (IDPA), CNR, Venezia, Italy.
Civil Engineering Department, Section of Water and Environment, Aalborg University, Aalborg, Denmark.
Environ Sci Pollut Res Int. 2018 Oct;25(28):28546-28561. doi: 10.1007/s11356-018-2812-6. Epub 2018 Aug 8.
Plastic pollution in the marine environment is becoming a problem of global concern, and the Mediterranean is believed to be one of the worst affected regional seas. The present study presents data on floating microplastics in the Northwestern Adriatic Sea in order to evaluate the possible contribution of two significant potential sources: the lagoon of Venice and the Po River. Samples were collected in March and April 2014 along two transects located off Pellestrina Island (Venice) and the Po Delta, each consisting of four sampling stations at 0.5, 3, 10, and 20 km from the shoreline. Microplastics were quantified and classified according to their colors and shapes and analyzed by micro-attenuated total reflection-FT-IR. Microplastics were found in all samples, albeit with high spatial and temporal variability. The highest concentrations were observed in March at the offshore station of the Pellestrina transect (10.4 particles m) and the two landward stations off the Po Delta (2.1 and 4.3 particles m), highlighting the influence of various factors, such as surface circulation and river discharges, in determining specific accumulation patterns. The most common polymers were polyethylene and polypropylene, and most of the particles were secondary microplastics (83.5%). The patchy distribution of microplastics observed in the study area is driven by hydrodynamic and meteorological factors acting on short time scales.
海洋环境中的塑料污染正成为一个全球性关注的问题，而地中海被认为是受影响最严重的区域海域之一。本研究提供了西北亚得里亚海浮式微塑料的数据，以评估两个重要潜在来源的可能贡献：威尼斯泻湖和波河。这些样本于 2014 年 3 月和 4 月在佩拉斯特里纳岛（威尼斯）和波河三角洲外的两条测线上采集，每条测线由四个采样站组成，位于离海岸线 0.5、3、10 和 20 公里处。微塑料根据颜色和形状进行定量和分类，并通过微衰减全反射-FT-IR 进行分析。在所有样本中都发现了微塑料，尽管存在高时空变异性。在 3 月，佩拉斯特里纳测线的近海站（10.4 个颗粒/米）和波河三角洲的两个内陆站（2.1 和 4.3 个颗粒/米）观察到最高浓度，突出了各种因素的影响，如表面流和河流排放，在确定特定的积累模式方面的作用。最常见的聚合物是聚乙烯和聚丙烯，而大多数颗粒是二次微塑料（83.5%）。研究区域观察到的微塑料的斑块分布是由作用于短时间尺度的水动力和气象因素驱动的。
