Department of Biology, College of Science for Women, University of Baghdad, Iraq.
Ministry of Science and Technology/Food Contamination Research Center, Iraq.
Mar Pollut Bull. 2023 Sep;194(Pt A):115401. doi: 10.1016/j.marpolbul.2023.115401. Epub 2023 Aug 30.
This study investigates the microplastics (MPs) pollution in Tigris River, assessing spatial and temporal variations in water and sediment. MPs presence was high during both seasons 3429.2 MPs/m (dry season) and 3363.2 MPs/m (wet season) in water, and 121.2 MPs/kg (wet season) and 123.2 MPs/kg (dry season) in sediment. MPs morphology mostly consisted of fibers and fragments, with sizes below 0.5 mm. Transparent and white were the most common colors, and they were primarily composed of polyethylene (PE) and polypropylene (PP). Ecological risk assessment, using the plastic hazard index (PHI), pollution load index (PLI), and potential ecological risk index (PERI), categorized the risk from danger to extreme danger based on PHI, while PLI and PERI indicated a minor risk. These findings provide initial evidence of microplastics pollution in the Tigris River's water and sediment, emphasizing the need for action by decision-makers to mitigate these risks.
本研究调查了底格里斯河的微塑料（MPs）污染，评估了水和沉积物中 MPs 的时空变化。在两个季节中，MPs 的存在都很高，水中分别为 3429.2 MPs/m（旱季）和 3363.2 MPs/m（雨季），沉积物中分别为 121.2 MPs/kg（雨季）和 123.2 MPs/kg（旱季）。MPs 的形态主要为纤维和碎片，尺寸小于 0.5 毫米。最常见的颜色是透明和白色，它们主要由聚乙烯（PE）和聚丙烯（PP）组成。使用塑料危害指数（PHI）、污染负荷指数（PLI）和潜在生态风险指数（PERI）对生态风险进行评估，根据 PHI 将风险分为危险到极度危险，而 PLI 和 PERI 则表明存在较小的风险。这些发现为底格里斯河水中和沉积物中微塑料污染提供了初步证据，强调决策者需要采取行动来减轻这些风险。
