School of Pharmacy and Life Sciences, Robert Gordon University, Aberdeen AB10 7JG, UK; Marine Scotland Science, Marine Laboratory, 375 Victoria Road, Aberdeen AB11 9DB, UK.
School of Pharmacy and Life Sciences, Robert Gordon University, Aberdeen AB10 7JG, UK.
Mar Pollut Bull. 2021 Dec;173(Pt A):112929. doi: 10.1016/j.marpolbul.2021.112929. Epub 2021 Sep 14.
To be able to assess progress towards "Good Environmental Status" adopted across European Member States, and by the United Kingdom through its 3-stage Marine Strategy, contaminant concentrations and their biological effects need to be assessed in environmental samples by comparison to assessment criteria. This study examines the variability of concentrations (inter- and intra- species variation) of three priority heavy metals (Hg, Cd and Pb) and six additional trace metals and metalloids (As, Ni, Se, Zn, Cu and Cr) in twenty-three species across four trophic levels from different locations around Scotland. Trophic magnification factors (TMFs) were calculated using two methods for metals/metalloids possessing a significant trophic relationship (Hg, Cd, Cu, Ni and Zn) to refine and improve the application of TMFs to assess and predict biomagnification risk of metals/metalloids to biota in the environment. It was concluded that a reasonable balance in sample numbers of lower- versus higher-trophic level organisms is highly recommended when calculating TMFs and appropriate species selection is vital to ensure TMFs accurately represent the selected ecosystem.
为了能够评估欧洲成员国通过其 3 阶段海洋战略所采用的“良好环境状况”的进展情况，需要通过与评估标准进行比较，来评估环境样本中污染物浓度及其生物效应。本研究检测了来自苏格兰不同地区的 23 种不同营养级别的 23 种优先重金属（汞、镉和铅）和 6 种额外的痕量金属和类金属（砷、镍、硒、锌、铜和铬）的浓度（种间和种内变化）。使用两种方法计算了具有显著营养关系的金属/类金属（汞、镉、铜、镍和锌）的营养放大因子（TMF），以细化和改进 TMF 的应用，从而评估和预测金属/类金属在环境中生物群的生物放大风险。研究结论认为，在计算 TMF 时，强烈建议在较低营养级别的生物体与较高营养级别的生物体的样本数量之间取得合理的平衡，并且适当的物种选择对于确保 TMF 准确代表所选生态系统至关重要。
