A.O. Kovalevsky Institute of Biology of the Southern Seas of the Russian Academy of Sciences, 2 Nakhimov Ave., Sevastopol, Russia.
A.O. Kovalevsky Institute of Biology of the Southern Seas of the Russian Academy of Sciences, 2 Nakhimov Ave., Sevastopol, Russia.
Environ Res. 2024 Sep 15;257:119380. doi: 10.1016/j.envres.2024.119380. Epub 2024 Jun 6.
The study of the element accumulation in marine plants against the backdrop of permanently increasing environmental pollution is of particular importance due to the participation of these plants in biogeochemical cycles. The element abundances are highly variable and depend on both the macrophyte species and environment. The purpose of this study was to analyze the elemental composition of widespread marine plants of different taxonomic affiliations collected in the same area of the Black Sea coast. The contents of 74 elements in three species of lower (red, brown, green algae) and one species of higher plants (seagrass) were analyzed using inductively coupled plasma mass spectrometry. High contents of most elements were found in the red alga Ceramium ciliatum and in rhizomes of the seagrass Zostera noltei. In C. ciliatum, high metal bioaccumulation factors were found, which are dependent also on their concentration in the environment. Compared to the higher plant, all the macroalgae accumulated increased amounts of As and I. The seagrass proved to be a good concentrator of Mo and Sb, and relatively high contents of Mn, Co, Ni, Zn, Cd and Ir were registered in its leaves. High contents of Mg, S, Ge, Se and Ta were found in the green alga Ulva rigida, and elevated levels of Al, As, Sr, Zr, Ru, Rh, Pd, Ag, Ba and Re were noted in the brown alga Gongolaria barbata. The enrichment factors for most elements in the sediments were well above 1 with respect to both the local Late Pleistocene sediments and the upper continental crust. The strength of correlations between the element contents in the plants and sediments was found to decrease with the specific surface area growth and appeared to have a lower asymptotic limit of the sediments-seawater correlation strength.
本研究分析了黑海海岸同一地区不同分类群的广泛分布的海洋植物的元素组成。采用电感耦合等离子体质谱法分析了 3 种低等植物（红藻、褐藻、绿藻）和 1 种高等植物（海草）中 74 种元素的含量。红藻 Ceramium ciliatum 和海草 Zostera noltei 的根茎中发现了大多数元素的高含量。在 C. ciliatum 中，发现了高金属生物积累因子，这些因子也依赖于它们在环境中的浓度。与高等植物相比，所有大型藻类都积累了更多的 As 和 I。海草被证明是 Mo 和 Sb 的良好浓缩剂，其叶片中还登记了相对较高含量的 Mn、Co、Ni、Zn、Cd 和 Ir。绿藻 Ulva rigida 中含有高含量的 Mg、S、Ge、Se 和 Ta，褐藻 Gongolaria barbata 中含有高含量的 Al、As、Sr、Zr、Ru、Rh、Pd、Ag、Ba 和 Re。相对于当地晚更新世沉积物和上地壳，沉积物中大多数元素的富集因子均高于 1。植物和沉积物中元素含量之间的相关性强度随着比表面积的增长而降低，并且似乎具有沉积物-海水相关性强度的较低渐近极限。
