Bioaccumulation and toxicity studies of macroalgae (Charophyceae) treated with aluminium: Experimental studies in the context of lake restoration.
Bioaccumulation and toxicity studies of macroalgae (Charophyceae) treated with aluminium: Experimental studies in the context of lake restoration.
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用铝处理的大型藻类（轮藻纲）的生物累积和毒性研究：湖泊恢复背景下的实验研究。
DOI：
10.1016/j.ecoenv.2017.07.056
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发表时间：
2017
影响因子：
6.8
通讯作者：
M. Gąbka
中科院分区：
文献类型：
--
作者：
M. Rybak;A. Kołodziejczyk;T. Joniak;I. Ratajczak;M. Gąbka
本研究的目的是探讨铝对多年生大型藻类CharahispidaL的影响。以及它的生物累积能力。铝（Al）以聚合氯化铝的形式被引入环境，聚合氯化铝是一种用于水体修复的试剂。研究是在一个实验环境中进行的，使用mesocosm（体积0.8 m3）放置在一个湖泊的沿岸的区与C。施用三种剂量的促凝剂，每种剂量具有不同的体积：低- 6.1 g Al m−3、中- 12.2 g m− 3和高- 24.5 g Al m−3。确定了环境的显著酸化，这意味着存在有毒的Al 3+离子。铝在轮藻细胞中的渗透和积累已被证实。这对菌体造成了损害，表现为叶绿体、坏死、皮质细胞剥落和菌体软化，其严重程度与凝结剂的剂量成正比。24小时后观察到第一个阴性体征。研究表明，C. hispidais是一种差的铝积累者（生物富集因子< 200），而在约100 μ g/L的浓度下，生物富集能力受到抑制。2.0 mg Al g−1d.w.积累在轮藻的叶状体占58%的变化后，从环境中去除铝。实验结果表明，铝对轮藻的负面影响，在积极恢复湖泊中使用的浓度。
The objective of this study was to examine the impact of aluminium on the perennial macroalgaeCharahispidaL. and its bioaccumulation capacities. Aluminium (Al) was introduced into the environment in the form of polyaluminium chloride, an agent utilized in the restoration of waterbodies. Research was conducted in an experimental setting usingmesocosms (volume 0.8 m3) placed in the littoral zone of a lake withC. hispida.Three doses of the coagulant were applied, each with a different volume: low – 6.1 g Al m−3, medium – 12.2 g m−3and high – 24.5 g Al m−3. A significant acidification of environment was determined, which would imply the presence of toxic Al3+ions. It has been demonstrated that aluminium penetrates and accumulates in the cells of the charophyte. This caused damage to the thalli, which manifested itself in chloroses, necroses, flaking of the cortex cells and softening of the thallus, whose severity was proportionate to the dose of the coagulant. The first negative signs were observed after 24 h. The study shows thatC. hispidais a poor accumulator of aluminium (bioconcentration factor < 200), while bioaccumulation capacity was inhibited at the concentration of approx. 2.0 mg Al g−1d.w. Accumulation in the thalli of the charophytes accounted for 58% of variation following removal of aluminium from the environment. The results of the experiment demonstrate a negative impact of aluminium on charophytes at concentrations used in aggressive restoration of lakes.