Department of Diagnostic Radiology and Nuclear Medicine, Gunma University Graduate School of Medicine, Maebashi, Japan.
Department of Nuclear Medicine and Molecular Imaging, Universitas Padjajaran, Bandung, Indonesia.
Int J Phytoremediation. 2022;24(9):893-901. doi: 10.1080/15226514.2021.1984388. Epub 2021 Oct 6.
Many studies have demonstrated the (water hyacinth) potency in removing heavy metals, but the plant's potential for sorption of gadolinium (Gd) has not yet been investigated. In this study, water hyacinth was grown in a glass container for 30 days with either GdCl or Gd-based contrast agent (GBCA; gadoterate) with water obtained from the Tone River. On the day 30, the Gd concentration in both the water and the plants was measured by mass spectrometry (ICP-MS). After 30 days, 98.5% of GdCl in the water had been absorbed by the roots, and 3.5% of Gd was transferred to the leaves. On the other hand, the water hyacinth roots absorbed only 12% of the gadoterate. When exposed to 5 mg/L of GdCl, the roots of water hyacinth may effectively remove Gd ions in the aquatic environment, with no visible effect on the general health of the plant. However, the water hyacinth roots did not absorb GBCA. This may result in higher accumulation of Gd in the aqueous environment. The GBCA may be broken down by environmental factors and negatively affect the marine ecosystem.
许多研究已经证明水葫芦去除重金属的能力，但该植物对钆（Gd）的吸附潜力尚未得到研究。在这项研究中，水葫芦在一个玻璃容器中生长了 30 天，容器中分别加入 GdCl 或基于 Gd 的造影剂（GBCA；钆喷替酸葡胺），用水取自 Tone 河。在第 30 天，通过质谱法（ICP-MS）测量水和植物中的 Gd 浓度。30 天后，水中 98.5%的 GdCl 被根部吸收，3.5%的 Gd 转移到叶片。另一方面，水葫芦的根只吸收了 12%的钆喷替酸葡胺。当暴露于 5mg/L 的 GdCl 时，水葫芦的根部可能会有效地去除水生环境中的 Gd 离子，而对植物的整体健康没有明显影响。然而，水葫芦的根并没有吸收 GBCA。这可能导致水中 Gd 的积累增加。GBCA 可能会被环境因素分解，并对海洋生态系统产生负面影响。
