Simultaneous suppression of magnetic nanoscale powder and fermented bark amendment for arsenic and cadmium uptake by radish sprouts grown in agar medium
Simultaneous suppression of magnetic nanoscale powder and fermented bark amendment for arsenic and cadmium uptake by radish sprouts grown in agar medium
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DOI：
10.1007/s11356-019-04756-4
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发表时间：
2019-03
影响因子：
5.8
通讯作者：
Xiaotong Sun;Huijiao Mo;K. Hatano;H. Itabashi;M. Mori
中科院分区：
文献类型：
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作者：
Xiaotong Sun;Huijiao Mo;K. Hatano;H. Itabashi;M. Mori
在这项研究中，我们有效地抑制砷和镉吸收到植物中使用磁性纳米粒子粉末（MNP）和发酵树皮修正剂（FBA）在琼脂培养基。MNP（由FeO·Fe 2 O3组成）定量吸附As（III），FBA（主要由树皮废料组成）吸附Cd，与pH值无关。根据萝卜苗中砷和镉的含量，比较了MNP和FBA在琼脂培养基中的性质。而添加FBA选择性地抑制萝卜吸收镉，添加MNP抑制砷和镉的吸收。考虑到即使在没有任何添加剂的琼脂中，分析物的吸收也略有减少，琼脂本身也可能有助于抑制植物对分析物的吸收。此外，即使在含有砷和镉（各100 μg/L）的琼脂中培养萝卜芽，每25 mL琼脂中混合25 g MNP和1.25 g FBA，砷和镉的吸收分别比不含添加剂的琼脂减少90%和82%。此外，加入混合修正案琼脂加速萝卜的生长，而MNP显着抑制萝卜的生长，即使它减少了分析物的吸收。结果表明，在镉、砷污染的琼脂培养基中，无机和有机吸附剂的混合可以同时抑制植物对镉、砷的吸收，促进植物生长。
In this study, we effectively suppressed arsenic and cadmium uptake into a plant using magnetic nanoparticle powder (MNP) and fermented bark amendment (FBA) in agar medium. The MNP (which consists of FeO·Fe2O3) quantitatively adsorbed arsenite (As(III)) and the FBA (which mainly consists of bark waste) adsorbed cadmium, regardless of the pH. The properties of MNP and FBA in agar medium were compared based on the amounts of arsenic and cadmium in cultivated radish sprouts. While adding FBA selectively suppressed cadmium uptake by radishes, adding MNP suppressed the uptake of both arsenic and cadmium. Considering that the uptake of analytes was slightly reduced even in agar without any additives, the agar itself might also have contributed to the suppression of analyte uptake into plants. In addition, even when radish sprouts were cultivated in agar containing arsenic and cadmium (100 μg/L each) mixed with 25 g MNP and 1.25 g FBA per 25 mL agar, arsenic and cadmium absorption decreased by 90% and 82%, respectively, versus agar without additives. Furthermore, adding the mixed amendment to agar accelerated the growth of radishes, whereas MNP significantly inhibited radish growth even though it reduced analyte uptake. Our results indicated that mixing inorganic and organic adsorbents could simultaneously inhibit cadmium and arsenic uptake by plants and accelerate plant growth in the cadmium and arsenic-contaminated agar medium.