Monosilicic acid potential in phytoremediation of the contaminated areas
Monosilicic acid potential in phytoremediation of the contaminated areas
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DOI：
10.1016/j.chemosphere.2016.05.029
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发表时间：
2016-08-01
期刊：
影响因子：
8.8
通讯作者：
Matichenkov, Vladimir
中科院分区：
文献类型：
--
作者：
Ji, Xionghui;Liu, Saihua;Matichenkov, Vladimir
重金属对农业地区的污染对食品质量和人类健康产生了负面影响。各种修复技术已被开发用于去除和/或固定污染土壤中的重金属（HM）。植物修复技术是一种创新技术，具有成本低、易监测、选择性强等优点，但也存在操作时间长、污染物对植物的负面影响等局限性。温室研究表明，单甘酯酸可用于调节重金属（Cd、Cr、Pb和Zn）在土壤-植物系统中的迁移。当土壤溶液中硅的浓度从0增加到20 mg L ~（-1）时，HM的生物有效性增加30- 150%。但施用单甘氨酸后，HM对大麦的负面影响有所减轻。当单油酸浓度增加到20 mg L ~（-1）以上时，重金属在土壤中的迁移率降低40-300%，植物对重金属的吸收量减少2-3倍。单油酸的使用可以提高植物修复效率。然而，在某些地区的植物修复技术的调整将是必要的。(C)2016爱思唯尔有限公司版权所有。
The contamination of agricultural areas by heavy metals has a negative influence on food quality and human health. Various remediation techniques have been developed for the removal and/or immobilization of heavy metals (HM) in contaminated soils. Phytoremediation is innovative technology, which has advantages (low cost, easy monitoring, high selectivity) and limitations, including long time for procedure and negative impact of contaminants on used plants. Greenhouse investigations have shown that monosilicic acid can be used for regulation of the HM (Cd, Cr, Pb and Zn) mobility in the soil-plant system. If the concentration of monosilicic acid in soil was increased from 0 to 20 mg L-1 of Si in soil solution, the HM bioavailability was increased by 30-150%. However, the negative influence on the barley by HM was reduced under monosilicic acid application. If the concentration of monosilicic acid was increased more than 20 mg L-1, the HM mobility in the soil was decreased by 40-300% and heavy metal uptake by plants was reduced 2-3 times. The using of the monosilicic acid may increase the phytoremediation efficiency. However the technique adaptation will be necessary for phytoremediation on certain areas. (C) 2016 Elsevier Ltd. All rights reserved.