Abstract This study reports the efficiency of Saccharum spontaneum and Saccharum munja for phytoextraction and phytostabilization of metal-contaminated coal fly ash (FA) dumpsites. Pot experiments with FA and garden soil (GS) as control were conducted for a period of one year. Heavy metals in FA and their relative translocation to root and shoot tissues were analyzed. The accumulation of heavy metals in the roots was higher than the shoots. A considerable amount of heavy metals was sequestered and accumulated by the roots but the amount of contaminants was not translocated to the shoot system. This could be supported by the translocation factor (TF) values. Values of bioaccumulation factor (BAF) greater than unity indicated that Saccharum is a potential heavy metal accumulator. The BAF values for roots in S. spontaneum plants grown on FA were higher (8.01, 1.40, 3.02, 0.92, 1.66 and 1.47 for Zn, Pb, Cu, Ni, Cd and As, respectively) than those of S. munja (Zn – 8.54, Pb – 1.66, Cu – 3.24, Ni – 0.76, Cd – 1.63 and As – 1.41). The BAF of the metals was less than unity in shoots. This is congruent with the results on DNA damage that increased significantly in the root cells and remained unaffected in the shoot. Results suggest that the plants are suitable for extracting Zn, Cu, Cd, Pb and As from FA and stabilize them in the underground plant parts. Therefore, for long-term management and restoration of FA, use of Saccharum plants for phytoremediation will be an effective strategy.

中文翻译：

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从粉煤灰中植物提取重金属以修复粉煤灰垃圾场

摘要 本研究报告了 Saccharum spontaneum 和 Saccharum munja 对金属污染粉煤灰 (FA) 垃圾场的植物提取和植物稳定的效率。以 FA 和花园土壤 (GS) 作为对照的盆栽试验进行了一年。分析了 FA 中的重金属及其相对于根和芽组织的易位。根部重金属的积累量高于地上部。大量的重金属被根部隔离和积累，但大量的污染物没有转移到枝条系统。这可以得到易位因子 (TF) 值的支持。大于 1 的生物蓄积因子 (BAF) 值表明甘蔗是潜在的重金属蓄积剂。S 中根的 BAF 值。FA 上生长的自发植物（Zn、Pb、Cu、Ni、Cd 和 As 分别为 8.01、1.40、3.02、0.92、1.66 和 1.47）高于 S. munja（Zn – 8.54，Pb – 1.66，Cu – 3.24，Ni – 0.76，Cd – 1.63 和 As – 1.41）。金属的 BAF 在枝条中小于统一。这与 DNA 损伤的结果一致，DNA 损伤在根细胞中显着增加，而在芽中不受影响。结果表明，该植物适合从 FA 中提取 Zn、Cu、Cd、Pb 和 As，并将它们稳定在植物地下部分。因此，对于 FA 的长期管理和恢复，利用甘蔗植物进行植物修复将是一个有效的策略。41)。金属的 BAF 在枝条中小于统一。这与 DNA 损伤的结果一致，DNA 损伤在根细胞中显着增加，而在芽中不受影响。结果表明，这些植物适合从 FA 中提取 Zn、Cu、Cd、Pb 和 As，并将它们稳定在地下植物部分。因此，对于 FA 的长期管理和恢复，利用甘蔗植物进行植物修复将是一个有效的策略。41)。金属的 BAF 在枝条中小于统一。这与 DNA 损伤的结果一致，DNA 损伤在根细胞中显着增加，而在芽中不受影响。结果表明，这些植物适合从 FA 中提取 Zn、Cu、Cd、Pb 和 As，并将它们稳定在地下植物部分。因此，对于 FA 的长期管理和恢复，利用甘蔗植物进行植物修复将是一个有效的策略。