【摘 要】
:
The potential of kenaf (Hibiscus cannabinus L.) for phytoremediation of lead (Pb) on sand tailings was investigated. A pot experiment employing factorial design
【机 构】
:
Forest Research Institute Malaysia,Department of Forest Sciences
论文部分内容阅读
The potential of kenaf (Hibiscus cannabinus L.) for phytoremediation of lead (Pb) on sand tailings was investigated. A pot experiment employing factorial design with two main effects of fertilizer and lead was conducted in a nursery using sand tailings from an ex-tin mine as the growing medium. Results showed that Pb was found in the root, stem, and seed capsule of kenaf but not in the leaf.Application of organic fertilizer promoted greater biomass yield as well as higher accumulation capacity of Pb. In Pb-spiked treatments,roots accumulated more than 85% of total plant Pb which implies that kenaf root can be an important sink for bioavailable Pb. Scanning transmission electron microscope (STEM) X-ray microanalysis confirmed that electron-dense deposits located along cell walls of kenaf roots were Pb precipitates. The ability of kenaf to tolerate Pb and avoid phytotoxicity could be attributed to the immobilization of Pb in the roots and hence the restriction of upward movement (translocation factor< 1). With the application of fertilizer, kenaf was also found to have higher biomass and subsequently higher bioaccumulation capacity, indicating its suitability for phytoremediation of Pb-contaminated site.
其他文献
[目的]探讨家蚕品种ZHG×春54在云南省秋季气候条件下小蚕颗粒人工饲料育的效果.[方法]采用小蚕颗粒人工饲料育、大蚕桑叶育的饲养形式,探讨ZHG×春54在云南秋季气候条件下对
Atmospheric carbon dioxide [CO2] has increased dramatically within the current life spans of long-lived trees and old forests. Consider that a 500-year-old tree
Wet carbon-based solid acid and potassium permanganate were used as new reagents for oxidation of alcohols to their corresponding aldehydes and ketones in heter
The adsorption behaviors of Hg(Ⅱ) on laterite from Guizhou Province, China, were studied and the adsorption mechanism was discussed. The results showed that di
At present, all kinds of municipal solid waste incineration (MSWI) fly ash stabilization technology has been reported and successfully applied in many countries
碱性黄Ⅱ为芳香胺类碱性工业染料,严禁将其作为食品添加剂使用,但将其作为染色剂添加到食品中的违法行为屡禁不止.因此快速、准确地检测食品中碱性黄Ⅱ具有重要意义.介绍了含
A series of tests (lethal, sublethal, and behavioral) on earthworms were conducted as an eeo-assessment of pesticides. In this study, the toxicity of cypermethr
Background Decayed teeth are harmful to childrens growth and development and can severely jeopardize their health.This study was set out to investigate and anal
This review focuses on individual effects of major global change factors, such as elevated CO2, Oa, UV light and temperature,on plant secondary chemistry. These
Nitrous oxide (N2O) fluxes from soils were measured using the closed chamber method during the snow-free seasons (middle April to early November), for three yea