盐碱基质对植物修复的影响。对土壤中镉的生物吸附剂

IF 1.3 Q4 ENVIRONMENTAL SCIENCES
A. Doghbage, Hassen Boukerker, Fathi Abdellatif Belhouadjeb, B. Nedjimi
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引用次数: 0

摘要

背景:土壤污染问题是新兴国家关注的一个主要问题。铅、镉、铜、锌和汞等重金属无法生物降解,因此会在环境中长期存在。开发有效的净化污染土壤的技术已经变得至关重要。其中一种技术,植物修复,在经济上是可行的,并且符合环境保护政策。植物修复在含盐地区的应用需要使用能够耐受重金属和高土壤盐度的植物。Atriplex halimus是一种具有巨大净化潜力的物种,是一种自发的盐生植物,具有相当重要的地上和根系生物量。本研究旨在测定硫酸镉(CdSO4)对大毒藻发芽和生长的影响,并评估其积累镉和脯氨酸的能力。方法:采用体内试验的方法,对大比目鱼对CdSO4浓度增加的耐受性进行了实验研究。本研究旨在评估该多年生物种对不同浓度CdSO4的耐受程度。结果:CdSO4对种子发芽率及地上部和根部生长的影响不显著。然而,观察到脯氨酸的显著积累,特别是在地上部分,而镉含量最高的是在根部。结论:本种可用于重金属污染土壤的植物修复。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Phytoremediation by using Atriplex halimus subsp. schweinfurthii as a bio-absorbent of Cadmium in the soil
Background: The problem of soil contamination is a major concern of emerging countries. Heavy metals such as lead, cadmium, copper, zinc, and mercury cannot be biodegraded, and therefore, persist in the environment for long periods. It has become essential to develop efficient techniques for decontamination of polluted soils. One of these techniques, phytoremediation, is economically viable and compatible with environmental preservation policies. The application of phytoremediation in salty areas requires the use of plants that are able to tolerate heavy metals and high soil salinity. Atriplex halimus is one of the species with a great purification potential, which is a spontaneous halophyte species, and endowed with a fairly important aerial and root biomass. This study aimed to determine the effect of cadmium sulfate (CdSO4 ) on the germination and growth of A. halimus, and to assess its ability to accumulate cadmium and proline. Methods: This is an experimental study of the tolerance of A. halimus to increasing concentrations of CdSO4 by an in vivo test. This study aimed to assess the degree of tolerance of this perennial species towards different concentrations of CdSO4 . Results: The results show a non-significant effect of CdSO4 on the seed germination rate and growth of the aerial and root parts. However, a significant accumulation of proline was observed especially in the aerial part, whereas the highest cadmium content was recorded at the roots. Conclusion: According to the results, this species can be used in phytoremediation to decontaminate soils contaminated by heavy metals.
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来源期刊
CiteScore
2.40
自引率
37.50%
发文量
17
审稿时长
12 weeks
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