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Phytoremediation of soil co-contaminated with Cd and BDE-209 using hyperaccumulator enhanced by AM fungi and surfactant
Science of the Total Environment ( IF 8.2 ) Pub Date : 2017-09-14 , DOI: 10.1016/j.scitotenv.2017.09.066
Hui Li , Xing Li , Lei Xiang , Hai Ming Zhao , Yan Wen Li , Quan Ying Cai , Li Zhu , Ce Hui Mo , Ming Hung Wong

Pot experiments were conducted to investigate the uptake and translocation of both Cd and decabromodiphenyl ether (BDE-209) in Solanum nigrum, under the treatments of two arbuscular mycorrhizal fungi [AMF, Funneliformis mosseae (FM) and Rhizophagus intraradices (RI)] and surfactant β-cyclodextrin (β-CD). Results showed that S. nigrum treated with either FM or β-CD significantly elevated shoot biomass and Cd concentrations and contents in shoots. The concentrations of BDE-209 in shoots and the dissipation and debromination efficiencies of BDE-209 in soil were significantly enhanced in S. nigrum treated with β-CD, inoculated with or without AMF. Moreover, significant positive correlations were found between the BDE-209 dissipation efficiency, the BDE-209 concentrations and contents in roots, and the soil enzymatic activities (polyphenol oxidase or dehydrogenase activities) and between the Cd and BDE-209 contents in shoots or roots. Higher concentrations of lower-brominated products and total PBDEs were detected in shoots than in roots suggesting that BDE-209 might be initially absorbed by roots, then translocated to shoots, and then degraded into lower brominated products in shoots. Considering the plant uptake of Cd and BDE-209 and the efficient removal of those chemicals in soils, the combination of S. nigrum and β-CD inoculated with or without AMF may be viable alternatives for phytoremediation of the co-contaminated soil.

中文翻译:

利用AM真菌和表面活性剂增强的高蓄积剂对Cd和BDE-209共污染的土壤进行植物修复

在两种丛枝菌根真菌[AMF,Funneliformis mosseae(FM)和Rhizophagus intraradices(RI)]和表面活性剂的处理下,通过盆栽实验研究了镉和十溴二苯醚(BDE-209)在黑茄中的吸收和转运。β-环糊精(β-CD)。结果表明,S。用FM或β-CD处理的黑麦可以显着提高枝条中的生物量和Cd浓度及含量。显着增强了芽中BDE-209的浓度,以及BDE-209在土壤中的消解和脱溴效率。黑龙用β-CD治疗,接种或不接种AMF。此外,发现BDE-209的消散效率,根中BDE-209的浓度和含量与土壤酶活性(多酚氧化酶或脱氢酶活性)之间以及茎或根中的Cd和BDE-209含量之间存在显着的正相关关系。 。芽中检出的低溴化产物和总PBDEs浓度高于根部,这表明BDE-209可能最初被根吸收,然后转移到芽中,然后降解为芽中的低溴化产物。考虑到植物对Cd和BDE-209的吸收以及对土壤中那些化学物质的有效去除,S的组合。黑龙 接种或不接种AMF的β-CD可能是对受污染土壤进行植物修复的可行替代方法。
更新日期:2017-09-15
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