Phytoextraction of heavy metals by canola (Brassica napus) and radish (Raphanus sativus) grown on multicontaminated soil

Marchiol, Luca; Assolari, Silvia; Sacco, Pasqualina; Zerbi, G.

doi:10.1016/j.envpol.2004.04.001

Cited by 414 publications

(170 citation statements)

References 35 publications

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“…This contradiction has affected the multi-metal extraction efficiency. To solve this problem, researchers have investigated multi-metal hyperaccumulators (Abu Bakar et al 2013, Keller 2006, Marchiol et al 2004, Shahid et al 2012. P. vittata can accumulate As, Pb (Wan et al 2014), Cr (Su et al 2005), and Sb, although not in a single population.…”

Section: Discussionmentioning

confidence: 99%

Interaction of As and Sb in the hyperaccumulator Pteris vittata L.: changes in As and Sb speciation by XANES

Wan

Lei

Chen

2016

Environ Sci Pollut Res

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Arsenic (As) and antimony (Sb) are chemical analogs that display similar characteristics in the environment. The As hyperaccumulator Pteris vittata L. is a potential AsSb co-accumulating species. However, when this plant is exposed to different As and Sb speciation, the associated accumulating mechanisms and subsequent assimilation processes of As and Sb remain unclear. A 2-week hydroponic experiment was conducted by exposing P. vittata to single AsIII, AsV, SbIII, and SbV or the co-existence of AsIII and SbIII and AsV and SbV. P. vittata could co-accumulate As and Sb in the pinna (>1000 mg kg −1 ) with high translocation (>1) of As and Sb from the root to the pinna. P. vittata displayed apparent preference to the trivalent speciation of As and Sb than to the pentavalent speciation. Under the single exposure of AsIII or SbIII, the pinna concentration of As and Sb was 84 and 765 % higher than that under the single exposure of AsV or SbV, respectively. Despite the provided As speciation, the main speciation of As in the root was AsV, whereas the main speciation of As in the pinna was AsIII. The Sb in the roots comprised SbV and SbIII when exposed to SbV but was exclusively SbIII when exposed to SbIII. The Sb in the pinna was a mixture of SbV and SbIII regardless of the provided Sb speciation. Compared with the single exposure of As, the coexistence of As and Sb increased the As concentration in the pinna of P. vittata by 50-66 %, accompanied by a significant increase in the AsIII percentage in the root. Compared with the single exposure of Sb, the co-existence of Sb and As also increased the Sb concentration in the pinna by 51-100 %, but no significant change in Sb speciation was found in P. vittata.

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Section: Discussionmentioning

confidence: 99%

Interaction of As and Sb in the hyperaccumulator Pteris vittata L.: changes in As and Sb speciation by XANES

Wan

Lei

Chen

2016

Environ Sci Pollut Res

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“…Lead and zinc together in the soil affect the increasing of lead concentration in stems and much lower content of lead in the roots of the oilseed rape, compared with the process conducted in the soil contaminated only through one heavy metal [14]. The oilseed rape shows moderate tolerance to heavy metals and can be used in land remediation moderately polluted with heavy metals [15][16].…”

Section: Fig 6 Wb Coefficients For Zincmentioning

confidence: 99%

The bioaccumulation of heavy metals inBrassica napusL. in the area around Turów Power Station, Poland

Niedźwiecka

Zamorska-Wojdyła

2017

E3S Web Conf.

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Abstract. Brassica napus L. is a known bioaccumulator of copper, zinc, cadmium, lead, chromium, nickel and arsenic from soils. The metal ions are accumulated in the roots, stems, leaves and seeds of the oilseed rape. The samples of soils and plants were collected in the area around the Turów power station (Bogatynia city, Lower Silesia). The soil samples were collected from the surface layer of 0-25 cm. Roots, stems and pods of the oilseed rape were used in the study. The environmental samples were digested in HNO 3 , 60%, using the Microwave Digestion System. Metal concentrations have been dermined through the FAAS method. Three heavy metals -zinc, copper and lead -have been analyzed. The content of zinc was higher than the content of copper in all samples (plants and soils). In the roots of the oilseed rape higher concentration of metals compared to other parts of the plant was observed. In the soil samples, there was no correlation between the concentration of pollution and the distance from the power plant. Permissible concentrations of heavy metals relative to the standard according to the Polish Ministry of Environment Regulation from September 1 st , 2016, have not been exceeded. The permissible pollution indexes (Wn) in soils were exceeded compared to the geochemical background in uncontaminated soils of Poland. The bioaccumulation coefficients of heavy metals indicate lower metal concentrations in plants than in soils

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“…Metals such as Cd, Zn, and Cu may cause severe toxicity to plants even before chelators are added to soil (Sun et al, 2001;Marchiol et al, 2004;Wu et al, 2004). Such an inhibition of plant growth limits phytoextraction success.…”

Section: The Use Of Chemical Amendments To Enhance Metal Phytoextractmentioning

confidence: 99%

Phytoextraction: a review on enhanced metal availability and plant accumulation

Nascimento

Xing

2006

Sci. agric. (Piracicaba, Braz.)

208

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Phytoextraction has emerged as a novel approach to clean up metal-polluted soils in which plants are used to transfer toxic metals from soils to shoots. This review provides a synthesis of current knowledge on phytoextraction of metals from soils and their accumulation in plants. The objective is to integrate soil-related (root exudates and chemical amendments) and biological advances to suggest research needs and future directions. As far as can be deduced from the literature, it will be some time before phytoextraction may be established as a commercial technology. For chemically-assisted phytoextraction, research has not shown easily biodegradable compounds to overcome the risks associated with the use of EDTA for poorly available metals in soils. On the other hand, significant progress has been made on the physiological and molecular aspects regarding tolerance and phytoaccumulation of metals in plants. A multidisciplinary approach is warranted to make phytoextraction a feasible commercial technology to remediate metal-polluted soils. Key words: EDTA, phytoremediation, heavy metals, organic acids FITOEXTRAÇÃO: UMA REVISÃO SOBRE DISPONIBILIDADE INDUZIDA E ACUMULAÇÃO DE METAIS EM PLANTASRESUMO: A fitoextração é uma tecnologia emergente para despoluição de solos contaminados por metais pesados que usa plantas para transferir metais do solo para a parte aérea, a qual pode ser removida da área poluída. Esta revisão apresenta uma síntese do atual conhecimento sobre fitoextração de metais pesados do solo e sua acumulação em plantas. O objetivo é integrar em uma mesma discussão os avanços relacionados à química do solo (exsudação radicular e adição de agentes quelantes para aumentar a absorção) e à biologia (tolerância a metais e melhoramento genético) visando sugerir futuras pesquisas na área. Embora promissor, o atual estado de desenvolvimento da fitoextração ainda não permite estabelecê-la como uma tecnologia comercial. A pesquisa ainda não encontrou agentes quelantes facilmente biodegradáveis que possam substituir o EDTA na solubilização de metais pouco disponíveis em solos. Entretanto, significativos progressos têm sido feitos no entendimento dos mecanismos fisiológicos e moleculares de tolerância e acumulação de metais em plantas. Uma abordagem multidisciplinar dos vários aspectos que envolvem a fitoextração poderá tornar essa tecnologia econômica e ambientalmente viável a médio prazo. Palavras-chave: EDTA, fitorremediação, metais pesados, ácidos orgânicos

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Phytoextraction of heavy metals by canola (Brassica napus) and radish (Raphanus sativus) grown on multicontaminated soil

Cited by 414 publications

References 35 publications

Interaction of As and Sb in the hyperaccumulator Pteris vittata L.: changes in As and Sb speciation by XANES

Interaction of As and Sb in the hyperaccumulator Pteris vittata L.: changes in As and Sb speciation by XANES

The bioaccumulation of heavy metals inBrassica napusL. in the area around Turów Power Station, Poland

Phytoextraction: a review on enhanced metal availability and plant accumulation

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