Screening of native plant species for phytoremediation potential at a Hg-contaminated mining site

Marrugo‐Negrete, José; Marrugo-Madrid, Siday; Pinedo‐Hernández, José; Durango-Hernández, José; Dı́ez, Sergi

doi:10.1016/j.scitotenv.2015.10.117

Cited by 115 publications

(68 citation statements)

References 32 publications

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“…As showed earlier, the Hg accumulation in plant shoots was low for plants treated with Hg, regardless its concentration (Table ). Based on TF values, most of Hg was accumulated in L. sativum L. roots, which can be explained by Hg binding to the cell walls to avoid toxic effects on the aerial parts . However, it should be also noticed that TF increased almost by 10% in L. sativum L. exposed to higher Hg concentration compared to lower concentration.…”

Section: Resultsmentioning

confidence: 99%

“…Additionally, the TF may increase as a result of Hg accumulation by the plant leaves from the air. Results presented by Marrugo‐Negrete et al concerning the Hg translocation by native plant species of El Alacran mine suggested that in soils with lower Hg concentration, where the atmospheric inputs are more significant than Hg translocation from the roots, TF is not useful . Hg in the atmosphere primarily influenced foliar uptake and root concentrations were related to the soil Hg concentrations .…”

Section: Resultsmentioning

confidence: 99%

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Activation of Non‐Enzymatic Antioxidants by Lepidium sativum L. Exposed to Hg During Assisted Phytoextraction

Smolińska

Bonikowski

2018

CLEAN Soil Air Water

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This study focuses on the physiological response of Lepidium sativum L. to Hg and/or nitrilotriacetic acid (NTA) during soil reclamation. Greenhouse experiments are conducted in soil contaminated with Hg to final concentrations of 10 or 100 mg kg−1. The influence of Hg and NTA is studied on the growth of L. sativum L. and the activation of its non‐enzymatic antioxidant system, including generation of ascorbic acid (AA) and tocopherols (TOCs). The results shows that Hg is accumulated by L. sativum L. in its aboveground tissues, but increased lipid peroxidation and H2O2 formation in the plant shoots, which is a symptom of oxidative stress. Plants exposed to Hg produced increasing amounts of AA and TOCs to protect their cells from oxidative damage. Application of NTA to polluted soil did not show any toxic effects on L. sativum L. growth or physiological processes. Amendment of polluted soil with NTA significantly increased Hg accumulation in the aerial tissues of L. sativum L., resulting in decreased soil contamination. The use of NTA can therefore be considered for use in assisted phytoextraction of Hg contaminated soil.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Activation of Non‐Enzymatic Antioxidants by Lepidium sativum L. Exposed to Hg During Assisted Phytoextraction

Smolińska

Bonikowski

2018

CLEAN Soil Air Water

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“…In one example, it was shown that Siam weed ( Chromolaena odorata ) could grow in nutrient‐supplemented ASGM tailings and accumulate mercury in its leaves without phytotoxicity . In another recent study at a Columbian gold mine, native plant species growing at mercury contaminated sites were also promising leads for removing and accumulating mercury from soil . In these and other strategies in phytoremediation of ASGM areas, careful planning for the fate of the biomass is required so that the heavy metal is ultimately removed from the environment and not simply re‐emitted by means of combustion, for example…”

Section: Health and Ecological Impactsmentioning

confidence: 99%

“…Another potential strategy in remediation and reclamation of mercury‐contaminated soil in ASGM areas is through phytoremediation . In this technique, plants are used to extract mercury from soil.…”

Section: Challenges and Opportunities For Chemistsmentioning

confidence: 99%

The Mercury Problem in Artisanal and Small‐Scale Gold Mining

Esdaile

Chalker

2018

Chemistry A European J

321

177

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Mercury‐dependent artisanal and small‐scale gold mining (ASGM) is the largest source of mercury pollution on Earth. In this practice, elemental mercury is used to extract gold from ore as an amalgam. The amalgam is typically isolated by hand and then heated—often with a torch or over a stove—to distill the mercury and isolate the gold. Mercury release from tailings and vaporized mercury exceed 1000 tonnes each year from ASGM. The health effects on the miners are dire, with inhaled mercury leading to neurological damage and other health issues. The communities near these mines are also affected due to mercury contamination of water and soil and subsequent accumulation in food staples, such as fish—a major source of dietary protein in many ASGM regions. The risks to children are also substantial, with mercury emissions from ASGM resulting in both physical and mental disabilities and compromised development. Between 10 and 19 million people use mercury to mine for gold in more than 70 countries, making mercury pollution from ASGM a global issue. With the Minamata Convention on Mercury entering force this year, there is political motivation to help overcome the problem of mercury in ASGM. In this effort, chemists can play a central role. Here, the problem of mercury in ASGM is reviewed with a discussion on how the chemistry community can contribute solutions. Introducing portable and low‐cost mercury sensors, inexpensive and scalable remediation technologies, novel methods to prevent mercury uptake in fish and food crops, and efficient and easy‐to‐use mercury‐free mining techniques are all ways in which the chemistry community can help. To meet these challenges, it is critical that new technologies or techniques are low‐cost and adaptable to the remote and under‐resourced areas in which ASGM is most common. The problem of mercury pollution in ASGM is inherently a chemistry problem. We therefore encourage the chemistry community to consider and address this issue that affects the health of millions of people.

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“…Los metales pesados ocasionan daños a los organismos expuestos, bien por su aguda toxicidad, o porque se acumulan en los tejidos de plantas y animales a través de exposiciones repetidas (Ortiz 1983). En los últimos años, en el departamento de Córdoba se ha documentado la presencia de metales pesados en sedimentos, aguas, plantas, peces y humanos (Gracia et al 2009, Feria et al 2010, Marrugo et al 2015, Marrugo et al 2016. Además, existen reportes de genotoxicidad por metales pesados en pequeños mamíferos (roedores) asociados a zonas de explotación carbonífera (Espitia et al 2007) e incluso se tienen reportes de contaminantes (Hg) en grandes mamíferos como jaguares (Racero et al 2012).…”

Section: Introductionunclassified

Metales pesados en especies de murciélagos (quiróptera) asociados a una finca bajo manejo silvopastoril en el departamento de Córdoba, Colombia

Racero-Casarrubia¹,

Pinedo‐Hernández²,

Ballesteros-Correa³

et al. 2017

AZM

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Metales pesados en especies de murciélagos (Quiróptera) asociados a una finca bajo manejo silvopastoril en el departamento de Córdoba, Colombia. Acta Zoológi-ca Mexicana (n.s.), 33(1), 45-54. RESUMEN.Metales pesados en especies de murciélagos (Quirópte-ra) asociados a una finca bajo manejo silvopastoril en el departamento de Córdoba, Colombia. En este trabajo se evaluó por primera vez para el departamento de Córdoba los niveles de oligoelementos (Zn, Cu, Pb y Hg) en músculo e hígado de ocho especies de murciélagos de las familias Phyllostomidae y Emballonuridae, presentes en una finca con manejo silvopastoril. Se determinó la concentración de metales pesados por espectrofotometría de absorción atómica con horno de grafito (Pb, Zn, Cd, Cu) y vapor frío (Hg). Se encontraron metales pesados en 24 murciélagos de ocho especies. El contenido de metales pesados en los diferentes tejidos siguió el orden Zn > Cu > Pb > Hg para la mayoría de las especies. La concentración de metales pesados en hígado y músculo presentaron diferencias estadísticas significativas. La contaminación por metales pesados en murciélagos asociados a un sistema silvopastoril posiblemente esté relacionada con el empleo de agroquímicos, pesticidas y compuestos fosfatados para el manejo de este agroecosistema. Palabras clave: Agroecosistema, bosque seco tropical, perturbación, quiroptera, trazas. ABSTRACT. In this paper evaluated for the first time in the department of Córdoba, levels of trace elements (Zn, Cu, Pb and Hg) in muscle and liver of eight bats species of the families Phyllostomidae and Emballonuridae, present in a farm with silvopastoral management. The concentration of heavy metals was determined by atomic absorption spectrophotometry with graphite furnace (Pb, Zn, Cd, Cu) and cold vapor (Hg). Heavy metals were found in 24 bats of eight species. The heavy metal content in different tissues followed the order Zn> Cu> Pb> Hg for most species. The concentration of heavy metals in liver and muscle showed statistically significant differences. Contamination by heavy metals in bats associated with a silvopastoral system may be related to the use of agrochemicals, pesticides and phosphate compounds for this agro-ecosystem management.. Racero

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Screening of native plant species for phytoremediation potential at a Hg-contaminated mining site

Cited by 115 publications

References 32 publications

Activation of Non‐Enzymatic Antioxidants by Lepidium sativum L. Exposed to Hg During Assisted Phytoextraction

Activation of Non‐Enzymatic Antioxidants by Lepidium sativum L. Exposed to Hg During Assisted Phytoextraction

The Mercury Problem in Artisanal and Small‐Scale Gold Mining

Metales pesados en especies de murciélagos (quiróptera) asociados a una finca bajo manejo silvopastoril en el departamento de Córdoba, Colombia

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