Characterization of soils from an industrial complex contaminated with elemental mercury

Miller, Christine; Watson, David B.; Lester, B.; Lowe, Kenneth A.; Pierce, Eric M.; Liang, Liyuan

doi:10.1016/j.envres.2013.03.013

Cited by 60 publications

(63 citation statements)

References 55 publications

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“…Several analytical methods for the determination of Hg in environmental samples have been described in the literature, including atomic emission spectrometry (AES) and coupled techniques, such as inductively-coupled plasma-AES (ICP-AES) [73][74][75] or microwaveinduced plasma-AES (MIP-AES) [76,77], X-ray fluorescence (XRF) [78][79][80], particle induced X-ray emission (PIXE) [81], inductively-coupled plasma-mass spectrometry (ICP-MS) [82][83][84][85], and high-performance liquid chromatography (HPLC) [86,87]. Radiochemical methods, such as neutron activation analysis [88,89], although rapid and sensitive for trace concentrations, are less commonly applied, as are electrochemical methods (e.g., polarography, amperometry, and voltammetry) [90,91].…”

Section: Mercury-quantification Methodologiesmentioning

confidence: 99%

An international proficiency test as a tool to evaluate mercury determination in environmental matrices

Reis

Duarte

Henriques

et al. 2015

TrAC Trends in Analytical Chemistry

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Section: Mercury-quantification Methodologiesmentioning

confidence: 99%

An international proficiency test as a tool to evaluate mercury determination in environmental matrices

Reis

Duarte

Henriques

et al. 2015

TrAC Trends in Analytical Chemistry

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“…In addition to Bloom's method (Miller et al 2013), there are other procedures used to determine the fractions of Hg in soil and how these fractions changed as a result of a remediative process. For example, many studies separate soil-bound Hg into six fractions: water soluble (extraction with deionized water), exchangeable (extraction with 1 M CH 3 COONH 4 ), elemental mercury (by heating in an oven for 48 h at 373 K), fulvic and humic acids (extraction with 1 M KOH and acidification to pH 2), organic and sulfide (extraction with 0.1 M HNO 3 and H 2 O 2 ), and the residual (extraction with aqua regia) (Biester and Scholz 1997;Di Giulio and Ryan 1987;Kucharski et al 2005).…”

Section: Chemistry Of Mercury and Implications For Soil-sediment Remementioning

confidence: 99%

In situ remediation technologies for mercury-contaminated soil

Gao

Pierce

et al. 2015

Environ Sci Pollut Res

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116

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Mercury from anthropogenic activities is a pollutant that poses significant risks to humans and the environment. In soils, mercury remediation can be technically challenging and costly, depending on the subsurface mercury distribution, the types of mercury species, and the regulatory requirements. This paper introduces the chemistry of mercury and its implications for in situ mercury remediation, which is followed by a detailed discussion of several in situ Hg remediation technologies in terms of applicability, cost, advantages, and disadvantages. The effect of Hg speciation on remediation performance, as well as Hg transformation during different remediation processes, was detailed. Thermal desorption, electrokinetic, and soil flushing/washing treatments are removal technologies that mobilize and capture insoluble Hg species, while containment, solidification/stabilization, and vitrification immobilize Hg by converting it to less soluble forms. Two emerging technologies, phytoremediation and nanotechnology, are also discussed in this review.

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“…El contenido de Hg a nivel mundial en suelos es de alrededor de 0.06 µg/g (Berrow y Reaves 1984). En suelos contaminados con Hg, su contenido depende en gran medida de las fuentes contaminantes como la minería de cinabrio, la metalúrgica (Llanos et al 2011), la extracción de oro (Kpan et al 2014) y la industria química (Miller et al 2013), entre otras. Varios estudios a nivel mundial han reportado concentraciones de Hg en suelos, principalmente proveniente de minería aurífera, entre otros en Kenia (Odumo et al 2014), China (Chen et al 2016) y Venezuela (Santos-Francés et al 2011).…”

Section: Introductionunclassified

Impacto De La Minería Del Oro Asociado Con La Contaminación Por Mercurio en Suelo Superficial De San Martín De Loba, Sur De Bolívar (Colombia)

Rocha-Román

Olívero-Verbel

Caballero-Gallardo

2018

Rev. Int. Contam. Ambie.

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Palabras clave: toxicidad, ambiente, actividades antrópicas, salud humana RESUMEN Las actividades humanas han aumentado la contaminación por mercurio (Hg) en los ambientes terrestres, especialmente en áreas de minería de oro. El objetivo de este estudio fue evaluar las concentraciones de mercurio total (Hg-t) en muestras de suelo superficial de San Martin de Loba, sur de Bolívar (Colombia), así como determinar el nivel de contaminación en el suelo. Un total de 202 muestras de suelo superficial fueron colectadas en San Martín de Loba. Los niveles de Hg-t fueron medidos por atomización electrotérmica y espectroscopia de absorción atómica. Las concentraciones de Hg-t variaron de 0.002 a 23.83 μg/g, con un valor medio de 3.40 ± 0.36 μg/g, el cual es ligeramente más alto que para el Hg en suelo a nivel mundial. El índice de geo-acumulación (Igeo) para suelo alcanzó valores superiores a 5, indicando una contaminación extrema (Clase 6) en el 17 % de las muestras, mientras que el 70 % fueron Clase 5 (fuertemente a extremadamente contaminado). Este estudio también ofrece un mapa de riesgos para evaluar las posibles repercusiones negativas. En conclusión, el municipio de San Martín de Loba puede considerarse una zona fuertemente contaminada con alto contenido de Hg. La tecnología utilizada para extraer oro a lo largo de los procesos de amalgamación provoca un alto grado de contaminación por Hg en torno a esta área de minería de oro. Por lo tanto, deben considerarse métodos alternativos de extracción para reducir los niveles de Hg que pueden liberarse al ambiente y afectar la salud humana.Key words: toxicity, environment, anthropogenic activities, human health ABSTRACT Human activities have increased mercury (Hg) contamination of terrestrial environments, especially gold mining areas. The aim of this study was to evaluate total Hg concentrations (T-Hg) in surface soil samples of San Martín de Loba, south of Bolívar (Colombia), to determine their Hg contamination level. For that purpose, 202 surface soil samples were collected. T-Hg levels were measured by electrothermal atomization and atomic absorption spectroscopy. The T-Hg surface soil concentrations ranged between 0.002 and 23.83 μg/g, with a median value of 3.40 ± 0.36 μg/g, which is

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Characterization of soils from an industrial complex contaminated with elemental mercury

Cited by 60 publications

References 55 publications

An international proficiency test as a tool to evaluate mercury determination in environmental matrices

An international proficiency test as a tool to evaluate mercury determination in environmental matrices

In situ remediation technologies for mercury-contaminated soil

Impacto De La Minería Del Oro Asociado Con La Contaminación Por Mercurio en Suelo Superficial De San Martín De Loba, Sur De Bolívar (Colombia)

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