Zeeman atomic absorption spectrometry using high frequency modulated light polarization

Sholupov, S. E.; Ganeyev, A.A.

doi:10.1016/0584-8547(95)01316-7

Cited by 80 publications

(45 citation statements)

References 16 publications

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“…Application of Zeeman background correction and a multipath analytical cell provided high selectivity and sensitivity. The accuracy of the method is 20% [52]. The detection limit is governed by shot noise and equals CaDL = 2 ng m −3 (average measuring time = 5 seconds) and CaDL = 0.3 ng m −3 (average measuring time = 30 seconds) at a flow rate of 20 L min −1 for GEM determination in ambient air, industrial and natural gases.…”

Section: Methodsmentioning

confidence: 98%

Gaseous Elemental Mercury and Total and Leached Mercury in Building Materials from the Former Hg-Mining Area of Abbadia San Salvatore (Central Italy)

Vaselli¹,

Nisi²,

Rappuoli³

et al. 2017

Preprint

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Mercury has a strong environmental impact since both its organic and inorganic forms are toxic and it represents a pollutant of global concern. Liquid Hg is highly volatile and it can be released during natural and anthropogenic processes in the hydrosphere, biosphere and atmosphere. In this study the distribution of Gaseous Elemental Mercury (GEM) and the total and leached mercury concentrations on paints, plasters, roof tiles, concretes, metals, dust and wood structures were determined in the main buildings and structures of the former Hg-mining area of Abbadia San Salvatore (Siena, Central Italy). The mining complex (divided into 7 units) covers a surface of about 65 ha and contains mining structures and managers and workers buildings. In this work, nine surveys of GEM measurements were carried out from July 2011 to August 2015 for the buildings and structures located in the units 2, 3 and 6. Moreover, detailed measurements were performed in February, April, July, September and December 2016 in the edifices and mining structures of Unit 6. GEM concentrations showed a strong variability in terms of space and time mostly depending on the distance from the building hosting driers, furnaces and condensers and ambient temperature, respectively. In the Unit 2 surveys carried out in the hotter period (from June to September) showed GEM concentrations up to 27,500 ng m −3 , while in the Unit 6 they were on average much higher and occasionally they saturated the GEM measurement device (>50,000 ng m −3 ). Concentrations of total (in mg kg −1 ) and leached (in μg L −1 ) mercury measured in different building materials (up to 46,580 mg kg −1 and 4,470 mg L −1 for total and leached mercury, respectively) showed for the same type of material highly variable values in dependence on the edifice or mining structure from which they were collected. The results obtained in this study are of relevant interest for the operational cleanings to be carried out during the reclamation activities.

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Section: Methodsmentioning

confidence: 98%

Gaseous Elemental Mercury and Total and Leached Mercury in Building Materials from the Former Hg-Mining Area of Abbadia San Salvatore (Central Italy)

Vaselli¹,

Nisi²,

Rappuoli³

et al. 2017

Preprint

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“…The total Hg content of the air-dried plant samples and soils was analyzed with a Lumex RA-915+ analyzer (Lumex, Arlington, Va.), a highly versatile instrument that is based on Zeeman atomic absorption spectrometry, with high-frequency modulation of light polarization (ZAAS-HFM) (Sholupov & Ganeyev, 1995). The application of Zeeman background correction and a multipath analytical cell provide a high selectivity and sensitivity to the measurements.…”

Section: Methodsmentioning

confidence: 99%

Mercury accumulation in soils and plants in the Almadén mining district, Spain: one of the most contaminated sites on Earth

Molina

Oyarzún

Esbrí

et al. 2006

Environ Geochem Health

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Although mercury (Hg) mining in the Almadén district ceased in May 2002, the consequences of 2000 years of mining in the district has resulted in the dissemination of Hg into the surrounding environment where it poses an evident risk to biota and human health. This risk needs to be properly evaluated. The uptake of Hg has been found to be plant-specific. To establish the different manners in which plants absorb Hg, we carried out a survey of Hg levels in the soils and plants in the most representative habitats of this Mediterranean area and found that the Hg concentrations varied greatly and were dependent on the sample being tested (0.13-2,695 microg g(-1) Hg). For example, the root samples had concentrations ranging from 0.06 (Oenanthe crocata, Rumex induratus) to 1095 (Polypogon monspeliensis) microg g(-1) Hg, while in the leaf samples, the range was from 0.16 (Cyperus longus) to 1278 (Polypogon monspeliensis) microg g(-1) Hg. There are four well-differentiated patterns of Hg uptake: (1) the rate of uptake is constant, independent of Hg concentration in the soil (e.g., Pistacia lentiscus, Quercus rotundifolia); (2) after an initial linear relationship between uptake and soil concentration, no further increase in Hg(plant) is observed (e.g., Asparagus acutifolius, Cistus ladanifer); (3) no increase in uptake is recorded until a threshold is surpassed, and thereafter a linear relationship between Hg(plant) and Hg(soil) is established (e.g., Rumex bucephalophorus, Cistus crispus); (4) there is no relationship between Hg(plant) and Hg(soil )(e.g., Oenanthe crocata and Cistus monspeliensis). Overall, the Hg concentrations found in plants from the Almadén district clearly reflect the importance of contamination processes throughout the study region.

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“…This is a highly versatile instrument, based on Zeeman atomic absorption spectrometry, with high frequency modulation of light polarization (ZAAS-HFM) (Sholupov and Ganeyev, 1995). Application of the Zeeman background correction and a multipath analytical cell provide high selectivity and sensitivity of measurements.…”

Section: Analytical Techniques and Instrumentation For Hgmentioning

confidence: 99%

Sampling high to extremely high Hg concentrations at the Cerco de Almadenejos, Almadén mining district (Spain): The old metallurgical precinct (1794 to 1861AD) and surrounding areas

Martínez-Coronado

Oyarzún

Esbrí

et al. 2011

Journal of Geochemical Exploration

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The Cerco de Almadenejos (CDA) is an old metallurgical site located in the province of Ciudad Real (Spain) that operated between 1794 and 1861. The metallurgical precinct was built for the roasting of the Almadén and Almadenejos cinnabar ore to extract Hg metal. A previous pilot geochemical study of soils at the CDA had already shown extremely high concentrations of Hg. To analyze the extent and intensity of contamination, we planned and executed a geochemical survey to cover the CDA and the surrounding areas. The survey covered soils, air, and plants. The planning involved the design of two sampling grids in order to obtain a comprehensive picture of potential environmental hazards in the area: 1) a detailed sampling grid centred on the metallurgical precinct (n = 16 samples; area = 3.6 × 10 4 m 2 ); and 2) a less detailed sampling grid planned to determine the extension of contamination beyond the metallurgical site (n = 35 samples; area = 1.2 × 10 6 m 2 ). After variogram modelization of geochemical data, the kriging plots showed that contamination, even if centred at the precinct, extends beyond the site, with Hg concentrations of up to 2200 times those of uncontaminated soils (world baseline). The detailed study of the soils from the precinct shows an extremely high mean concentration of 4220 μg Hg g − 1 (4.2 × 10 5 times baseline concentration). In turn, these highly polluted soils induce strong emissions of Hg (g) , with concentrations of up to 970 ng Hg m − 3 . The study of the edible wild asparagus Asparagus acutifolius shows extremely high concentrations of mercury in roots (0.6-443 μg g − 1 ) and stems (0.3-140 μg g − 1 ). The data indicate that the study area constitute a hot spot of contamination and is a potential health/environmental hazard for the inhabitants of Almadenejos, livestock, and wild life, that requires immediate action via remediation procedures.

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Zeeman atomic absorption spectrometry using high frequency modulated light polarization

Cited by 80 publications

References 16 publications

Gaseous Elemental Mercury and Total and Leached Mercury in Building Materials from the Former Hg-Mining Area of Abbadia San Salvatore (Central Italy)

Gaseous Elemental Mercury and Total and Leached Mercury in Building Materials from the Former Hg-Mining Area of Abbadia San Salvatore (Central Italy)

Mercury accumulation in soils and plants in the Almadén mining district, Spain: one of the most contaminated sites on Earth

Sampling high to extremely high Hg concentrations at the Cerco de Almadenejos, Almadén mining district (Spain): The old metallurgical precinct (1794 to 1861AD) and surrounding areas

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