Simple screening technique for determination of adsorbed and absorbed mercury in particulate matter in atmospheric and aquatic environment

Bełdowska, Magdalena; Saniewska, Dominika; Gębka, Karolina; Kwasigroch, Urszula; Korejwo, Ewa; Kobos, Justyna

doi:10.1016/j.talanta.2018.01.082

Cited by 48 publications

(25 citation statements)

References 24 publications

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“…Hg analyses were performed on a direct mercury analyser DMA-80 (Milestone). Hg speciation was determined using the thermodesorption method described by Saniewska and Bełdowska ( 2017 ), modified by Bełdowska et al ( 2018 ) and Jędruch et al ( 2018a ). The samples were weighted (sample mass 0.1 g) on previously digested in 3–4 M HNO 3 and ignited (800 °C, 1 min) quartz glass sample boats.…”

Section: Methodsmentioning

confidence: 99%

“…The sediment samples were successively incinerated at the following temperatures: 175, 225, 325, 475 and 750 °C, in order to distinguish between labile (bioavailable) and stable forms of Hg and to identify their proportions in the total Hg (Hg TOT ). The first fraction consists of loosely bound Hg compounds, released at the lowest temperature of 175 °C (HgCl 2 , HgBr 2 , HgI 2 , Hg(CN) 2 ), mainly adsorbed on the surface of sediment particles (Hg ads1 ) (Bełdowska et al 2018 ). At a temperature of 225 °C, labile hummus-like substances are released, as well as MeHg (monomethyl mercury) (Saniewska and Bełdowska 2017 )—the most toxic for organisms and compounds absorbed in organic matter (Hg(SCN) 2 , (CH 3 COO) 2 Hg, Hg(NO 3 ) 2 ), Hg(ClO 4 ) (Hg abs )) (Molina et al 2010 ).…”

Section: Methodsmentioning

confidence: 99%

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Coastal erosion—a “new” land-based source of labile mercury to the marine environment

Kwasigroch

Bełdowska

Jędruch

et al. 2018

Environ Sci Pollut Res

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Mercury (Hg) can be introduced into the marine environment in many different ways. In the case of the Baltic Sea, rivers and atmospheric deposition are the predominant ones. However, in the face of ongoing climate change, a new potential source, coastal erosion, is starting to become more important and is currently considered to be the third largest source of Hg in the Gdansk Basin region. It is especially significant along sections of coastline where, due to the higher frequency of extreme natural phenomena such as storms, heavy rains, and floods, increased erosion processes have already been noted. Cliffs, which account for about 20% of the Polish coastline, are particularly vulnerable. The aim of the study was to estimate the annual load of labile Hg entering the Gdansk Basin as a result of coastal erosion. Samples of down-core sediments (0–65 cm) were collected in the years 2016–2017 from selected cliffs situated in the Gulf of Gdansk area. The thermodesorption method was used to distinguish between labile and stable fractions of Hg. Considering the mean total Hg concentrations in the collected sediments (9.7 ng g−1) and the mean share of labile (64%), bioavailable mercury, it was estimated that the load of labile Hg originating from coastal erosion entering the Gdansk Basin is 10.0 kg per year. The load can increase by up to 50% in the case of episodic abrasion events during heavy storms and rains.Electronic supplementary materialThe online version of this article (10.1007/s11356-018-2856-7) contains supplementary material, which is available to authorized users.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Coastal erosion—a “new” land-based source of labile mercury to the marine environment

Kwasigroch

Bełdowska

Jędruch

et al. 2018

Environ Sci Pollut Res

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“…HgS, one of the mercury species identified in this study (Fig. 2), is found associated with different types of particles, such as airborne particulate matter [1,12] and fly ash particles [40]. Given that in Asturias there are four coal-fired power plants currently operating at less than 100 km from the Vega beach ( Fig.…”

Section: Discussionmentioning

confidence: 80%

“…The authors declare that they have no competing interests. 1 INDUROT, Campus de Mieres, Universidad de Oviedo, 33600 Mieres, Spain. 2 Instituto Nacional del Carbón (CSIC), Francisco Pintado Fe, 26, 33011 Oviedo, Spain.…”

Section: Supplementary Informationmentioning

confidence: 99%

Assessment of mercury pollution sources in beach sand and coastal soil by speciation analysis

et al. 2019

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Background: An essential requisite for controlling and monitoring mercury in the environment is to identify its species in different types of soils and sediments, as this will help not only to establish its mobility in the environment and ecosystem and the degree of its toxicity, but also to establish the source of contamination. The objective of this work was to identify the origin of mercury in beach sands and soil taken from a coastal region with previously high mining and industrial activity by characterizing the mercury species using the technique known as thermal desorption (HgTPD). Results: Apart from quartz, the main mineral species identified in the raw sands and soil were calcite, fluorite and barite. The concentration of mercury ranges from 5 to 23 µg g −1 , and although it is distributed in different proportions in the function of the size, thermal desorption profiles demonstrated that the mercury species present in the samples do not vary with the mercury concentration and the particle size. By means of HgTPD, mercury oxide (HgO) was identified in the beach sands, whereas mercury sulfide (HgS) was found in the soil sample taken from the vicinity of the beach. Complementary methodologies foster the HgTPD conclusions and verify that mercury is present mostly in insoluble stable (HgS) or low-mobility (HgO) forms in the samples studied. Analyses by ICP-MS after sequential extraction and HPLC separation of mercury species show that inorganic mercury is the predominant form in the samples. Conclusions: The technique HgTPD is a very useful tool to ascertain the origin of mercury in contaminated beach sands and shoreline soils. In the particular area studied in this work, the species identified indicate that previous mining activity was the source of the mercury and rule out the possibility that contamination is derived from coal combustion activities ongoing in the region.

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“…Thermal desorption (TD) techniques are increasingly used to provide information on total Hg content, on Hg species in soil and sediment samples (Bollen et al 2008; 2012; Saniewska and Beldowska 2017) and more recently on Hg speciation in aquatic and atmospheric particulate samples (Bełdowska et al 2018). In TD speciation studies, Hg species adsorbed to solid particles are gradually removed by a stepwise increase in temperature, in a process analogous to sequential extraction where species are released by increasing harshness of extracting reagents.…”

Section: Introductionmentioning

confidence: 99%

Assessing Mercury Mobility in Sediment of the Union Canal, Scotland, UK by Sequential Extraction and Thermal Desorption

Cook

Davidson

Keenan

et al. 2019

Arch Environ Contam Toxicol

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The mobility of mercury (Hg) was assessed in sediment from the Union Canal, Scotland, UK. Samples collected from the vicinity of a former munitions factory that manufactured mercury fulminate detonators were subjected to sequential extraction followed by cold vapor atomic absorption spectrometry (CVAAS) and direct analysis using thermal desorption (TD). The sequential extraction indicated that >75% of mercury (up to 429 mg kg-1) was in mobile forms, with <12% semi-mobile and <23% non-mobile species. In the TD method, >67% of the total Hg content was desorbed in the temperature range 100-250 °C consistent with species weakly attached to the mineral matrix (tentatively identified as an iron (oxy)hydroxideassociated species). This predominance of mobile mercury species may arise from a lack of association between Hg and either organic matter or sulfur in the sediments. Further investigation of Hg mobilization, transport and assimilation/biomagnification is required both to determine whether there is a need for remediation of the sediment and to improve understanding of the biogeochemical cycling of Hg in shallow, oxic, freshwater systems.

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Simple screening technique for determination of adsorbed and absorbed mercury in particulate matter in atmospheric and aquatic environment

Cited by 48 publications

References 24 publications

Coastal erosion—a “new” land-based source of labile mercury to the marine environment

Coastal erosion—a “new” land-based source of labile mercury to the marine environment

Assessment of mercury pollution sources in beach sand and coastal soil by speciation analysis

Assessing Mercury Mobility in Sediment of the Union Canal, Scotland, UK by Sequential Extraction and Thermal Desorption

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