Monitoring of heavy metals in topsoils, atmospheric particles and plant leaves to identify possible contamination sources

Oliva, Sabina Rossini; Fernández-Espinosa, Antonio José

doi:10.1016/j.microc.2007.01.003

Cited by 163 publications

(57 citation statements)

References 30 publications

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“…(Sb, Co) and heating systems, gas flaring at the gas oil production site, and non-ferrous metal-smelter industry (Sb, Zn, Vinogradova et al, 1993) and ground transportation (Pb, Cu, Zn, Cr, Ni, As; Rossini Oliva and Fernández Espinosa, 2007;Sutherland et al, 2000).…”

Section: Dissolved Major and Trace Elements In Siberian Snowmentioning

confidence: 99%

Impact of snow deposition on major and trace element concentrations and elementary fluxes in surface waters of the Western Siberian Lowland across a 1700 km latitudinal gradient

Шевченко

Pokrovsky

Vorobyev

et al. 2017

Hydrol. Earth Syst. Sci.

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Abstract. In order to better understand the chemical composition of snow and its impact on surface water hydrochemistry in the poorly studied Western Siberia Lowland (WSL), the surface layer of snow was sampled in February 2014 across a 1700 km latitudinal gradient (ca. 56.5 to 68 • N). We aimed at assessing the latitudinal effect on both dissolved and particulate forms of elements in snow and quantifying the impact of atmospheric input to element storage and export fluxes in inland waters of the WSL. The concentration of dissolved+colloidal (< 0.45 µm) Fe, Co, Cu, As and La increased by a factor of 2 to 5 north of 63 • N compared to southern regions. The pH and dissolved Ca, Mg, Sr, Mo and U in snow water increased with the rise in concentrations of particulate fraction (PF). Principal component analyses of major and trace element concentrations in both dissolved and particulate fractions revealed two factors not linked to the latitude. A hierarchical cluster analysis yielded several groups of elements that originated from alumino-silicate mineral matrix, carbonate minerals and marine aerosols or belonging to volatile atmospheric heavy metals, labile elements from weatherable minerals and nutrients. The main sources of mineral components in PF are desert and semi-desert regions of central Asia.The snow water concentrations of DIC, Cl, SO 4 , Mg, Ca, Cr, Co, Ni, Cu, Mo, Cd, Sb, Cs, W, Pb and U exceeded or were comparable with springtime concentrations in thermokarst lakes of the permafrost-affected WSL zone. The springtime river fluxes of DIC, Cl, SO 4 , Na, Mg, Ca, Rb, Cs, metals (Cr, Co, Ni, Cu, Zn, Cd, Pb), metalloids (As, Sb), Mo and U in the discontinuous to continuous permafrost zone (64-68 • N) can be explained solely by melting of accumulated snow. The impact of snow deposition on riverine fluxes of elements strongly increased northward, in discontinuous and continuous permafrost zones of frozen peat bogs. This was consistent with the decrease in the impact of rock lithology on river chemical composition in the permafrost zone of the WSL, relative to the permafrost-free regions. Therefore, the present study demonstrates significant and previously underestimated atmospheric input of many major and trace elements to their riverine fluxes during spring floods. A broader impact of this result is that current estimations of river water fluxes response to climate warming in high latitudes may be unwarranted without detailed analysis of winter precipitation.

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Section: Dissolved Major and Trace Elements In Siberian Snowmentioning

confidence: 99%

Impact of snow deposition on major and trace element concentrations and elementary fluxes in surface waters of the Western Siberian Lowland across a 1700 km latitudinal gradient

Шевченко

Pokrovsky

Vorobyev

et al. 2017

Hydrol. Earth Syst. Sci.

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“…The enrichment factor (Eq. 1) is the relative abundance, with respect to iron, of one element, [M], in a soil compared to its relative abundance [M/Fe] in the local control site (Oliva and Espinosa 2007):…”

Section: Data Processing and Statistical Analysismentioning

confidence: 99%

Heavy metal contamination of topsoil and parts of peach-tree growing at different distances from a smelting complex

Dimitrijević

Nujkić

Alagić

et al. 2015

Int. J. Environ. Sci. Technol.

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This paper reports on the content of six heavy metals (Cu, Zn, Pb, As, Cd and Ni) in topsoil and parts of peach-tree, sampled from eight locations in urban-industrial and rural areas located at various distances from the Bor copper smelter, Serbia. Topsoil samples were analyzed for physical and chemical properties, while the content of heavy metals in all samples was determined using an inductively coupled plasma optical emission spectrometer (iCAP 6000). The enrichment factor showed that the topsoil was enriched by heavy metals (except for nickel), at all locations. An extreme enrichment by copper was found at six locations (EF soil = 86-101). The enrichment factors of heavy metals in peach-tree parts were highest in roots and leaves. The most extreme enrichment by copper was found to occur in the roots (EF plant = 68.80) from the flotation tailing pond. Among the studied heavy metals, only the content of zinc was within normal limits for plants. Calculated biological concentration factors (BCF \ 1) indicated a limited soil-to-root transfer of heavy metals. Moreover, the leaf/branch ratio as well as numerous and very strong Pearson's correlations between elements in the peach-tree parts confirmed that leaves represent the best indicators of pollution originating from atmospheric deposition. Principal component analysis identified sources of heavy metals in soil and parts of peach-tree.

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“…23 Entrance of metals via the foliage parts of plants was noted to be one of the major pathways by which metals enter leaves in a polluted area. 24 In a separate study on lead uptake by lettuce leaves, it was discovered that particulate matter deposited on plant leaves may be retained by cuticular waxes and trichomes, while some of the metals contained in particulate matter can penetrate inside plant tissues. 26 Micro-Xray fluorescence, scanning electron microscopy coupled with energy dispersive X-ray microanalysis, and time-of-flight secondary ion mass spectrometry were used to investigate the localisation and the speciation of lead in the leaves of different plants around a copper smelter company and it was found out that lead-enriched particulate matter was present on the surface of plant leaves.…”

Section: Evidence Of Trace Metals In Plantsmentioning

confidence: 99%

“…26 Micro-Xray fluorescence, scanning electron microscopy coupled with energy dispersive X-ray microanalysis, and time-of-flight secondary ion mass spectrometry were used to investigate the localisation and the speciation of lead in the leaves of different plants around a copper smelter company and it was found out that lead-enriched particulate matter was present on the surface of plant leaves. 24 The study further reported on biogeochemical transformations on the leaf surfaces with the formation of lead secondary species (PbCO 3 and organic lead). …”

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confidence: 98%

Urban farming as a possible source of trace metals in human diets

Olowoyo¹,

Lion²

2016

S. Afr. J. Sci.

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HOW TO CITE:Olowoyo JO, Lion GN. Urban farming as a possible source of trace metals in human diets. S Afr J Sci. 2016;112(1/2), Art. #2014-0444, 6 pages. http://dx.doi.org/10. 17159/ sajs.2016/20140444 Rapid industrialisation and urbanisation have greatly increased the concentrations of trace metals as pollutants in the urban environment. These pollutants (trace metals) are more likely to have an adverse effect on peri-urban agriculture which is now becoming a permanent feature of the landscape of many urban cities in the world. This review reports on the concentrations of trace metals in crops, including leafy vegetables harvested from different urban areas, thus highlighting the presence of trace metals in leafy vegetables. Various pathways of uptake of trace metals by leafy vegetables, such as the foliar and roots, and possible health risks associated with urban faming are discussed and various morphological and physiological impacts of trace metals in leafy vegetables are described. Defensive mechanisms and positive aspects of trace metals in plants are also highlighted. IntroductionUrban farming can be defined as the act of cultivating food crops, mostly vegetables, wherever land is available around or in the immediate vicinity of a major city.1,2 Farming activities around urban areas have become a prominent feature of some urban city landscapes, especially in developing countries. 3 There are several reasons for farming activities around peri-urban areas and these include easy access to markets and transportation of goods. In some countries, poor urban households use urban farming to increase their household income by selling the yield or surplus to reduce part of daily expenses. 4 The other probable reason for the increase in urban farming is the shortage of land. This involves farming areas previously used for either household or industrial waste, 5 supported by the notion that the soil will be very fertile. Urban farming also supports the campaign for organic farming. Consumers, in most cases, evaluate quality of leafy vegetables on their dark green colour and on size of the leaves as opposed to where farming activities have taken place. 6 However, in urban city centres where farming activities are carried out around industrial areas, safety around the consumption of these vegetables cannot be guaranteed because various disposal practices often cause the accumulation of potentially toxic trace elements in the soil. 7,8 Anthropogenic activities such as mining, emissions from vehicles, wrong agricultural practices and improper waste disposal are major sources of trace metal pollution in the urban environment. 5,9 It was recently discovered that a large percentage of toxic trace metals find their way into the human diet through consumption of vegetables and agricultural products. 5-14In acceptable limits, trace metals play an important role in the health and physiological activities of plants, animals and humans.15 They are required in minute quantities as natural components of the environment. For exa...

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Monitoring of heavy metals in topsoils, atmospheric particles and plant leaves to identify possible contamination sources

Cited by 163 publications

References 30 publications

Impact of snow deposition on major and trace element concentrations and elementary fluxes in surface waters of the Western Siberian Lowland across a 1700 km latitudinal gradient

Impact of snow deposition on major and trace element concentrations and elementary fluxes in surface waters of the Western Siberian Lowland across a 1700 km latitudinal gradient

Heavy metal contamination of topsoil and parts of peach-tree growing at different distances from a smelting complex

Urban farming as a possible source of trace metals in human diets

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Monitoring of heavy metals in topsoils, atmospheric particles and plant leaves to identify possible contamination sources

Cited by 163 publications

References 30 publications

Impact of snow deposition on major and trace element concentrations and elementary fluxes in surface waters of the Western Siberian Lowland across a 1700 km latitudinal gradient

Impact of snow deposition on major and trace element concentrations and elementary fluxes in surface waters of the Western Siberian Lowland across a 1700 km latitudinal gradient

Heavy metal contamination of topsoil and parts of peach-tree growing at different distances from a smelting complex

Urban farming as a possible source of trace metals in human diets

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Impact of snow deposition on major and trace element concentrations and elementary fluxes in surface waters of the Western Siberian Lowland across a 1700 km latitudinal gradient

Impact of snow deposition on major and trace element concentrations and elementary fluxes in surface waters of the Western Siberian Lowland across a 1700 km latitudinal gradient