scholarly journals Trace elements mobility in soils from the hydrothermal area of Nisyros (Greece)

2015 ◽  
Vol 57 ◽  
Author(s):  
Kyriaki Daskalopoulou ◽  
Sergio Calabrese ◽  
Silvia Milazzo ◽  
Lorenzo Brusca ◽  
Sergio Bellomo ◽  
...  
Keyword(s):  
Trace Elements ◽  
Microwave Digestion ◽  
Hydrothermal Activity ◽  
Major And Trace Elements ◽  
Soil Samples ◽  
Fumarolic Activity ◽  
Strong Impact ◽  
Fumarolic Gases ◽  
Local Background ◽  
Background Soil

Nisyros Island, Greece, is a stratovolcano known for its intense hydrothermal activity. On June 2013, during a multidisciplinary field campaign, soil samples were collected in the caldera area to determinate the main mineralogical paragenesis and to investigate the distribution of trace elements concentrations and the possible relationship to the contribution of deep originated fluids. Soil samples were analysed with XRD and for the chemical composition of their leachable (deionized water) and near total (microwave digestion) fraction both for major and trace elements. All data were compared to a local background soil. The results allow to divide the samples in 2 groups: Lakki Plain and Stefanos Crater. The latter, where a fumarolic area is located, shows a mineralogical paragenesis dominated by phases typical of hydrothermal alteration. Their very low pH values (1.9 – 3.4) evidence the strong impact of fumarolic gases which are probably also the cause of strong enrichments in these soils of highly volatile elements like S, As, Se, Bi, Sb, Tl and Te. The soils of the Lakki Plain, being less exposed to the fumarolic activity, show minearalogical and chemical characteristics intermediate between the background soil and those of Stefanos Crater.

scholarly journals Annex 1 to: Trace elements mobility in soils from the hydrothermal area of Nisyros (Greece)

2015 ◽  
Vol 57 ◽  
Author(s):  
Kyriaki Daskalopoulou ◽  
Sergio Calabrese ◽  
Silvia Milazzo ◽  
Lorenzo Brusca ◽  
Sergio Bellomo ◽  
...  
Keyword(s):  
Trace Elements ◽  
Chemical Composition ◽  
Trace Element ◽  
Microwave Digestion ◽  
Hydrothermal Activity ◽  
Soil Samples ◽  
Deionized Water ◽  
Title Page ◽  
Field Campaign ◽  
Element Concentrations

<div class="page" title="Page 1"><div class="layoutArea"><div class="column"><p><span>Nisyros Island, Greece, is a stratovolcano known for its intense hydrothermal activity. On June 2013, during a multidisciplinary field campaign, soil samples were collected in the caldera area to determinate the main mineralogical assemblages and to investigate the distribution of trace element concentrations and the possible relationship to the contribution of fluids of deep origin. Soil samples were analysed with XRD and for the chemical composition of their leachable (deionized water) and pseudo total (microwave digestion)  [...]</span></p></div></div></div>

Application of microwave digestion and ICP-MS to simultaneous analysis of major and trace elements in aerosol samples collected on quartz filters

2013 ◽  
Vol 5 (2) ◽  
pp. 554-559 ◽  
Author(s):  
J. Aldabe ◽  
C. Santamaría ◽  
D. Elustondo ◽  
E. Lasheras ◽  
J. M. Santamaría
Keyword(s):  
Trace Elements ◽  
Microwave Digestion ◽  
Major And Trace Elements ◽  
Simultaneous Analysis ◽  
Icp Ms

scholarly journals Passive degassing at Nyiragongo (D.R. Congo) and Etna (Italy) volcanoes

2015 ◽  
Vol 57 ◽  
Author(s):  
Sergio Calabrese ◽  
Sarah Scaglione ◽  
Silvia Milazzo ◽  
Walter D'Alessandro ◽  
Nicole Bobrowski ◽  
...  
Keyword(s):  
Trace Elements ◽  
Trace Element ◽  
Major And Trace Elements ◽  
Trace Element Composition ◽  
Bulk Deposition ◽  
Volcanic Plume ◽  
Strong Impact ◽  
Volcanic Emissions ◽  
Endemic Plant ◽  
The Impact

<p>Volcanoes are well known as an impressive large natural source of trace elements into the troposphere. Etna (Italy) and Nyiragongo (D.R. Congo) are two stratovolcanoes located in different geological settings, both characterized by persistent passive degassing from their summit craters. Here, we present some results on trace element composition in volcanic plume emissions, atmospheric bulk deposition (rainwater) and their uptake by the surrounding vegetation, with the aim to compare and identify differences and similarities between these two volcanoes. Volcanic emissions were sampled by using active filter-pack for acid gases (sulfur and halogens) and specific teflon filters for particulates (major and trace elements). The impact of the volcanogenic deposition in the surrounding of the crater rims was investigated by using different sampling techniques: bulk rain collectors gauges were used to collect atmospheric bulk deposition, and biomonitoring technique was carried out to collect gases and particulates by using endemic plant species. The estimates of the trace element fluxes confirm that Etna and Nyiragongo are large sources of metals into the atmosphere, especially considering their persistent state of passive degassing. The large amount of emitted trace elements has a strong impact on the close surrounding of both volcanoes. This is clearly reflected by in the chemical composition of rainwater collected at the summit areas both for Etna and Nyiragongo. Moreover, the biomonitoring results highlight that bioaccumulation of trace elements is extremely high in the proximity of the crater rim and decreases with the distance from the active craters.</p>

scholarly journals Investigation of different extraction procedures for the determination of major and trace elements in coal by ICP-AES and ion chromatography

2016 ◽  
Vol 81 (4) ◽  
pp. 403-417 ◽  
Author(s):  
Aleksandra Tasic ◽  
Ivana Sredovic-Ignjatovic ◽  
Ljubisa Ignjatovic ◽  
Ivan Andjelkovic ◽  
Malisa Antic ◽  
...  
Keyword(s):  
Trace Elements ◽  
Sequential Extraction ◽  
Ion Chromatography ◽  
Microwave Digestion ◽  
Major And Trace Elements ◽  
Emission Spectrometry ◽  
Microwave Assisted Extraction ◽  
Microwave Assisted ◽  
Assisted Extraction

This paper presents the extraction of major and trace elements from a coal sample, in deionized water, by using three different extraction techniques. Rotary mixing and ultrasonic extraction were examined for different extraction times, while the microwave assisted extraction was performed at different temperatures. Metal concentrations (Na, K, Ca, Mg, Al, Fe, Mn, Be, Cd, Co, Cr, Hg, As, Ni, Se, Sb and Pb) in a solution were determined by employing the inductively coupled plasma atomic emission spectrometry; whereas the results obtained for Na, K, Ca and Mg were compared employing ion chromatography. Comparing the rotary and ultrasonic-assisted extraction it is shown that the former is more efficient for the determination of Fe, Na and Pb, whereas the latter one has proven more efficient for the determination of Co and Cr ions. Microwave-assisted extraction has proven the most efficient method for any elements tested in coal. In addition, sequential extraction of elements was done using microwave digestion. The results of sequential extraction experiments indicated associations of investigated elements with a mineral phase and organic matrix. Sequential extraction provided information on possible leaching of As, Cd, Co, Cr, Ni, Pb, Fe and Mn in environmental conditions.

Major and Trace Elements in the Humic Acid

2018 ◽  
Author(s):  
Zoltán Kis ◽  
Katalin Gméling ◽  
Tímea Kocsis ◽  
János Osán ◽  
Mihály András Pocsai ◽  
...  
Keyword(s):  
Trace Elements ◽  
Humic Acid ◽  
Activation Analysis ◽  
Analytical Techniques ◽  
Major And Trace Elements ◽  
Prompt Gamma Activation Analysis ◽  
Prompt Gamma ◽  
Gamma Activation ◽  
X Ray ◽  
Precise Analysis

We present precise analysis of major and trace elements of the humic acid. We used three different element analytical techniques in our investigations as prompt-gamma activation analysis (PGAA), neutron activation analysis (NAA) and X-ray fluorescence (XRF) analysis was carried out. We identified 42 elements in our sample.

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