ASSESSMENT OF SELECTED METALS ENRICHMENT IN SEDIMENTS FROM PALEA KAVALA RIVER, NE MACEDONIA, NORTHERN GREECE

In surface aquatic systems, trace elements and especially heavy metals accumulate in sediments. Thus, the determination of sediment chemical characteristics is critical in the assessment of an aquatic environment’s quality. Thirteen sediment samples from Palea Kavala river (NE Macedonia, Greece) were studied for their content in Al, Fe, Cu, Cd, Mn, Pb, Zn. In order to evaluate the metal enrichment for environmental purposes, two geochemical indices were employed: Enrichment Factor (EF) and Geoaccumulation Index (Igeo). According to the results, Al was the most abundant major element in sediments with Fe and Mn to follow. Trace element content followed the order Pb>Zn>Cu>Cd. EF values revealed that samples are enriched in Cd and Pb, while Igeo values also suggested that there is considerable contamination concerning Cd and Pb. It is concluded that ore mineralizations which occur in Palea Kavala region contribute to the elevated concentrations of all the studied elements, since they comprise mainly Fe-Mn metal assemblages including minerals such as pyrite, goethite, chalcopyrite, galena, sphalerite and pyrolousite.

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Ferronickel. Determination of trace-element content by electrothermal atomic absorption spectrometric method

10.3403/00333181u ◽

2015 ◽

Keyword(s):

Trace Element ◽

Atomic Absorption ◽

Trace Element Content ◽

Element Content ◽

Spectrometric Method ◽

Atomic Absorption Spectrometric

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Ferronickel. Determination of trace-element content by electrothermal atomic absorption spectrometric method

10.3403/00333178 ◽

1994 ◽

Keyword(s):

Trace Element ◽

Atomic Absorption ◽

Trace Element Content ◽

Element Content ◽

Spectrometric Method ◽

Atomic Absorption Spectrometric

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Ferronickel. Determination of trace-element content by electrothermal atomic absorption spectrometric method

10.3403/00333218 ◽

1994 ◽

Keyword(s):

Trace Element ◽

Atomic Absorption ◽

Trace Element Content ◽

Element Content ◽

Spectrometric Method ◽

Atomic Absorption Spectrometric

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Rapid determination of total metals: synergic effect of ultrasound energy and ionic liquids on the digestion of sediment samples

Journal of Soils and Sediments ◽

10.1007/s11368-021-03042-6 ◽

2021 ◽

Author(s):

Silvana M. Álvarez ◽

Natalia E. Llamas ◽

Mónica B. Álvarez ◽

Jorge E. Marcovecchio ◽

Mariano Garrido ◽

...

Keyword(s):

Ionic Liquids ◽

Rapid Determination ◽

Synergic Effect ◽

Sediment Samples ◽

Ultrasound Energy

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QuEChERS with ultrasound-assisted extraction combined with high-performance liquid chromatography for the determination of 16 polycyclic aromatic hydrocarbons in sediment

Journal of AOAC International ◽

10.1093/jaoacint/qsab023 ◽

2021 ◽

Author(s):

Ling Wu ◽

Qiurong He ◽

Jing Zhang ◽

Yongxin Li ◽

Weiqing Yang ◽

...

Keyword(s):

High Performance Liquid Chromatography ◽

Liquid Chromatography ◽

Aromatic Hydrocarbons ◽

High Performance ◽

Ultrasound Assisted Extraction ◽

Sediment Samples ◽

Assisted Extraction ◽

Polycyclic Aromatic ◽

Ultrasound Assisted

Abstract Background Polycyclic aromatic hydrocarbons (PAHs) have attracted worldwide attention due to their carcinogenic, teratogenic and mutagenic effects, environmental persistence and bioaccumulation characteristics. Therefore, the sensitive, reliable and rapid detection of PAHs in sediment is of great importance. Objective To develop a high-performance liquid chromatography (HPLC) with fluorescence and ultraviolet detection after QuEChERS treatment for simultaneous determination of 16 U.S. Environmental Protection Agency priority PAHs in sediment samples. Methods The samples were ultrasonically extracted with acetone and then the supernatant was purified with a modified QuEChERS method. After centrifugation, the supernatant was injected into the HPLC system for analysis. The separation was accomplished on a ZORBAX Eclipse PAH column (150 × 4.6 mm, 3.5 μm) and the column temperature was set at 30 °C. The flow rate of the mobile phase consisting of water and acetonitrile in gradient elution mode was fixed at 0.9 mL/min. Detection was conducted on an ultraviolet detector and a fluorescence detector simultaneously. The qualitative analysis was based on retention time and the quantification was based on standard curves. Results Under the optimal conditions, this method showed good linearities in the range of 10–200 μg/L with correlation coefficients greater than 0.9993. The method had the limits of detection (LODs) ranging from 0.00108 to 0.314 ng/g. The mean recoveries ranged from 78.4 to 117% with the intra-day and inter-day relative standard deviations (RSDs) of 0.592–10.7 and 1.01–13.0%, respectively. The proposed method was successfully applied to the detection of 16 PAHs in sediment samples collected from the Funan River in Chengdu, China with the total contents of 431 to 2143 ng/g·dw. Conclusions The established method is simple, rapid, environment-friendly and cost- effective. It can be applied to the analysis of 16 PAHs in sediment samples. Highlights A method of QuEChERS with ultrasound-assisted extraction combined with HPLC has been established for the analysis of 16 PAHs in sediment samples and the proposed method has been successfully applied to the analysis PAHs in real sediment samples.

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Mineralogy and Geochemistry of Ultramafic Rocks from Rachoni Magnesite Mine, Gerakini (Chalkidiki, Northern Greece)

Minerals ◽

10.3390/min10110934 ◽

2020 ◽

Vol 10 (11) ◽

pp. 934

Author(s):

Evangelos Tzamos ◽

Micol Bussolesi ◽

Giovanni Grieco ◽

Pietro Marescotti ◽

Laura Crispini ◽

...

Keyword(s):

Raw Materials ◽

Mining Area ◽

Ultramafic Rocks ◽

Northern Greece ◽

Icp Ms ◽

Time In Literature ◽

History Of ◽

First Time ◽

The Eu

The importance of magnesite for the EU economy and industry is very high, making the understanding of their genesis for the exploration for new deposits a priority for the raw materials scientific community. In this direction, the study of the magnesite-hosting ultramafic rocks can be proved very useful. For the present study, ultramafic rock samples were collected from the magnesite ore-hosting ophiolite of the Gerakini mining area (Chalkidiki, Greece) to investigate the consecutive alteration events of the rocks which led to the metallogenesis of the significant magnesite ores of the area. All samples were subjected to a series of analytical methods for the determination of their mineralogical and geochemical characteristics: optical microscopy, XRD, SEM, EMPA, ICP–MS/OES and CIPW normalization. The results of these analyses revealed that the ultramafic rocks of the area have not only all been subjected to serpentinization, but these rocks have also undergone carbonation, silification and clay alteration. The latter events are attributed to the circulation of CO2-rich fluids responsible for the formation of the magnesite ores and locally, the further alteration of the serpentinites into listvenites. The current mineralogy of these rocks was found to be linked to one or more alteration event that took place, thus a significant contribution to the metallo- and petrogenetic history of the Gerakini ophiolite has been made. Furthermore, for the first time in literature, Fe inclusions in olivines from Greece were reported.

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