The present study focuses on the sources and spatial distribution of potentially toxic elements (PTEs) organic pollutants in water, canal bed sediment, soil Versiliana urban park, an inclusive green area near coast densely populated Versilia Plain Tuscany. Surface water sediments from canals crossing park were collected at 10 stations during four different surveys to account for hydrological seasonality. Groundwater was a survey through piezometers. Eleven shallow samples also collected,...

Ultramafic soils are characterized by severe edaphic conditions induced a low content of essential nutrients, an adverse Ca/Mg ratio, water-holding capacity, and high contents geogenic potentially toxic elements (PTEs), in particular Cr, Ni, Co. These metals commonly exceed the limits set environmental agencies governments, representing serious risks for ecosystems human health. In alpine environments, ultramafic modest thickness poor horizon differentiation. Several studies on have shown...

Abstract Purpose The extensive Hg contamination in soil and sediments occurring along the Paglia River (Central Italy) is result of interplay between geomorphological changes river anthropic activities, primarily associated to exploitation Hg-deposits "The Monte Amiata mining district" (MAMD). present study determines implications morphological that occurred last 200 years on distribution floodplain riverbed, which today represent one main Hg-reservoirs MAMD. Materials methods temporal...

Trees may represent useful long-term monitors of historical trends atmospheric pollution due to the trace elements stored along tree rings caused by modifications in environment during a tree’s life. Chestnut (Castanea sativa Mill.) trunk sections were used document yearly evolution Hg world-class mining district Monte Amiata (MAMD; Central Italy) and exploited until 1982. An additional source emissions area have been active geothermal power plants. A marked decrease (from >200 µg/kg...

Abstract Lawsonite eclogites are rare rocks and have been described from only a few localities in the world. Lawsonite-bearing assemblages highly unstable physico-chemical processes linked to exhumation may destroy them; aggregates interpreted as pseudomorphs after lawsonite could be often recognized. In this paper, we present detailed structural petrological study of an area northwestern sector metaophiolitic high-pressure Voltri Massif (Ligurian Western Alps, Italy). The is characterized...

Thermal waters near the city of Viterbo (Central Italy) are known to show high As contents (up 600 µg/l). Travertine is precipitated by these waters, forming extended plateau. In this study, we determine content, speciation and bioaccessibility in soil travertine samples collected a recreational area highly frequented local inhabitants tourists investigate risk exposure through accidental ingestion particles. (Pseudo)total studied soils range from 17 528 mg/kg, being higher developed on...

The Mediterranean Sea is characterized by a marked mercury (Hg) geochemical anomaly, arising in part from large Hg deposits. Mercury mass loads discharged the Monte Amiata mining district (Central Italy) to through Paglia-Tiber River system were estimated. Data two seasons showed that up 40 kg year-1 of are drained Tiber and finally Sea. varied different seasons, 3 mg day-1 upper section Paglia November 42 g before confluence with June. Along River, 15 ng L-1 total found at site after Rome...

Biomonitoring studies are often employed to track airborne pollutants both in outdoor and indoor environments. In this study, the mercury (Hg) sorption by three biomonitors, i.e., Pinus nigra bark, Pseudovernia furfuracea lichen, Hypnum cupressiforme moss, was investigated controlled (indoor) conditions. comparison environments, conditions offer opportunity investigate more detail variables (humidity, temperature, speciation, etc.) that control Hg uptake. The biomonitors were exposed two...

The mercury cell manufacturing process, which has been extensively used in chlor-alkali plants to produce chlorine and caustic soda by electrolysis, represents a major source of Hg environmental pollution. At Saline di Volterra (Tuscany, Italy), solution mining pumping water into halite deposits was applied brines for mercury-cell plant. Hg-contaminated, exhausted were pumped back at depth the rock salt field order renew available resources. Activities ceased 1994, following leakage...

Mining activities have a severe impact on fluvial systems. The dispersion of huge amounts heavily polluted wastes contribute to mining-related river pollution due runoff. Pollutants distribution in systems is controlled by the interplay between weather conditions (e.g., flooding events), geomorphic processes, and anthropic affecting sediments supply, erosion, transport, (re-) deposition. Mercury (Hg) listed as critical contaminant its high toxicity, mobility, persistence environment. Its use...

Abstract Uzbekistan (Central Asia) is experiencing serious water stress as a consequence of altered climate regime, past over-exploitation, and dependence from neighboring countries for supply. The Chirchik–Akhangaran drainage basin, in the Tashkent province Uzbekistan, includes watersheds Middle Tien Shan Mountains escarpments downstream floodplain Chirchik Akhangaran rivers, major tributaries Syrdarya river. Water basin facing potential anthropogenic pressure different sources at scale...

The aim of the work is to assess role local-scale lithological, textural, and structural factors in distribution potentially toxic elements (PTEs) different ultramafic rocks from high-pressure ophiolitic Voltri Massif (Central Liguria, NW Italy). results evidenced that Cr (up 4183 ppm), Ni 3900 Co 334 ppm) are invariably PTEs with highest concentrations; addition, V, Cu, Zn systematically found non-negligible amounts. Spinel-group minerals (chromium spinel, ferrian chromite, chromium...

<abstract> <p>The environmental impact of mining and smelting in the world-class Monte Amiata mercury (Hg) ore field has long been studied, before after final closure 1982. A first summary was presented 2015. With this contribution, we review studies conducted last eight years. The most significant results include ⅰ) Hg-isotope characterization primary (cinnabar), waste (calcines), soil, fish stream sediments; ⅱ) analysis interplay between geomorphological evolution, fluvial...

Abstract This study presents the first data on REY (Rare Earth Elements plus Yttrium) in aquifer of Mount Etna (Sicily, Italy). Patterns normalized to chondrites indicate strong water–rock interaction, facilitated by a slightly acidic pH resulting from dissolution magma-derived CO 2 . patterns provide insights into processes both mineral and formation secondary phases. The relative abundance light heavy rare earth elements is compatible with prevailing ferromagnesian minerals (e.g., olivine...

<title>Abstract</title> In Central Asia, Uzbekistan experiences water scarcity and stress, being highly dependent on external flow from the upstream water-rich neighboring countries. Chirchik Akhangaran are main rivers in Tashkent province, taking their sources Middle Tien Shan Mountains, flowing through floodplains, becoming major tributaries of Syrdarya river, providing to Aral Sea. this study, trace element chemistry were obtained surface- groundwater collected October 2023 with aim...

Wide areas of the Southern sector Ecuador are characterized by Cretaceous mafic volcanic rocks, pervasively altered a propylitic mineralogical assemblage with epidote, chlorite, and quartz minor titanite, illite prehnite. These propylitically rocks host significant gold mineralization in veins, deeply exploited last decades. Porphyry Au-Cu deposits also occur area. This work focuses on study this alteration to assess genetic conditions relation distance from porphyry system, through chemical...

Abstract. An innovative multi-analytical approach comprising mineralogical, minero-chemical, and microstructural analyses as well an indirect machine learning-based statistical method was applied to investigate the mineralogy mineral chemistry of spinel subgroup minerals (SSMs) different ultramafic rocks from high-pressure metaophiolites Voltri Massif (Central Liguria, NW Italy). The study focused on correlation between compositional variations SSMs their texture, microstructure, degree...

&amp;lt;p&amp;gt;Urbanization is a striking phenomenon, responsible for the development of cities as complex and highly dynamic systems. One most pressing issues in urban areas water cycle management, which directly influences availability quality this resource. Urban streams are vulnerable to impacts resulting from increasing urbanization they have often lost their pristine, natural character.&amp;lt;/p&amp;gt;&amp;lt;p&amp;gt;We hereby present preliminary results multidisciplinary StrEams...