Mercury Content and Pools in Complex Polycyclic Soils From a Mountainous Area in Galicia (NW Iberian Peninsula) DOI Creative Commons
Antía Gómez-Armesto, Melissa Méndez-López, Andrea Parente-Sendín

и другие.

Spanish Journal of Soil Science, Год журнала: 2023, Номер 13

Опубликована: Апрель 6, 2023

Atmospheric mercury (Hg) usually tends to accumulate in the upper horizons of soils. However, physico-chemical characteristics some soils, as well pedogenetic processes, past climate changes, or soil degradation can lead a redistribution through profile. In this work, presence and accumulation was studied three deep polycyclic soils from mountainous area NW Iberia Peninsula. The highest total Hg values (Hg T ) were found organic matter-rich O A FL MF profiles (169 139 μg kg −1 , respectively) illuvial horizon RV (129.2 ), with latter two samples showing maximum reservoirs (29.3 29.0 mg m −2 respectively). Despite finding content surface horizons, considerable also observed depths higher than 40–50 cm, indicating importance taking into account these layers when pools are evaluated at global scale. Based on mass transfer coefficients, we rule out contribution parent material most thus that processes responsible for along profiles. Finally, by means principal component analysis (PCA) stepwise linear regression could assess main components involved each horizon. Therefore, PC1 (organic matter low stability Al-hummus complexes) showed influence whereas PC2 (reactive Al-Fe complexes medium-high PC4 (crystalline Fe compounds pH w more relevant distribution deepest layers.

Язык: Английский

Elevated mercury wet deposition in the biodiversity hotspot of Southwestern China DOI

Xiaohui Li,

Dan Hu, Mengjie Lei

и другие.

Environmental Research, Год журнала: 2025, Номер unknown, С. 121201 - 121201

Опубликована: Фев. 1, 2025

Язык: Английский

Процитировано

0
Mercury cycling in the Czech GEOMON network catchments recovering from acid deposition and facing climate change DOI Creative Commons
Tomáš Navrátil,

Jan Rohovec,

James B. Shanley

и другие.

Biogeochemistry, Год журнала: 2025, Номер 168(3)

Опубликована: Апрель 24, 2025

Язык: Английский

Процитировано

0
Predominant contributions through lichen and fine litter to litterfall mercury deposition in a subalpine forest DOI Creative Commons

Jen‐How Huang,

Björn Berg, Chaoyue Chen

и другие.

Environmental Research, Год журнала: 2023, Номер 229, С. 116005 - 116005

Опубликована: Апрель 26, 2023

Язык: Английский

Процитировано

7
Multi-layered physical factors govern mercury release from soil: Implications for predicting the environmental fate of mercury DOI Creative Commons
Monami Kondo, Anna Korre, Takeshi Komai

и другие.

Journal of Environmental Management, Год журнала: 2024, Номер 352, С. 120024 - 120024

Опубликована: Янв. 12, 2024

Despite the recognised risks of human exposure to mercury (Hg), drivers gaseous elemental (GEM) emissions from soil remain understudied. In this study, we aimed identify environmental parameters that affect GEM flux and derive correlations between flux. Principal component analysis (PCA), factor (FA), structural equation modelling (SEM) were performed on samples forest non-forest sites. The associated results revealed impact each parameter flux, either due interaction or as a coherent set parameters. An introductory correlation matrix examining relationship two components showed negative atmospheric pressure at sites, well strong temperature. cases open sites with no trees, PCA FA consistent, indicating pressure, solar irradiance, moisture-defined primary causality-are largely independent contrast, for areas high humidity, tree coverage, shade inconsistent, confirming hypothesis causality affects rather than consequent driven by causality, such air temperature humidity. SEM provided further evidence crucial This study demonstrates importance key parameters, moisture content, can be used predict release soils, Monitoring magnitude these alone may facilitate estimation soils useful detailed soil-air Hg exchange.

Язык: Английский

Процитировано

2
Quarter century of mercury litterfall at a coniferous forest responding to climate change, Central Europe DOI
Tomáš Navrátil,

Jan Rohovec,

Tereza Nováková

и другие.

Environmental Science and Pollution Research, Год журнала: 2024, Номер 31(24), С. 34936 - 34952

Опубликована: Май 8, 2024

Язык: Английский

Процитировано

2
Mercury Accumulation and Sequestration in a Deglaciated Forest Chronosequence: Insights from Particulate and Mineral-Associated Forms of Organic Matter DOI
Fei Wu, Luhan Yang, Xun Wang

и другие.

Environmental Science & Technology, Год журнала: 2023, Номер 57(43), С. 16512 - 16521

Опубликована: Окт. 19, 2023

Understanding mercury (Hg) complexation with soil organic matter is important in assessing atmospheric Hg accumulation and sequestration processes forest ecosystems. Separating into particulate (POM) mineral-associated (MAOM) can help the understanding of dynamics cycling due to their very different chemical constituents associated formation functioning mechanisms. The concentration Hg, carbon, nitrogen contents isotopic signatures POM MAOM a deglaciated chronosequence were determined construct sequestration. results show that are mainly derived from Hg0 deposition. up 76% higher than broadleaf forests 60% coniferous forests. vary vegetation succession. Variations δ202Hg Δ199Hg controlled by source mixing forest. Accumulation subsequent microbial reduction enrich heavier isotopes compared specific nutritional role MAOM.

Язык: Английский

Процитировано

5
Content, association and potential modes of occurrence of mercury in diverse biomass types and their ecological significance DOI Open Access
Stanislav V. Vassilev, Christina G. Vassileva, Mariya Georgieva

и другие.

Geologica Balcanica, Год журнала: 2024, Номер 53(2), С. 69 - 87

Опубликована: Авг. 29, 2024

Toxic Hg species pose a global ecological problem due to the significant anthropogenic emissions of into atmosphere, especially during coal combustion. A study about content, association and potential modes occurrence mercury their significance in eight biomass varieties belonging woody, herbaceous, agricultural aquatic groups was conducted based on combination different chemical mineralogical analyses leaching procedures. The contents these biomasses vary between 0.003 ppm 0.043 (mean 0.013 ppm), which are an order magnitude lower than Clarke value (0.10 ppm). It seems that occurs both inorganic organic matter biomass, as preferable this element include matter, hemicellulose, water-soluble Cl-, S-, N-, Na-bearing chlorides, sulphates, nitrates such halite, sylvite, arcanite, Ca nitrate, nitrocalcite system studied. Alternative renewable C-neutral solid fuels poor appropriate sustainable suggested substitute partially or completely industrial coals enriched (0.14–0.57 ppm) used Bulgarian thermoelectric power plants minimize problems related element.

Язык: Английский

Процитировано

1
Modelling the Fate of Mercury Emissions from Artisanal and Small Scale Gold Mining DOI Creative Commons
Ian M. Hedgecock, Francesco De Simone, Francesco Carbone

и другие.

Опубликована: Апрель 3, 2024

Abstract. A mercury (Hg) tracer model based on WRF-Chem has been developed to provide a rapid and relatively simple tool evaluate the local regional impact of Artisanal Small Scale Gold Mining activities which use Hg amalgamation.Artisanal gold mining, its amalgamation potential for human environmental harm is mentioned specifically in Foreword by Secretary-General United Nations António Guterres Minamata Convention Mercury: Text Annexes (2023 edition, url below). Much this artisanal mining occurs Tropics, often densely forested regions role vegetation global atmospheric cycle shown be significant recent years. The employs lifetime approach Hg0 oxidation KPP an ad hoc deposition scheme calculates foliar uptake Hg0(g) Leaf Area Index, dry HgII(g) , wet convective non-convective precipitation. number demonstration simulations are presented using four example domains from South-East Asia South America, five Africa. results highlight diversity impacts ASGM due land category, geography meteorology, but also point fact that just as there always repercussions burden (https://minamataconvention.org/sites/default/files/documents/information_document/Minamata-Convention-booklet-Oct2023-EN.pdf).

Язык: Английский

Процитировано

0
Behavior of mercury during biomass combustion DOI
Stanislav V. Vassilev, Christina G. Vassileva,

Maria G. Georgieva

и другие.

Review of the Bulgarian Geological Society, Год журнала: 2024, Номер 85(3), С. 178 - 181

Опубликована: Дек. 1, 2024

Toxic Hg species pose a global ecological issue due to the significant anthropogenic emissions of atmosphere. То asses behavior during combustion diverse biomasses, here we discuss published mineralogical and geochemical data on different biomass types present preliminary content results their ashes. About 63–100% in these biomasses were volatilized at 700 °C contents ashes are low (0.0032–0.0452 ppm). Only limited parts captured by specific enriched oxyhydroxides, sulphates, chlorides, carbonates, phosphates. Alternative renewable sustainable poor (0.001–0.043 ppm) suggested substitute partially or completely industrial coals (0.14–0.57 used Bulgarian thermoelectric power plants minimize problems related this element.

Язык: Английский

Процитировано

0
Mercury Content and Pools in Complex Polycyclic Soils From a Mountainous Area in Galicia (NW Iberian Peninsula) DOI Creative Commons
Antía Gómez-Armesto, Melissa Méndez-López, Andrea Parente-Sendín

и другие.

Spanish Journal of Soil Science, Год журнала: 2023, Номер 13

Опубликована: Апрель 6, 2023

Atmospheric mercury (Hg) usually tends to accumulate in the upper horizons of soils. However, physico-chemical characteristics some soils, as well pedogenetic processes, past climate changes, or soil degradation can lead a redistribution through profile. In this work, presence and accumulation was studied three deep polycyclic soils from mountainous area NW Iberia Peninsula. The highest total Hg values (Hg T ) were found organic matter-rich O A FL MF profiles (169 139 μg kg −1 , respectively) illuvial horizon RV (129.2 ), with latter two samples showing maximum reservoirs (29.3 29.0 mg m −2 respectively). Despite finding content surface horizons, considerable also observed depths higher than 40–50 cm, indicating importance taking into account these layers when pools are evaluated at global scale. Based on mass transfer coefficients, we rule out contribution parent material most thus that processes responsible for along profiles. Finally, by means principal component analysis (PCA) stepwise linear regression could assess main components involved each horizon. Therefore, PC1 (organic matter low stability Al-hummus complexes) showed influence whereas PC2 (reactive Al-Fe complexes medium-high PC4 (crystalline Fe compounds pH w more relevant distribution deepest layers.

Язык: Английский

Процитировано

0