Continuous and near real-time measurements of gaseous elemental mercury (GEM) from an Unmanned Aerial Vehicle: A new approach to investigate the 3D distribution of GEM in the lower atmosphere

Cabassi, Jacopo; Lazzaroni, Marta; Giannini, Luciano; Mariottini, D.; Nisi, Bárbara; Rappuoli, Daniele; Vaselli, Orlando

doi:10.1016/j.chemosphere.2021.132547

Cited by 12 publications

(5 citation statements)

References 70 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Gaseous elemental mercury concentrations (μg m −3 ) were recorded during the experiments using a Lumex® RA-915 M analyzer (see Cabassi et al ( 2022 ) for instrument specification and principle of operation). Measurements were carried out approximately once a week for at least 24 h (1 measure per minute) just next (10–30 cm) to the biomonitoring species.…”

Section: Methodsmentioning

confidence: 99%

Mercury accumulation efficiency of different biomonitors in indoor environments: the case study of the Central Italian Herbarium (Florence, Italy)

Ciani,

Fornasaro,

Benesperi

et al. 2023

Environ Sci Pollut Res

View full text Add to dashboard Cite

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, and Hypnum cupressiforme moss, was investigated in controlled (indoor) conditions. In comparison to outdoor environments, controlled conditions offer the opportunity to investigate more in detail the variables (humidity, temperature, pollutants speciation, etc.) that control Hg uptake. The biomonitors were exposed in two distinct periods of the year for 2 and 12 months respectively, in the halls of the Central Italian Herbarium (Natural History Museum of the University of Florence, Italy), which are polluted by Hg, due to past plant sample treatments. The Hg sorption trend was monitored every 3 weeks by recording: (i) the Hg content in the substrata, (ii) gaseous elemental mercury (GEM) concentrations in the exposition halls, (iii) temperature, (iv) humidity, and (v) particulate matter (PM) concentrations. At the end of the experiment, Hg concentrations in the biomonitors range from 1130 ± 201 to 293 ± 45 μg kg−1 (max–min) in barks, from 3470 ± 571 to 648 ± 40 μg kg−1 in lichens, and from 3052 ± 483 to 750 ± 127 μg kg−1 in mosses. All the biomonitors showed the highest Hg accumulation after the first 3 weeks of exposure. Mercury concentrations increased over time showing a continuous accumulation during the experiments. The biomonitors demonstrated different Hg accumulation trends in response to GEM concentrations and to the different climatic conditions (temperature and humidity) of the Herbarium halls. Barks strictly reflected the gaseous Hg pollution, while lichen and moss accumulation was also influenced by the climatic conditions of the indoor environment. Mercury bound to PM seemed to provide a negligible contribution to the biomonitors final uptake.

show abstract

Section: Methodsmentioning

confidence: 99%

Mercury accumulation efficiency of different biomonitors in indoor environments: the case study of the Central Italian Herbarium (Florence, Italy)

Ciani,

Fornasaro,

Benesperi

et al. 2023

Environ Sci Pollut Res

View full text Add to dashboard Cite

show abstract

“…Many additional studies of Cabassi at al. [ 7 ], Aldhyani et al [ 3 ], and Tuli et al [ 16 ], have looked at the security dangers and issues that drones pose. Khan et al [ 17 ] presented an effective and intelligent edge-assisted IDT authentication scheme that secured the NoD.…”

Section: Literature Reviewmentioning

confidence: 99%

“…The widespread adoption of drone technology has posed issues, in addition to security, in terms of liability, privacy, and regulation. Reduced-sized UAVs offer several advantages in shipping, distribution, and privacy such that drone technology has become a part of daily lives [ 7 ]. The security and privacy of these drones, on the other hand, are a major concern.…”

Section: Introductionmentioning

confidence: 99%

Smart Cybersecurity Framework for IoT-Empowered Drones: Machine Learning Perspective

Aldaej

Ahanger

Atiquzzaman

et al. 2022

Sensors

View full text Add to dashboard Cite

Drone advancements have ushered in new trends and possibilities in a variety of sectors, particularly for small-sized drones. Drones provide navigational interlocation services, which are made possible by the Internet of Things (IoT). Drone networks, on the other hand, are subject to privacy and security risks due to design flaws. To achieve the desired performance, it is necessary to create a protected network. The goal of the current study is to look at recent privacy and security concerns influencing the network of drones (NoD). The current research emphasizes the importance of a security-empowered drone network to prevent interception and intrusion. A hybrid ML technique of logistic regression and random forest is used for the purpose of classification of data instances for maximal efficacy. By incorporating sophisticated artificial-intelligence-inspired techniques into the framework of a NoD, the proposed technique mitigates cybersecurity vulnerabilities while making the NoD protected and secure. For validation purposes, the suggested technique is tested against a challenging dataset, registering enhanced performance results in terms of temporal efficacy (34.56 s), statistical measures (precision (97.68%), accuracy (98.58%), recall (98.59%), F-measure (99.01%), reliability (94.69%), and stability (0.73).

show abstract

“…However, direct measurements of Hg 0 fluxes from these substrates are still scarce [22,23]. A more profound understanding of the processes that lead to the release of high amounts of Hg from these sites is of interest both on a local scale to prevent the occurrence of high atmospheric Hg concentrations and on a global scale to better understand the dispersion of this metal in the environment [18,[24][25][26].…”

Section: Introductionmentioning

confidence: 99%

Evasion of Gaseous Elemental Mercury from Forest and Urban Soils Contaminated by Historical and Modern Ore Roasting Processes (Idrija, Slovenia)

et al. 2023

View full text Add to dashboard Cite

Considerable amounts of gaseous elemental mercury (Hg0) can be released into the atmosphere from Hg-enriched substrates, such as those from former mining areas, posing a potential environmental threat. In this work, Hg0 fluxes at the soil–air interface under natural vegetation covers were measured in various locations within the Idrija Hg mining area (Slovenia) and its surroundings. Sites were selected in order to compare Hg0 fluxes from both forest soils heavily impacted by historical ore roasting and urban soils characterised by a different degree of Hg enrichment due to the natural occurrence of Hg in rocks or recent mining and roasting processes. Replicate measurements at each site were conducted using a non-steady state flux chamber coupled with a real-time Hg0 analyser (Lumex RA-915M). Moreover, topsoil samples (0–2 cm) were analysed for Hg total concentration and speciation. Cinnabar was the predominant Hg form in almost all the sites. Despite Hg0 being undetectable in soils using thermo-desorption, substantial emissions were observed (70.7–701.8 ng m−2 h−1). Urban soils in a naturally enriched area showed on average the highest Hg0 fluxes, whereas relatively low emissions were found at the historical roasting site, which is currently forested, despite the significantly high total Hg content in soils (up to 219.0 and 10,400 mg kg−1, respectively). Overall, our findings confirm that shading by trees or litter may effectively limit the amount of Hg0 released into the atmosphere even from extremely enriched soils, thus acting as a natural mitigation.

show abstract

Continuous and near real-time measurements of gaseous elemental mercury (GEM) from an Unmanned Aerial Vehicle: A new approach to investigate the 3D distribution of GEM in the lower atmosphere

Cited by 12 publications

References 70 publications

Mercury accumulation efficiency of different biomonitors in indoor environments: the case study of the Central Italian Herbarium (Florence, Italy)

Mercury accumulation efficiency of different biomonitors in indoor environments: the case study of the Central Italian Herbarium (Florence, Italy)

Smart Cybersecurity Framework for IoT-Empowered Drones: Machine Learning Perspective

Evasion of Gaseous Elemental Mercury from Forest and Urban Soils Contaminated by Historical and Modern Ore Roasting Processes (Idrija, Slovenia)

Contact Info

Product

Resources

About