Genotoxicity effects in freshwater fish species associated with gold mining activities in tropical aquatic ecosystems

Ecotoxicology and Environmental Safety, Journal Year: 2023, Volume and Issue: 253, P. 114670 - 114670

Published: Feb. 27, 2023

The main aim of this study was to investigate total mercury (THg), methylmercury (MeHg) and arsenic (As) concentrations, their genotoxic effects on fish species in freshwater habitats impacted by gold mining activities the Mojana Bajo Cauca regions (Northern Colombia). A 255 individuals Prochilodus magdalenae (PM) Hoplias malabaricus (HM) were collected different areas northern Colombia, 205 exposed groups: 1 (61), 2 (81) (63); 50 control group. Dorsal muscle analysed for pollutants blood perform micronucleus (MN) erythrocytic nuclear alterations (ENA) tests. results MN revealed statistically significant (p < 0.05) genetic damage both PM (Mojana = 29.7 ± 14.2; 25 6.25; Cauca= 26.6 10.6) HM 17.7 7.8; 20.4 6.3; 20.8 9.8) compared group (PM= 10.5 3.6; HM= 9.1 3.9). Likewise, frequency ENA higher groups 0.05). On other hand, concentrations THg, MeHg As found tissue samples significantly group, being region area highest risk due high THg (651.2 344.5 μg/kg 678.5 983.9 PM) (504.6 220.9 606.8 886.4 PM). Results showed that mean values exceeded WHO maximum limit (set 500 μg Hg/kg) human consumption. suggest DNA erythrocytes is associated with presence Hg, As, coming from activities.

Language: Английский

---

Triazine Herbicide and NPK Fertilizer Exposure: Accumulation of Heavy Metals and Rare Earth Elements, Effects on Cuticle Melanization, and Immunocompetence in the Model Species Tenebrio molitor

Toxics, Journal Year: 2023, Volume and Issue: 11(6), P. 499 - 499

Published: June 1, 2023

The increasing use of agrochemicals, including fertilizers and herbicides, has led to worrying metal contamination soils waters raises serious questions about the effects their transfer different levels trophic web. Accumulation biomagnification essential (K, Na, Mg, Zn, Ca), nonessential (Sr, Hg, Rb, Ba, Se, Cd, Cr, Pb, As), rare earth elements (REEs) were investigated in newly emerged adults Tenebrio molitor exposed field-admitted concentrations a metribuzin-based herbicide an NPK blend fertilizer. Chemical analyses performed using inductively coupled plasma tandem mass spectrometry (ICP-MS/MS) supported by unsupervised pattern recognition techniques. Physiological parameters such as cuticle melanization, cellular (circulating hemocytes), humoral (phenoloxidase enzyme activity) immune responses loss tested exposure markers both sexes. results showed that fertilizer application is main cause REE accumulation beetles over time, besides toxic Ni, Al, V, U) also present herbicide-treated beetles. Cu Zn suggested high potential for food web agroecosystems. Gender differences element males females differ uptake excretion. Differences phenotypic traits show affects metabolic pathways involving sequestration detoxification during transition phase from immature-to-mature beetles, triggering redistribution resources between sexual maturation responses. Our findings highlight importance setting limits metals REEs herbicides avoid adverse on species provide ecosystem services contribute soil health

Language: Английский

---

Source Apportionment and Risk Assessment of Heavy Metals in Agricultural Soils in a Typical Mining and Smelting Industrial Area

Sustainability, Journal Year: 2024, Volume and Issue: 16(4), P. 1673 - 1673

Published: Feb. 18, 2024

Source apportionment and risk assessment are critical for making effective pollution prevention control policies. The study was carried out to assess source-specific ecological human health risks associated with heavy metals in farmland soils Yingtan City based on results of receptor models. Multivariate analysis the APCS-MLR model consistently revealed that As, Ni, Cr agricultural may be mainly derived from natural sources, while contents Cu, Zn, Cd, Pb have been significantly elevated by activities. According outputs model, Cu (34.3%), Zn (67.2%), (75.1%), Cd (67.9%) primarily originated industrial activities related mineral mining non-ferrous metal smelting processes. indicated sources were primary contributor total risks, posing moderate high southern mountainous regions. Natural origins played a significant role due substantial amounts As naturally occurring soils. findings could guide development management measures

Language: Английский

---

A field intercomparison of three passive air samplers for gaseous mercury in ambient air

Atmospheric measurement techniques, Journal Year: 2021, Volume and Issue: 14(5), P. 3657 - 3672

Published: May 20, 2021

Abstract. Passive air samplers (PASs), which provide time-averaged concentrations of gaseous mercury over the timescale weeks to months, are promising for filling a gap in monitoring atmospheric worldwide. Their usefulness will depend on their ease use and robustness under field conditions, availability affordability, most notably, ability results acceptable precision accuracy. Here we describe comparative evaluation three PASs with respect precisely accurately record background at sites both southern Italy Ontario, Canada. The study includes CNR-PAS gold nanoparticles as sorbent, developed by Italian National Research Council, IVL-PAS using an activated carbon-coated disk, Swedish Environmental Institute, MerPAS® sulfur-impregnated carbon University Toronto commercialized Tekran. Detection limits deduced from variability amount quantified more than 20 blank samples each PAS. Analytical sampling is through 22 triplicate deployments PAS, ranging duration 2 12 weeks. Accuracy bias assessed comparison elemental recorded Tekran 2537 automated analyzers operating alongside locations. performance was significantly better Italy, all them providing that not different average instruments. In Canada, where weather conditions were much harsher variable during February April deployment period, there differences amongst PASs. At sites, currently sensitive, precise, accurate among A key reason this larger size radial configuration MerPAS®, lower levels relative sequestered amounts when compared other two PASs, rely axial diffusion geometries. Since correction becomes relatively smaller longer deployments, tends be closer 8

Language: Английский

---

Agriculture management and seasonal impact on soil properties, water, sediment and chemicals transport in a hazelnut orchard (Croatia)

The Science of The Total Environment, Journal Year: 2022, Volume and Issue: 839, P. 156346 - 156346

Published: May 28, 2022

Language: Английский

---

Photochromic sensing of La3+ and Lu3+ ions using poly(caprolactone) fibers doped with spiropyran dyes

Journal of Photochemistry and Photobiology A Chemistry, Journal Year: 2024, Volume and Issue: 452, P. 115568 - 115568

Published: March 3, 2024

Language: Английский

---

Rare earth elements reveal the human health and environmental concerns in the largest tributary of the Mekong river, Northeastern Thailand

Environmental Research, Journal Year: 2024, Volume and Issue: 252, P. 118968 - 118968

Published: April 21, 2024

Language: Английский

---

Ecological and human health risk of heavy metals in Nubui River: a case of rural remote communities

Frontiers in Water, Journal Year: 2024, Volume and Issue: 6

Published: June 10, 2024

Introduction The Nubui River is a primary source of water for drinking purposes and other domestic activities in the rural communities dotted along its riparian zone, with agriculture being major activity occurring this important ecotone. river has become potential sink agrochemical residue, including heavy metals, apparent aesthetic quality issues, associated health consequences. This study, therefore, assessed risks metals within populations catchment areas, who have limited sources improved supply. Methods concentration iron (Fe), lead (Pb), cadmium (Cd), mercury (Hg), zinc (Zn) was on cumulatively 275 samples, using Perkin Elmer PINAAcle 900 T atomic absorption spectrophotometer 11 months. A cross-sectional survey conducted amongst 338 community members, following field observations utilisation types, appeal, perceived from River. To determine human ecological hazard quotient, chronic daily intake, contamination factor, pollution indices were computed. STATA version 16 used to analyse results. Results Descriptive statistics average concentrations surface at all sampling stations showed pattern Hg &lt; Pb Cd Zn Fe, relatively low concentrations, between 0.001 0.004 mg/L Hg, 0.0011 0.0019 Pb, 0.0461 0.0739 Zn, 0.2409 0.377 Fe. findings, however, high levels 0.0215 0.0383 two five comparison World Health Organisation (WHO) guideline values some Hazard quotient indicate that population safe non-carcinogenic exposure through oral routes. factor metal exceed recommended 1 100, respectively. Meanwhile, 73.1% members evidently preferred various 86.1% them utilising it purposes. occurrence results risks.

Language: Английский

---

Impact of sugarcane cultivation on the geochemistry of rare earth elements in Cretaceous rhyolite-derived soils, Northeastern Brazil

CATENA, Journal Year: 2025, Volume and Issue: 249, P. 108700 - 108700

Published: Jan. 7, 2025

Language: Английский

---

Evaluating the bioavailability of rare earth elements in paddy soils and their uptake in rice grains for human health risk

Environmental Geochemistry and Health, Journal Year: 2025, Volume and Issue: 47(2)

Published: Jan. 13, 2025

Language: Английский

---