Tài liệu miễn phí Môi trường
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Benzophenone-3 and ethylhexyl methoxycinnamate UV filters in freshwater environments: A Laurentian Great Lakes data needs analysis for assessing environmental risk
This exercise illustrated key data gaps needed to conduct a more representative exposure assessment, such as environmental partitioning potential and consumer sunscreen usage amounts.
4/5/2023 9:32:53 PM +00:00
A pilot in vivo evaluation of Sb(III) and Sb(V) genotoxicity using comet assay and micronucleus test on the freshwater fish, silver perch Bidyanus bidyanus (Mitchell, 1838)
This pilot investigation has indicated that sub-lethal waterborne Sb(III) exposure manifests in genotoxic effects in freshwater fish species, which may have consequences for resilience and survival. Further study is needed for deeper insight into the relationship between Sb(III) and genotoxicity and the multiple biomarker responses that need assessment to evidence effects.
4/5/2023 9:32:43 PM +00:00
A comprehensive review on micro-plastic pollution in African aquatic systems
The distribution of micro-plastics (MPs) has been documented all over the world though there is a paucity of data in Africa. The study aimed to recapitulate existing information on MP pollution in African aquatic environments and to identify existing research gaps. Only 42% of the studies reported on polymer type citing lack of availability of Fourier Transform Infrared Spectroscopy or other instrumental equipment.
4/5/2023 9:32:34 PM +00:00
Inverse fluidised bed bioreactor enabled high-rate selenate reduction for wastewater treatment
This study evaluated the performance of a laboratory-scale inverse fluidised bed reactor (IFBR) for biological selenate reduction at 30◦C. The IFBR with floating biomass carriers was fed with synthetic mine water (pH 6.0–7.0) containing ~10 mM (1.4 g L− 1 ) selenate, nutrients and 10 mM ethanol as electron donor and inoculated with selenate reducers enriched from anaerobic sludge and environmental samples.
4/5/2023 9:32:24 PM +00:00
Toxicity, microbial degradation and analytical detection of pyrethroids: A review
Due to environmental concerns linked with the accumulation of pyrethroids pesticides in groundwater and food products, there is an urgent need to develop rapid, economical and reliable methods amenable to on-site applications.
4/5/2023 9:32:17 PM +00:00
The who, why and where of Norway’s CO2 emissions from tourist travel
Our study shows that officially reported emissions, as limited to the countries territory, are not suitable for accurate evaluation of transport CO2 emissions related to tourism. A consumer or tourist-based calculation gives a marked redistribution of emission responsibility.
4/5/2023 9:32:06 PM +00:00
Contamination of water and food crops by trace elements in the African Copperbelt: A collaborative cross-border study in Zambia and the Democratic Republic of Congo
This unique cross-border study documented metal contamination of drinking water and locally grown vegetables near mining activities in Zambia and DRC, with the contamination being worse in DRC. The higher pollution observed in DRC compared to Zambia must largely be attributed to differences in environmental governance between the two countries.
4/5/2023 9:31:58 PM +00:00
Occurrence and probabilistic health risk assessment (PRA) of dissolved metals in surface water sources in Southern Peru
The potential sources of transition metal contamination were deduced by applying the multivariant statistical technique, principal component analysis (PCA), to the extensive sample dataset that included 35 variables and a total of 7,686 data of metal, metalloids, and other constituent concentrations, as well as physicochemical parameters. A Spanish translation of this paper is available in the online Supplementary Material.
4/5/2023 9:31:46 PM +00:00
Contribution of industrial and traffic emissions to ultrafine, fine, coarse particles in the vicinity of industrial areas in Japan
The present study sought to clarify the contributions to PM mass of ultrafine, fine (PM2.5), and coarse particles (PM10 – PM2.5) in an urban–industrial area with multiple emission sources. We performed both online measurements of PM at a high temporal resolution and size-resolved offline measurements.
4/5/2023 9:31:35 PM +00:00
Fate, bioaccumulation and toxic effects of triclosan on a freshwater community – A mesocosm study
The antibacterial agent triclosan (TCS) is added to many daily-used consumer products and can therefore reach the aquatic environment via treated wastewater and potentially harm aquatic ecosystems. A 120 days pond mesocosm study was conducted in order to investigate the fate of TCS in water and sediment, its bioaccumulative potential in different biota as well as the effects of TCS and its main transformation product methyl-triclosan (MTCS) on plankton, periphyton, macrophytes, and benthos communities.
4/5/2023 9:31:26 PM +00:00
Selenium-rich mine effluents treatment using zero-valent iron: Mechanism and removal efficiency in the cold climate of Qu´ebec, Canada
This element is not yet regulated in Canada, and requires the development of sophisticated water treatment technologies at large scale. Increasing evidences suggest that zero-valent iron (ZVI) is an effective reagent for the treatment and removal of selenium from mine water
4/5/2023 9:31:17 PM +00:00
Uranium exposure and health risk implications: A preliminary study among the residents living around uranium mining sites in the Southern Province of Zambia
The current study findings indicate elevated exposure levels to U, particularly among the U-mining area residents in Siavonga, Zambia. Practical measures that could limit exposure to U, particularly among the U-mining area residents should be encouraged.
4/5/2023 9:31:10 PM +00:00
A reflectance-based water quality index and its application to examine degradation of river water quality in a rapidly urbanising megacity
The main reason for increasing river water pollution may be linked to the contaminant load which has increased extensively in recent years. The approach developed in this study may be used in other urban rivers, particularly in Asia.
4/5/2023 9:31:01 PM +00:00
Sensitive and rapid detection of trace microplastics concentrated through Au-nanoparticle-decorated sponge on the basis of surface-enhanced Raman spectroscopy
The sponge pores decorated with Au nanoparticles could effectively capture and concentrate microplastics in the pores from aquaes sample. Interestingly, the adjustable size of the sponge could allow the distance between the “hot spots” on the substrate surface to be controlled, hence controlling the SERS signal intensity.
4/5/2023 9:30:49 PM +00:00
Comparative phytoremediation potentials of Impatiens balsamina L. and Crotalaria retusa L. for soil contaminated with used lubricating
The aim of this study was to investigate the phytoremediation potentials of Crotalaria retusa L. and Impatiens balsamina for ULO contaminated soil. A randomized block pot experiment was conducted for each species under plant house conditions in soil contaminated with ULO at a concentration of 5,000 mg kg− 1 (0.5% w/w)-30,000 mg kg− 1 (3% w/w).
4/5/2023 9:30:36 PM +00:00
An investigation of groundwater vulnerability in the North 24 parganas district using DRASTIC and hybrid-DRASTIC models: A case study
The results from four DRASTIC models show that about 14.20% of the study area is covered by low vulnerable zone, 24.28% by moderately high, 37.67% by high, and about 20.45% of the area is under very highly vulnerable zone.
4/5/2023 9:30:19 PM +00:00
Adamantane carboxylic acids demonstrate mitochondrial toxicity consistent with oil sands-derived naphthenic acids
The purpose of this study was to determine if commercially available adamantane carboxylic acids act by mitrochondrial mechanisms similar to NAs found in OSPW. Mitochondria isolated from rainbow trout (Oncorhynchus mykiss) liver were exposed to commercially available adamantane acids, 3-hydroxyadamantane-1-carboxylic acid (CAS 42711-75-1) and 3,5-dimethyladamantane-1-carboxylic acid (CAS 14670-94-1), or to NAs extracted and purified from OSPW.
4/5/2023 9:30:12 PM +00:00
Linkages between plant rhizosphere and animal gut environments: Interaction effects of pesticides with their microbiomes
The evolutionary and microbiome perspectives on the rhizosphere and animal guts as the hotspots of metabolic and horizontal gene transfer (HGT) events need careful considerations to mitigate the risks and health hazards due to extensive and intensive application of synthetic chemical pesticides in the modern agriculture.
4/5/2023 9:30:03 PM +00:00
Actual decay of tetrachloroethene (PCE) and trichloroethene (TCE) in a highly contaminated shallow groundwater system
The main attention was paid to the dehalogenation of organochlorine compounds. The research included chlorinated ethane’s and chlorinated methane’s. In the groundwater samples, the most common components from the group of chlorinated ethenes were determined, i. e. tetrachloroethene (PCE), trichlorethylene (TCE), dichloroethene (DCE) and vinyl chloride (VC) as well as typical components from the group of chlorinated methane’s, i.e. tetrachloromethane (PCM), trichloromethane (TCM) and dichloromethane (DCM), were also made.
4/5/2023 9:29:53 PM +00:00
A practical study of CITES wood species identification by untargeted DART/QTOF, GC/QTOF and LC/QTOF together with machine learning processes and statistical analysis
The inability of traditional methodologies and DNA analysis to readily perform wood identification to the species level for monitoring has stimulated research on chemotyping techniques. In this study, simple wood extraction of endangered rosewoods (Dalbergia spp), amenable to use in the field, produced colorful hues that were suggestive of wood species.
4/5/2023 9:29:44 PM +00:00
Per- and polyfluoroalkyl substances (PFAS) in sediments collected from the Pensacola Bay System watershed
These results could be due to the proximity of this site to a paper manufacturing company. Site PBS 21, which is close to the Pensacola International Airport (PNS), had the second highest concentration of PFAS with 1.68 ng g− 1 .
4/5/2023 9:29:36 PM +00:00
Characterization of the submarine disposal of a Bayer effluent (Gardanne alumina plant, southern France): II. Chemical composition of the clarified effluent and mineralogical composition of the concretions formed by its discharge in the Mediterranean Sea
The Gardanne alumina plant (Marseille region, Southeast France) has disposed its residues as a slurry (red muds) in the Mediterranean Sea up to 2015 when new regulations allowed the sole discharge of a clarified effluent. This reduced the quantity of suspended material from ~300 g/L to less than 10 mg/L.
4/5/2023 9:29:27 PM +00:00
Removal of pharmaceutical compounds from municipal wastewater by bioaugmentation with fungi: An emerging strategy using fluidized bed pelleted bioreactor
The bioaugmentation for removing the pharmaceuticals in municipal wastewater by Trametes versicolor and Aspergillus luchuensis using fluidized bed pelleted bioreactor was studied. To find the optimal performance of bioaugmentation by both fungi periodical biomass volume, 10 and 50 g per 1.25 L bioreactor, were tested.
4/5/2023 9:29:18 PM +00:00
Presence, persistence and distribution of thymol in honeybees and beehive compartments by high resolution mass spectrometry
The present study evaluates the presence, persistence and distribution of thymol during a five-month sampling period; before, during and after the application of thymol treatment in field conditions. Moreover, its impact on the development of bee brood was also studied at different development stages which consist of larvae, prepupae, pupae and adult honeybee.
4/5/2023 9:29:11 PM +00:00
Macroplastics contamination on glaciers from Italian Central-Western Alps
The present work aimed at investigating the presence of macroplastics on five glaciers of the Italian Central-Western Alps, namely Cedec and Forni glaciers (Ortles-Cevedale group) and Indren, Lys and Verra glaciers (Monte Rosa group). In late spring-summer of 2020, macroplastics were collected along normal access paths leading to some peaks of these mountain groups
4/5/2023 9:29:01 PM +00:00
Overview of fungal bioleaching of metals
This article has reviewed the progress that has been made in bioleaching research of metals using filamentous fungi. This review has focused on fungal bioleaching from various metal sources, including mine tailings, electronic waste, solid mine wastes, spent catalysts, and low-grade ores. Filamentous fungi are used in bioleaching due to their ability to secrete organic acids and facilitate the solubilization of metal ions from the solution phase.
4/5/2023 9:28:51 PM +00:00
Seed priming with karrikinolide improves growth and physiochemical features of coriandrum sativum under cadmium stress
The KAR1 treated seedlings showed improved gas exchange attributes and metal tolerance index. In summary, these findings advocate that KAR1 enhances plant stress tolerance by modulating the antioxidative machinery and reducing the level of stress biomarkers.
4/5/2023 9:28:44 PM +00:00
Hydro/solvothermally synthesized visible light driven modified SnO2 heterostructure as a photocatalyst for water remediation: A review
The evolution of industrialization has been marked by an increase in the utilization of chemically derived new products. Water bodies like sea, rivers and lakes are frequently contaminated by industrial wastewater which discarded toxic pollutants such as dyes and heavy metals that possess carcinogenic mutagenic properties.
4/5/2023 9:28:33 PM +00:00
Cassava flour extracts solution to induce gelatin cross-linked activated carbon-graphene oxide composites: The adsorption performance of dyes from aqueous media
The relatively good performance for the removal of Direct Red 23 (DR23) by the composites was observed. The adsorption capacity of MB and DR23 by PAC-GO was 248.14 mg/g and 114.81 mg/g, respectively, while for MB and DR23 by GAC-GO, they were 222.72 mg/g and 66.80 mg/g, respectively.
4/5/2023 9:28:23 PM +00:00
A screening model for managing periodic pesticide application in residential lawn soils
The comparisons of the periodic model and approximate method using regular rainfall or irrigation conditions demonstrate the validity of the approximate method; based on this, the overall weighted specific loss rate and half-lives of over 3,000 organic compounds were derived.
4/5/2023 9:28:11 PM +00:00