Environmental Geochemistry and Health 
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This is an RSS file. You can use it to subscribe to this data in your favourite RSS reader or to display this data on your own website or blog.Microplastics and associated polycyclic aromatic hydrocarbons in surface water and sediment of the Bay of Bengal coastal area, India: sources, pathway and ecological risk
AbstractIn the aquatic environment around the world, microplastic contamination has been a common and ongoing issue. Particularly, the ability of microplastics to absorb persistent organic pollutants (POPs) and then transmit these POPs to aquatic creatures has attracted a lot of interest. A stereomicroscope was used to detect the size, shape, and color of the microplastics (MPs), and Fourier Transform Infrared (FTIR) spectroscopy was used to identify the polymer composition of the MPs. To address MP transit, destiny, and mitigation, a study of MP pollution coastal areas is required. In the current study, MP pollution in th...
Source: Environmental Geochemistry and Health - April 22, 2024 Category: Environmental Health Source Type: research
Evaluation of irrigation, drinking, and risk indices for water quality parameters of alpine lakes
This study examined the water characteristics of various alpine lakes in Gilgit-Baltistan, Northern Pakistan. For this purpose, water was sampled and investigated for basic parameters, anions, and cations using the multi-parameter analyzers and atomic absorption spectrophotometer. Physicochemical parameters of alpine lakes were noted under the World Health Organization water guidelines, except for fluoride (F−) and turbidity in 4.3% and 36% of samples, respectively. Water quality index (WQI) classified samples (93%) as excellent and good quality (7%). Results showed maximum chronic daily intake values (0.14 ± 0.01...
Source: Environmental Geochemistry and Health - April 15, 2024 Category: Environmental Health Source Type: research
Systematic review and meta-analysis of arsenic concentration in drinking water sources of Iran
AbstractRecent studies have found arsenic contamination of drinking water in some parts of Iran, as in many other countries. Thus, a comprehensive systematic review is necessary to assess the distribution and concentration of arsenic in drinking water sources. For this purpose, articles published from the first identification until December 2023, were retrieved from various national and international databases. Of all the studies examined (11,726), 137 articles were selected for review based on their conceptual relationship to this survey. A review of the extracted studies presented that ICP methods (ICP-MS, ICP-OES, 56%) ...
Source: Environmental Geochemistry and Health - April 9, 2024 Category: Environmental Health Source Type: research
Groundwater hydrochemical signatures, nitrate sources, and potential health risks in a typical karst catchment of North China using hydrochemistry and multiple stable isotopes
In this study, hydrochemical compositions, multiple stable isotopes ( δ2H –H2O, δ18Ο–Η2Ο, δ15Ν–ΝΟ3−, and δ18Ο–ΝΟ3−), and Bayesian stable isotope mixing model (MixSIAR) were applied to elucidate nitrate pollution sources in groundwater of the Yangzhuang Basin. The Durov diagram identified the dominant groundwater chemical face as Ca –HCO3 type. The NO3− concentration ranged from 10.89 to 90.45 mg/L (average 47.34 mg/L), showing an increasing trend from the upstream forest and grassland to the downstream agricultural dominant area. It is worth noting that 47.2% of groundwater samples exceeded ...
Source: Environmental Geochemistry and Health - April 9, 2024 Category: Environmental Health Source Type: research
Facile fabrication of amorphous Al/Fe based metal –organic framework as effective heterogeneous fenton catalyst for environmental remediation
This study presents a facile preparation and durable amorphous Fe and Al-based MOF nanoplate (AlFe-BTC MOFs) catalyst with notable stability in Fenton reactions. Rigorous characterization using XRD, HR-TEM, and BET confirms the amorphous nature of the synthesized AlFe-BTC MOFs, revealing mesopores (3.4 nm diameter), a substantial surface area (232 m2/g), and a pore volume of 0.69 cc/g. XPS analysis delineates distinct Al2p and Fe2p binding energy values, signifying specific chemical bonding. FE-SEM elemental mapping elucidates the distinctive distribution of Fe and Al within the framework of AlFe-BTC MOFs. In catalytic...
Source: Environmental Geochemistry and Health - April 9, 2024 Category: Environmental Health Source Type: research
Fluorine contamination, mobility, and risks in soils at a phosphate-gypsum waste landfill: a new analytical method and comparison with previous methods
This study used a new X-ray fluorescence (XRF)-based analytical method with better precision and sensitivity to evaluate the fluorine concentrations in soil. It was hypothesized that the XRF method with a pellet-synthesizing procedure may effectively analyze the fluorine concentrations in soil with ease and reliability. The total fluorine concentrations determined using XRF were compared with those determined using three different types of analytical protocols —incineration/distillation, alkaline fusion, and aqua regia extraction procedures. Among the three procedures, the incineration/distillation procedure did not show...
Source: Environmental Geochemistry and Health - April 9, 2024 Category: Environmental Health Source Type: research
Comparative analysis of sediment quality indices using different reference values in an environmental protection area in Southeastern Brazil
This study aimed to investigate variations in the results of five indices, employing global, regional, and quality reference values, based on sediment samples collected from rivers in the Ipanema National Forest, a protected area in Brazil exposed to various anthropogenic pressures. The results revealed that elements such as Al, Fe, and Mn exceeded the limits allowed by legislation in water samples, while As and Cr surpassed the limits in sediment samples. Comparative analysis highlighted significant discrepancies in the results of the indices when global reference values were used compared to regional and quality referenc...
Source: Environmental Geochemistry and Health - April 9, 2024 Category: Environmental Health Source Type: research
Mitigation of caffeine micropollutants in wastewater through Ag-doped ZnO photocatalyst: mechanism and environmental impacts
This study explores the efficacy of Ag-doped ZnO (Ag/ZnO) for removing M-CF from wastewater. The characterization of Ag/ZnO underscores the crucial role of band gap energy in the photocatalytic degradation process. This parameter influences the separation of electrons and holes (e−/h+) and the generation of reactive radicals. Under solar light, Ag/ZnO demonstrated markedly superior photocatalytic activity, achieving an impressive degradation efficiency of approximately 93.4%, in stark contrast to the 53.2% occurred by ZnO. Moreover, Ag/ZnO exhibited a remarkable degradation efficiency of M-CF in wastewater, reaching 83.5...
Source: Environmental Geochemistry and Health - April 9, 2024 Category: Environmental Health Source Type: research
Pollution levels and probability risk assessment of potential toxic elements in soil of Pb –Zn smelting areas
This study is expected to provide guidance for soil remediation in Pb–Zn smelting areas.Graphical abstract (Source: Environmental Geochemistry and Health)
Source: Environmental Geochemistry and Health - April 9, 2024 Category: Environmental Health Source Type: research
Methylated derivatives of polycyclic aromatic hydrocarbons in road dust, green belt soil and parking lot dust: occurrence, spatial distribution and emission sources
This study demonstrated the presence of Me-PAHs with high concentrations in the road environment samples of Harbin. (Source: Environmental Geochemistry and Health)
Source: Environmental Geochemistry and Health - April 9, 2024 Category: Environmental Health Source Type: research
Neighborhood-scale lead (Pb) speciation in Akron, Ohio (USA) soils: primary sources, post-deposition diagenesis, and high concentrations of labile Pb
AbstractLead (Pb) poses a significant risk to infants and children through exposure to contaminated soil and dust. However, there is a lack of information on Pb speciation and distribution at the neighborhood-scale. This work aimed to determine: (1) the distribution of acid-extractable (labile) Pb and other metals ([M]AE) in two neighborhoods in Akron, Ohio (USA) (Summit Lake and West Akron; n = 82 samples); and (2) Pb speciation and potential sources. Total metal concentration ([M]T) and [M]AE was strongly correlated for Pb and Zn (R2 of 0.66 and 0.55, respectively), corresponding to 35% and 33% acid-extractability. ...
Source: Environmental Geochemistry and Health - April 9, 2024 Category: Environmental Health Source Type: research
Joint toxicity of cadmium (II) and microplastic leachates on wheat seed germination and seedling growth
This study has important implications for the joint toxicity of Cd2+ solution and microplastic leachates in agriculture.Graphical abstract (Source: Environmental Geochemistry and Health)
Source: Environmental Geochemistry and Health - April 9, 2024 Category: Environmental Health Source Type: research
Floristic changes and environmental drivers of soil fungi and archaea in different salt-tolerant plant communities in the intertidal habitat of coastal wetlands
In this study, fungal and archaea communities in soils ofSuaeda salsa,Phragmites australis, andSpartina alterniflora in the intertidal habitat of coastal wetlands were selected for research. Soil fungi and archaea were analyzed for diversity, community structure, and function using high throughput ITS and 16S rRNA gene sequencing. The study revealed significant differences in fungi and archaea ’s diversity and community structure in the rhizosphere soil of three plant communities. At the same time, there is no significant difference in the functional groups. SOM, TP, AP, MC, EC and SOM, TN, TP, AP, MC, EC are the primary...
Source: Environmental Geochemistry and Health - April 9, 2024 Category: Environmental Health Source Type: research
The aging behavior of degradable plastic polylactic acid under the interaction of environmental factors
This study used response surface methodology (RSM) to investigate the impact of temperature, light, and humidity on the aging characteristics of polylactic acid (PLA). Key evaluation metrics included the C/O ratio, functional groups, crystallinity, surface topography, and mechanical properties. Humidity was discovered to have the greatest effect on the ageing of PLA, followed by light and temperature. The interactions between temperature and light, as well as humidity and sunlight, significantly impact the aging of PLA. XPS analysis revealed PLA underwent aging due to the cleavage of the ester bond (O –C=O), resulting in...
Source: Environmental Geochemistry and Health - April 9, 2024 Category: Environmental Health Source Type: research
Long-term exposure to fine particulate matter constituents in relation to chronic kidney disease: evidence from a large population-based study in China
This study sought to examine the association between long-term exposure to major PM2.5 constituents and CKD and look for potential constituents contributing substantially to CKD. This study included 81,137 adults from the 2018 to 2019 baseline survey of China Multi-Ethnic Cohort. CKD was defined by the estimated glomerular filtration rate. Exposure concentration data of 7 major PM2.5 constituents were assessed by satellite remote sensing. Logistic regression models were used to estimate the effect of each PM2.5 constituent exposure on CKD. The weighted quantile sum regression was used to estimate the effect of mixed exposu...
Source: Environmental Geochemistry and Health - April 9, 2024 Category: Environmental Health Source Type: research
