Physics and Chemistry of the Earth最新文献_第4页

Effect of acid mine drainage on colloidal organic matter in the river: Changes in composition and copper binding behavior

IF 3 3区地球科学

Physics and Chemistry of the Earth Pub Date : 2025-01-16 DOI: 10.1016/j.pce.2025.103873

Yanqing Ding , Chengliang Wang , Puyu Qi , Mengyang Sun , Zhiru Hu , Zhimin Xu

{"title":"Effect of acid mine drainage on colloidal organic matter in the river: Changes in composition and copper binding behavior","authors":"Yanqing Ding , Chengliang Wang , Puyu Qi , Mengyang Sun , Zhiru Hu , Zhimin Xu","doi":"10.1016/j.pce.2025.103873","DOIUrl":"10.1016/j.pce.2025.103873","url":null,"abstract":"<div><div>Acid mine drainage (AMD) releases heavy metals, deteriorating the regional environment. Copper (Cu) is often found in AMD, and the migration and transformation are controlled by colloidal organic matter (COM). In this study, COM in the AMD-affected river was extracted by ultrafiltration, compositions of COM were detected by ultraviolet–visible and fluorescence spectra, and the binding behavior of COM with Cu was revealed by two-dimensional correlation spectroscopy analysis of synchronous fluorescence. The results found that COM in the AMD-affected river mainly originated from autochthonous sources, including microbial-derived humic-like, fulvic-like, and tryptophan-like fluorescence components. The fluorescence proportion of the first two was relatively higher, accounting for 78.71–83.90% in river and 78.65–91.03% in sediment. AMD decreased riverine COC by 0.24 mg·L<sup>−1</sup> and <em>a</em>(350) by 13.83%, but increased the aromaticity and molecular weight of riverine COM downstream, while AMD increased COM contents in river sediment. The redundancy analysis found the explanatory power of Cu was 44.4%, and thus Cu was the primary environmental driving factor in the AMD-affected river. Fluorescence quenching titration found that microbial-derived humic-like substances were the most sensitive to Cu(II) titration. Cu(II) was preferentially bound to fulvic-like substances of riverine COM and with tryptophan-like substances of sediment COM. AMD delayed the binding sequences of tryptophan-like substances in riverine COM at the inlet and fulvic-like substances in downstream sediment COM with Cu(II), and weakened the binding affinity of COM with Cu(Ⅱ) at 2.03%–6.61% in downstream sediment to increase the risks of heavy metal pollution.</div></div>","PeriodicalId":54616,"journal":{"name":"Physics and Chemistry of the Earth","volume":"138 ","pages":"Article 103873"},"PeriodicalIF":3.0,"publicationDate":"2025-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143167870","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Non-lethal method for the assessment of bioavailable metals in aquatic ecosystems surrounding ASGM activity

IF 3 3区地球科学

Physics and Chemistry of the Earth Pub Date : 2025-01-16 DOI: 10.1016/j.pce.2025.103874

Donald T.A. Tapfuma , Desmond Mwembe , Yogeshkumar Naik

{"title":"Non-lethal method for the assessment of bioavailable metals in aquatic ecosystems surrounding ASGM activity","authors":"Donald T.A. Tapfuma , Desmond Mwembe , Yogeshkumar Naik","doi":"10.1016/j.pce.2025.103874","DOIUrl":"10.1016/j.pce.2025.103874","url":null,"abstract":"<div><div>The need for refined non-lethal techniques for the monitoring of the bioavailability and accumulation of toxic metals in aquatic ecosystems in Artisanal small-scale gold mining sites has motivated the current study. The respective fin clips and white muscle of 13 fish species from selected ASGM hotspots in the Upper uMzingwane catchment area were collected and analysed using an Inductively Coupled Plasma Mass Spectrophotometer for xenobiotics (As, Cd, Hg, Pb) and trace metals (Cr, Cu, Li, Ni) often associated with this highly unregulated, illicit trade. The oxidation of sulphide ore bodies ingrained in greenstone-hosted quartz-carbonate veins endemic in gold panning hotspots in the study area has been known to result in the leaching of xenobiotics into water bodies with their subsequent accumulation in aquatic biota. A comparison of the levels of the xenobiotics in the respective fin clips and white muscle of the fish species under study, together with an assessment of the levels in their respective aquatic environments may give a clue as to the bioavailability and mobility of the metals. Notably, As, Cd and Cr concentration in sediment samples ranged from 533.88 to 16185.03 ppb; 35.5–36.4 ppb; and 37173.36–273651.69 ppb respectively. Rock cutlets; <em>Chiloglanis paratus</em> and <em>Chiloglanis pretoriae</em> were the greatest metal accumulators. Of note was the mercury concentrations in <em>Chiloglanis pretoriae</em> and <em>Chiloglanis paratus</em> fin clips ranged from, 0.17–0.35 mg/kg and 0.23–13.35 mg/kg respectively. Chromium concentration in <em>Chiloglanis pretoriae</em> and <em>Chiloglanis paratus</em> in fin clips ranged from 43.15 to 57.87 mg/kg and 44.87–244.86 mg/kg respectively. The study concludes that fin clips can, indeed, be used as a non-lethal means to assess the bioavailability of metal species in an aquatic ecosystem.</div></div>","PeriodicalId":54616,"journal":{"name":"Physics and Chemistry of the Earth","volume":"138 ","pages":"Article 103874"},"PeriodicalIF":3.0,"publicationDate":"2025-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143167877","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Circular economy drivers, opportunities, and barriers, for wastewater services within low- and medium-income countries

IF 3 3区地球科学

Physics and Chemistry of the Earth Pub Date : 2025-01-11 DOI: 10.1016/j.pce.2025.103871

Isaac Nyambiya , Lazarus Chapungu , Lawrence Sawunyama , Eustina V. Musvoto , Luxon Nhamo , John N. Zvimba

{"title":"Circular economy drivers, opportunities, and barriers, for wastewater services within low- and medium-income countries","authors":"Isaac Nyambiya , Lazarus Chapungu , Lawrence Sawunyama , Eustina V. Musvoto , Luxon Nhamo , John N. Zvimba","doi":"10.1016/j.pce.2025.103871","DOIUrl":"10.1016/j.pce.2025.103871","url":null,"abstract":"<div><div>The Circular Economy (CE) emerges as an alternative to the long-standing linear economy. While beneficial, the linear model has fallen short in addressing current cross-sectoral challenges. This study identifies the drivers, opportunities, and barriers for transitioning to a circular economy within the wastewater services sector in low-to medium-income countries (LMICs). Utilizing case studies from LMICs, the study provides pathways to transition from the current linear model to the circular economy within the wastewater services sector in LMICs. Key barriers identified include financial constraints, uncertainty among stakeholders, weak governance structures, and limited public awareness leading to health concerns and marketability issues. Drivers for circularity include recognizing wastewater as a valuable resource for revenue generation, leveraging smart technologies, and ensuring sustainability compliance. Opportunities include improving sector governance, enhancing water security, and promoting human and environmental health through demand management, resource diversification, and nutrient recovery. The study advocates for proactive management, effective partnerships, and sustainable business practices to accelerate the transition to a circular economy, emphasizing the need for prioritized resources in awareness, training, and innovative infrastructure development.</div></div>","PeriodicalId":54616,"journal":{"name":"Physics and Chemistry of the Earth","volume":"138 ","pages":"Article 103871"},"PeriodicalIF":3.0,"publicationDate":"2025-01-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143279798","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Understanding the mechanism of shallow crustal fluid-rock interaction in the Deccan Trap basement rocks and its significance in the Koyna-Warna Seismogenic region, Western India

IF 3 3区地球科学

Physics and Chemistry of the Earth Pub Date : 2025-01-11 DOI: 10.1016/j.pce.2025.103870

Piyal Halder , Matsyendra Kumar Shukla , Kamlesh Kumar , Anupam Sharma

{"title":"Understanding the mechanism of shallow crustal fluid-rock interaction in the Deccan Trap basement rocks and its significance in the Koyna-Warna Seismogenic region, Western India","authors":"Piyal Halder , Matsyendra Kumar Shukla , Kamlesh Kumar , Anupam Sharma","doi":"10.1016/j.pce.2025.103870","DOIUrl":"10.1016/j.pce.2025.103870","url":null,"abstract":"<div><div>The present study investigates the fluid's interaction with the severely fractured granitoids basement rocks underlying the Deccan Volcanic Province in Western India and its potential contribution to the recurring seismicity in the Koyna-Warna Seismogenic Region, a hotspot of artificial reservoir-triggered-seismicity. The presence of chlorite, epidote, calcite and illite, along the pre-existing faults and fractures, has been identified by the detailed petrologic investigation at mesoscopic and microscopic scales along with X-ray diffraction. This indicates the fluid-rock interaction along these mechanically weak planes and the subsequent propylitic grade of hydrothermal alteration. The microscopic appearance of biotitic remnants within neoformed chlorite indicates the transformation of biotite into chlorite and epidote due to fluid interaction which is further supported by the mass balance calculations. Additionally, the geochemistry also shows that K<sub>2</sub>O released during biotite dissolution explains the formation of illite at a particular depth, whereas plagioclase dissolution justifies the production of albite and partially calcite. Furthermore, chlorite, when formed in such highly stressed fault zones, shows ripplocations like intracrystalline deformation in response to the differential behaviour of the hydrogen bonds connecting the talc-like T-O-T layer with the brucite-like sheet and thus accommodates strain that promotes fault creep. Although epidote found here should favour the fault slip, the relatively higher abundance of chlorite suppresses this contrasting impact of epidote. Thus, biotite chloritization due to fluid-rock interaction along faults and fractures facilitates steady fault creep which may be one of the plausible explanations for recurring seismicity in the study area for the last 50 years.</div></div>","PeriodicalId":54616,"journal":{"name":"Physics and Chemistry of the Earth","volume":"138 ","pages":"Article 103870"},"PeriodicalIF":3.0,"publicationDate":"2025-01-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143167875","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Integrating river discharge and Sentinel-2 satellite imagery for enhanced turbidity mapping in arid region rivers: A machine learning approach

IF 3 3区地球科学

Physics and Chemistry of the Earth Pub Date : 2025-01-10 DOI: 10.1016/j.pce.2025.103869

Milad Ahmadi , Ashkan Noori , Seyed Hossein Mohajeri , Mohammad Reza Nikoo

{"title":"Integrating river discharge and Sentinel-2 satellite imagery for enhanced turbidity mapping in arid region rivers: A machine learning approach","authors":"Milad Ahmadi , Ashkan Noori , Seyed Hossein Mohajeri , Mohammad Reza Nikoo","doi":"10.1016/j.pce.2025.103869","DOIUrl":"10.1016/j.pce.2025.103869","url":null,"abstract":"<div><div>This study pioneers a novel mapping application, addressing the state of water quality assessment along Iran's Karun River in order to advance this field. The current work utilizes a state of the art machine learning method that seamlessly combines the inversion of multi-temporal satellite imagery with river discharge data. Focusing on the crucial water resources of arid regions, four machine learning models were developed and compared: These are K-Nearest Neighbors, Random Forest, Gradient Boosting and Multi-Layer Perceptron. The research introduces two key models: (I) R<sub>rs</sub>(Tur), which refers to remote sensing reflectance based retrieved turbidity maps, and the more advanced, (II) R<sub>rs</sub>&Q(Tur), which denote incorporating both remote sensing and river discharge data. The results show that the R<sub>rs</sub> & Q(Tur) model significantly outperforms its counterpart in Root Mean Square Error (≃15% Reduction) and Bias Errors (≃13%). By integrating hydrological and remote sensing data, this study demonstrates how to help environmental monitoring, especially in assessing water quality in arid regions through machine learning approaches.</div></div>","PeriodicalId":54616,"journal":{"name":"Physics and Chemistry of the Earth","volume":"138 ","pages":"Article 103869"},"PeriodicalIF":3.0,"publicationDate":"2025-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143167878","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Enhancing elevated temperature performance of alkali activated slag-dolomite concrete with Fly ash

IF 3 3区地球科学

Physics and Chemistry of the Earth Pub Date : 2025-01-10 DOI: 10.1016/j.pce.2025.103857

Arjun Raj P K, Ravi Joshi, Sarath D, Praveen Nagarajan, Blessen Skariah Thomas

{"title":"Enhancing elevated temperature performance of alkali activated slag-dolomite concrete with Fly ash","authors":"Arjun Raj P K, Ravi Joshi, Sarath D, Praveen Nagarajan, Blessen Skariah Thomas","doi":"10.1016/j.pce.2025.103857","DOIUrl":"10.1016/j.pce.2025.103857","url":null,"abstract":"<div><div>Cement production is a significant contributor to the emission of CO<sub>2</sub> and the resulting planetary heating, thus necessitating the utilization of alternative materials. The superior durability and strength of geopolymer concrete have led to its use as an equivalent material to cement concrete. Fewer research has been conducted on the traits of geopolymer concrete at exacerbating temperatures. Therefore, what this study aims to do is thoroughly examine how geopolymer concrete behaves during extreme temperatures. Principal focus of this work is the investigation of GGBS-dolomite geopolymer concrete (GGD-GPC) at high temperature composed of dolomite, a byproduct of rock crushing plants, and GGBS, waste from the steel industry. Research now underway indicates that the resistance to high temperatures of this new geopolymer concrete is lower than that of concrete. To eliminate the problem, fly ash was added to the combination in different proportions since its incorporation in GPC results in sulphoaluminate gel, which is resistant to high temperatures. After being heated to 500 °C, each mixture is allowed to cool naturally and its compressive strength is assessed. Through this study, it is inferred that the mix of optimum temperature resistance consists of GGBS, fly ash and Dolomite in the ratio of 50:40:10 (GFD-GPC). To compare and check the high-temperature performance of these two geopolymer variants, these are subjected to temperatures 26, 100, 300, 500 and 700 °C and mass loss, strength in compression, dynamic modulus of elasticity (DME) and ultrasonic pulse velocity (UPV) are tested.</div></div>","PeriodicalId":54616,"journal":{"name":"Physics and Chemistry of the Earth","volume":"138 ","pages":"Article 103857"},"PeriodicalIF":3.0,"publicationDate":"2025-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143167874","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Unlocking water management optimization: A data-driven exploration through bibliometric analysis

IF 3 3区地球科学

Physics and Chemistry of the Earth Pub Date : 2025-01-09 DOI: 10.1016/j.pce.2025.103862

Tiago Silveira Gontijo , Gustavo de Souza Groppo , İhsan Erdem Kayral , Alexandre de Cássio Rodrigues

{"title":"Unlocking water management optimization: A data-driven exploration through bibliometric analysis","authors":"Tiago Silveira Gontijo , Gustavo de Souza Groppo , İhsan Erdem Kayral , Alexandre de Cássio Rodrigues","doi":"10.1016/j.pce.2025.103862","DOIUrl":"10.1016/j.pce.2025.103862","url":null,"abstract":"<div><div>The utilization of optimization models is crucial for the effective management of water resources. These models serve as key tools for promoting sustainable water distribution and conservation. Despite advancements in water management, gaps persist in comprehensively addressing core themes, evolutionary trends, and future research directions. This article aims to bridge this gap by providing a detailed examination of the application of bibliometric tools in the optimization of the water management context. The methodology employed in this study involved data science and text mining procedures. There was exponential growth in publications on the proposed topic, especially after the publication of the Sustainable Development Goals in 2015. The universities that published the most on the subject were The University of Tehran and Wuhan University, and the countries that had the most corresponding authors were China and Iran. During 2013 to 2019, keywords like “irrigation” and “multireservoir systems” were widely utilized in articles. However, particularly after 2019, which also encompasses the global pandemic period, terms such as “rainfall” and “runoff emerged as trending topics. Finally, future research should explore the integration of bibliometric analyses with empirical data and stakeholder perspectives.</div></div>","PeriodicalId":54616,"journal":{"name":"Physics and Chemistry of the Earth","volume":"138 ","pages":"Article 103862"},"PeriodicalIF":3.0,"publicationDate":"2025-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143167857","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Spatial distribution of hazard index via heavy metals consumption in water from the himalayan lacustrine ecosystems

IF 3 3区地球科学

Physics and Chemistry of the Earth Pub Date : 2025-01-09 DOI: 10.1016/j.pce.2025.103858

Said Muhammad , Tauseef Ahmed , Sehrish Amin , Cem Tokatli , Fikret Ustaoğlu , Ashfaq Ahmad , Wajid Ali , Umar Farooq

{"title":"Spatial distribution of hazard index via heavy metals consumption in water from the himalayan lacustrine ecosystems","authors":"Said Muhammad , Tauseef Ahmed , Sehrish Amin , Cem Tokatli , Fikret Ustaoğlu , Ashfaq Ahmad , Wajid Ali , Umar Farooq","doi":"10.1016/j.pce.2025.103858","DOIUrl":"10.1016/j.pce.2025.103858","url":null,"abstract":"<div><div>The Himalayan lacustrine ecosystems (HLEs) provide ecological services and regulate water flow in streams and rivers of various South Asian countries. The study examined HLEs for drinking and various associated risk evaluation indices and their spatial distribution. For this purpose, forty-two water samples were picked from five HLEs of Kaghan Valley, Pakistan and analyzed for the physicochemical parameters, including heavy metals. Results revealed that the water parameters studied in HLEs were within the WHO drinking guidelines. Water quality was evaluated for the heavy metals evaluation index (HEI) and chronic risks. Based on HEI values, the HLEs were classified into low to medium levels of contamination. Among heavy metals, iron (Fe) showed the maximum average daily dose values of 11.7 ± 2.08 μg/kg-day via Paye Lake (PL) water consumption. This study noted higher hazard quotient (HQ) values of 0.37 ± 0.06 for cadmium (Cd) in children via Siri Lake (SL) water consumption. Hazard index (HI) values via intake of heavy metals in studied HLEs water were observed as less than the threshold of 1.0. Heavy metals concentrations in water showed positive and negative correlations. Cluster analyses grouped the samples into four classes based on their diverse nature of contribution.</div></div>","PeriodicalId":54616,"journal":{"name":"Physics and Chemistry of the Earth","volume":"138 ","pages":"Article 103858"},"PeriodicalIF":3.0,"publicationDate":"2025-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143167859","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Production and characterization of plastic bricks produced from PET, PP, and HDPE types of plastic wastes

IF 3 3区地球科学

Physics and Chemistry of the Earth Pub Date : 2025-01-09 DOI: 10.1016/j.pce.2025.103859

Molla Rahman Shaibur , Sabiha Sarwar , Mohammed Alshehri

{"title":"Production and characterization of plastic bricks produced from PET, PP, and HDPE types of plastic wastes","authors":"Molla Rahman Shaibur , Sabiha Sarwar , Mohammed Alshehri","doi":"10.1016/j.pce.2025.103859","DOIUrl":"10.1016/j.pce.2025.103859","url":null,"abstract":"<div><div>Plastic is a great problem in Bangladesh. This problem can be solved by producing eco-friendly plastic bricks (PBs) from the mixture of different percentages of plastic wastes (PWs) and Portland Cement (PLC). This research was conducted to manage the PWs by making PBs. The characteristics of the produced PBs were also determined. Three types of PBs e.g. PET, PP, and HDPE were produced from respective PWs. Compressive strength (CS), densities, water absorption rates (WAR), and efflorescence were performed. Scanning Electron Microscope (SEM), and Fourier Transform Infrared Spectroscopy (FTIR) techniques were applied to characterize some properties. Up to certain levels, increasing percentages of the PWs in PBs increases the CS and reduces the WAR. A comparatively higher CS was found in the PBs, which contained 35–45% of PWs. The densities of the experimental bricks varied from 2.01 to 3.01 g cm<sup>−3</sup>. Pearson correlation was performed where it was needed.</div><div>The results of the SEM technique showed that the surface structure of the control sample showed some cavities and structure deformation. FTIR technique showed that secondary alcohol and medium aliphatic primary amine were present in the control sample. These were found in 1124 cm<sup>−1</sup> and 3400 cm<sup>−1</sup> spectrums. The common functional group e.g. medium aliphatic primary amine was found in all three samples, indicating N–H stretching was present in the 3400 cm<sup>−1</sup> spectrum. High CS in PBs revealed that the produced PBs were capable enough to be used in the construction sectors. This could avoid the excessive use of conventional bricks. Brick production could manage the PWs from the surrounding environment, which ultimately improves the physical quality of the environment.</div></div>","PeriodicalId":54616,"journal":{"name":"Physics and Chemistry of the Earth","volume":"138 ","pages":"Article 103859"},"PeriodicalIF":3.0,"publicationDate":"2025-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143167876","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Spatiotemporal variation of organic contaminants and their ecotoxicological risk in the Uluabat lake basin, Türkiye: A Ramsar living wetland

IF 3 3区地球科学

Physics and Chemistry of the Earth Pub Date : 2025-01-09 DOI: 10.1016/j.pce.2025.103851

Cem Tokatlı , Alper Uğurluoğlu , Said Muhammad

{"title":"Spatiotemporal variation of organic contaminants and their ecotoxicological risk in the Uluabat lake basin, Türkiye: A Ramsar living wetland","authors":"Cem Tokatlı , Alper Uğurluoğlu , Said Muhammad","doi":"10.1016/j.pce.2025.103851","DOIUrl":"10.1016/j.pce.2025.103851","url":null,"abstract":"<div><div>Lakes are more vulnerable to water contamination due to their stagnant and close nature. This study investigated spatiotemporal distributions of organic stressors in the Uluabat Lake Basin (ULB) water. The ULB include Uluabat Lake (UL) and Emet (ES), Orhaneli (OS), and Mustafakemalpaşa streams (MS). A total of 20 locations (17 fluvial and three lacustrine habitats) were defined, and water samples were collected in the wet and dry seasons of 2023–24 and measured for 14 limnological parameters. The DO values decreased approximately by 1.5 times and turbidity ten times, while COD and NH<sub>4</sub>–N values increased by approximately 1.5 times, SO<sub>4</sub> 2.5 times, and temperature, NO<sub>2</sub>–N, and PO<sub>4</sub>–P 3.5 times in the dry season. The ULB was evaluated for water quality index (WQI), organic pollution index (OPI), eutrophication index (EI), nutrient pollution index (NPI), hazard quotient (HQ), hazard index (HI), Pearson's correlation index (PCI), principal component analysis (PCA), cluster analysis (CA) and Geographic Information System (GIS) to show the comprehensive holistic quality characteristics for ecotoxicological, statistical and visual perspectives. Results revealed the contamination of the investigated habitats as follows: OS > UL > MS > ES. The health risk assessment was under the acceptable level (HI < 1) for the studied habitats. The PCA noted two influential factors (“agriculture factor\" and “sewage factor\"), and CA established three groups such as “relatively less contaminated zone\", “relatively moderate contaminated zone\" and “relatively more contaminated zone”.</div></div>","PeriodicalId":54616,"journal":{"name":"Physics and Chemistry of the Earth","volume":"138 ","pages":"Article 103851"},"PeriodicalIF":3.0,"publicationDate":"2025-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143167856","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0