Di Zhang, Keqing Liu, Chengcheng Feng, Xianmin Wang, Ayat J. S. Al-Azab, Han Lu, Haiyan Ma, Ying Tang, Li Xu, Takeshi Ohama, Fantao Kong
{"title":"Physiological and transcriptomic responses of Chlorella vulgaris to novel antibacterial nanoparticles of ethyl cyanoacrylate polymer","authors":"Di Zhang, Keqing Liu, Chengcheng Feng, Xianmin Wang, Ayat J. S. Al-Azab, Han Lu, Haiyan Ma, Ying Tang, Li Xu, Takeshi Ohama, Fantao Kong","doi":"10.1039/d4en00861h","DOIUrl":"https://doi.org/10.1039/d4en00861h","url":null,"abstract":"The ethyl cyanoacrylate nanoparticles (ECA-NPs) have recently been reported as promising novel antibacterial NPs capable of inhibiting the growth of several Gram-positive and Gram-negative bacteria. However, the effects of ECA-NPs on microalgae, which are primary producers in aquatic ecosystems, remain unknown. In this study, we examined the effects of ECA-NPs on the microalga Chlorella vulgaris (Chlorella) at both cellular and molecular levels. A high concentration of ECA-NPs (100 μg/mL) exhibited strong growth inhibitory effects on Chlorella. In the ECA-NPs-treated cells, transmission electron microscope (TEM) observations showed the prominent internalization of ECA-NPs in the periplasmic space and vacuoles. Moreover, notable morphological changes such as a thinner cell wall, stacked thylakoid structure, and plasmolysis were observed. ECA-NPs exposed Chlorella secreted more extracellular polymeric substances (EPS) and accumulated more storage lipids (mainly triacylglycerol, TAG) compared to the control. However, the contents of total fatty acids and starch were decreased, and photosynthetic activity was reduced. In addition, the content of intracellular reactive oxygen species (ROS) and the activities of antioxidant enzymes in ECA-NPs-treated cells were significantly higher than in the control. Transcriptomic analysis revealed the downregulation of genes that are involved in drug binding/catabolic process, chemical stimulus detection, and cell wall component catabolic process (chitin catabolism), while genes involved in photosynthetic membrane and plastid thylakoid were upregulated. These results indicated that the effects of ECA-NPs exposure are not limited to specific metabolic pathways, but rather influence metabolic pathways across the entire cell. This study also provided new insights into the potential toxic effects associated with cyanoacrylate NPs in phytoplankton.","PeriodicalId":73,"journal":{"name":"Environmental Science: Nano","volume":"24 1","pages":""},"PeriodicalIF":8.131,"publicationDate":"2025-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142992329","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Son Hong Nguyen, Ngoc Toan Vu, Hoang Van Nguyen, Binh Nguyen, Trung Thien Luong
{"title":"Biologically synthesized Fe0-based nanoparticles and their application trends as catalysts in the treatment of chlorinated organic compounds: a review","authors":"Son Hong Nguyen, Ngoc Toan Vu, Hoang Van Nguyen, Binh Nguyen, Trung Thien Luong","doi":"10.1039/d4en00843j","DOIUrl":"https://doi.org/10.1039/d4en00843j","url":null,"abstract":"This review explores the advancements and trends in biologically synthesized Fe⁰-based nanoparticles (NPs) and their applications as catalysts in treating chlorinated organic compounds. The persistent nature and bioaccumulative characteristics of chlorinated organic compounds enable their accumulation in water, soil, and the food chain, leading to significant environmental and human health issues. The widespread presence of these toxic substances underscores the urgent need for effective treatment and remediation strategies. Biologically synthesized Fe⁰-based NPs are recognized for their considerable surface area, potent reduction properties, and environmental compatibility. These attributes render them a promising approach for the remediation of chlorinated compounds. This review categorizes synthesis methods into key groups: microorganisms, plant extracts, biological waste, and industrial-agricultural by-products. Recent studies highlight the promising applications of bio-NPs in environmental remediation, emphasizing their potential for sustainable and efficient treatment solutions. This analysis thoroughly examines current trends in the application and enhancement of nanoparticle activity, delineating various challenges and future prospects comprehensively. It offers well-defined research directions with high practical relevance, aiming to contribute to advancing knowledge and guiding future research endeavors in the field.","PeriodicalId":73,"journal":{"name":"Environmental Science: Nano","volume":"57 1","pages":""},"PeriodicalIF":8.131,"publicationDate":"2025-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142990723","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Expansion Microscopy Revealed Specific Impacts of Nano Zinc Oxide on Early Organ Development in Fish","authors":"Mengyu WANG, Wen-Xiong Wang","doi":"10.1039/d4en01071j","DOIUrl":"https://doi.org/10.1039/d4en01071j","url":null,"abstract":"Nanomaterials exhibit significant advantages in biomedical applications. However, their potential risks to organisms cannot be overlooked, particularly during early development. Traditional methods for assessing organ-specific toxicity are limited by their difficulty in exploring differences between materials at the nanoscale resolution. The novel expansion microscopy technique (ExM) provides an effective solution for high-resolution nanoscale imaging, allowing biological samples to be expanded approximately 4.5 times in three-dimensional space. ExM enables the visualization of proteins and nucleic acid targets in cells and tissues using conventional optical microscopy, achieving nanoscale imaging. The widespread application of nano zinc oxide (nZnO) in the biomedical field has raised concerns regarding toxicity. This study systematically assesses the toxicological changes and sources of nZnO and Zn²⁺ in the visual, skeletal muscle, and digestive systems. Our results indicated that appropriate concentrations of nZnO supported the normal early development in the visual and skeletal muscle systems, while potentially leading to excessive toxicity in the digestive system. Conversely, the concentrations of nZnO suitable for the development of the digestive system may be inadequate for the needs of the visual and skeletal muscle systems. This discrepancy may arise from differences in the solubility and bioaccessibility of nZnO in gastrointestinal fluids. Further RNA sequencing revealed differences in the sensitivity of various organs to nanomaterial exposure, highlighting the necessity of implementing comprehensive risk assessment strategies in toxicology. Overall, we visualized and quantified the subtle developmental toxicities of nZnO and Zn²⁺ across different organs for the first time. The application of expansion microscopy technique offered a novel perspective for evaluating the toxicity of nanomaterials.","PeriodicalId":73,"journal":{"name":"Environmental Science: Nano","volume":"79 1","pages":""},"PeriodicalIF":8.131,"publicationDate":"2025-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142990726","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Florian Lapp, Felix Brück, Jürgen Göske, Reiner Dohrmann, Tim Mansfeldt, Harald Weigand
{"title":"Fresh and Aged Chromite Ore Processing Residues (COPR): Weathering-Induced Alteration of Chemical Properties, Cr(VI) Mobility and Mineralogy At Open Dumpsites in Kanpur, India","authors":"Florian Lapp, Felix Brück, Jürgen Göske, Reiner Dohrmann, Tim Mansfeldt, Harald Weigand","doi":"10.1007/s11270-024-07726-w","DOIUrl":"10.1007/s11270-024-07726-w","url":null,"abstract":"<div><p>Chromite ore processing residue (COPR) is a hazardous waste retaining relic Cr(VI). Large amounts are generated during the high-lime production of leather tanning salts in the region of Kanpur, India. Here, COPR is often deposited on open and uncontrolled landfills, leading to severe groundwater contamination. This study aimed at elucidating how ageing under these ambient conditions alters COPR properties and Cr(VI) mobility. For this, aged COPR obtained from surface and subsurface horizons of a visibly weathered open dumpsite was systematically compared to fresh high-lime COPR collected at two tanning salt factories. Elemental composition of the samples was characterized using X-ray fluorescence analysis while Cr(VI) mobility was assessed photometrically in alkaline and aqueous batch extracts. Mineralogical composition of the COPR was studied using X-ray powder diffractometry, scanning electron microscopy and thermogravimetry–mass spectrometry. The fresh COPR were highly alkaline and contained characteristic Cr(VI) host phases like calcium aluminum chromate hydroxide (CAC) and katoite. These were absent in the aged samples due to their lower pH of ~ 9. The pH drop was likely caused by uptake of atmospheric CO<sub>2</sub>, which was corroborated by elevated carbon and calcite levels. This carbonation coincided with vertical translocation of Cr(VI) to the subsurface of the landfill, where leachate concentrations in excess of 1.6 g · L<sup>−1</sup> and chromatite (CaCrO<sub>4</sub>) precipitations were found. The results highlight the importance of carbonation as a key ageing process which will likely exacerbate Cr(VI) groundwater contamination at open COPR dumpsites.</p><h3>Graphical Abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":808,"journal":{"name":"Water, Air, & Soil Pollution","volume":"236 2","pages":""},"PeriodicalIF":3.8,"publicationDate":"2025-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s11270-024-07726-w.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142995376","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Rodrigo Roucourt Cezário, Vinicius Marques Lopez, Felipe Datto-Liberato, Seth M. Bybee, Stanislav Gorb, Rhainer Guillermo-Ferreira
{"title":"Polarized vision in the eyes of the most effective predators: dragonflies and damselflies (Odonata)","authors":"Rodrigo Roucourt Cezário, Vinicius Marques Lopez, Felipe Datto-Liberato, Seth M. Bybee, Stanislav Gorb, Rhainer Guillermo-Ferreira","doi":"10.1007/s00114-025-01959-3","DOIUrl":"10.1007/s00114-025-01959-3","url":null,"abstract":"<div><p>Polarization is a property of light that describes the oscillation of the electric field vector. Polarized light can be detected by many invertebrate animals, and this visual channel is widely used in nature. Insects rely on light polarization for various purposes, such as water detection, improving contrast, breaking camouflage, navigation, and signaling during mating. Dragonflies and damselflies (Odonata) are highly visual insects with polarization sensitivity for water detection and likely also navigation. Thus, odonates can serve as ideal models for investigating the ecology and evolution of polarized light perception. We provide an overview of the current state of knowledge concerning polarized light sensitivity in these insects. Specifically, we review recent findings related to the ecological, morphological, and physiological causes that enable these insects to perceive polarized light and discuss the optical properties responsible for the reflection of polarized light by their bodies and wings. Finally, we identify gaps in the current research and suggest future directions that can help to further advance our knowledge of polarization sensitivity in odonates.</p></div>","PeriodicalId":794,"journal":{"name":"The Science of Nature","volume":"112 1","pages":""},"PeriodicalIF":2.1,"publicationDate":"2025-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s00114-025-01959-3.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142995534","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Designing Safer Nanohybrids: Stability and Ecotoxicological Assessment of Graphene Oxide-Gold Nanoparticles Hybrids in Embryonic Zebrafish","authors":"Bashiru Ibrahim, Taiwo Hassan Akere, Pankti Dhumal, Eugenia Valsami-Jones, Swaroop Chakraborty","doi":"10.1039/d4en01173b","DOIUrl":"https://doi.org/10.1039/d4en01173b","url":null,"abstract":"Graphene oxide (GO) and graphene oxide-gold (GO-Au) nanohybrids offer promising applications in nanomedicine, biosensing, and environmental technology due to their unique properties. However, concerns regarding their environmental and biological safety remain largely unexplored. This study, using a Safe and Sustainable by Design (SSbD) approach, evaluates the cytotoxicity, oxidative stress, and dispersion stability of GO and GO-Au nanohybrids in zebrafish ZF4 cells. GO was synthesised using a modified Hummer’s method and GO-Au nanohybrids were prepared by incorporating gold nanoparticles (AuNPs) into the GO matrix. Physicochemical characterisation revealed enhanced dispersion stability of GO-Au nanohybrids, retaining over 98% of their initial absorbance in ultrapure water (UPW) and over 95% in DMEM/F12 after 48 hours. In contrast, GO displayed higher levels of sedimentation. Toxicity assessments indicated a dose- and time-dependent decrease in cell viability. After 72 hours, ZF4 cell viability was reduced to 39.5% at 150 µg/mL of GO, whereas GO-Au treatment at the same concentration exhibited a less severe reduction (54.5% viability). Reactive oxygen species (ROS) generation was significantly higher in GO-treated cells compared to GO-Au, with GO generating approximately 2x more ROS at concentrations of 50 µg/mL and 100 µg/mL. Apoptosis and necrosis rates were also significantly elevated in GO-treated cells, with necrosis reaching 53.1% at 100 µg/mL, compared to 14.6% in GO-Au-treated cells. The findings demonstrate that the incorporation of AuNPs reduce cytotoxicity and oxidative stress by enhancing the colloidal stability of GO-Au nanohybrids. This study provides critical baseline data on the interaction of GO-based nanomaterials (NMs) with biological systems and highlights the importance of NMs modification for safer, more sustainable applications.","PeriodicalId":73,"journal":{"name":"Environmental Science: Nano","volume":"33 1","pages":""},"PeriodicalIF":8.131,"publicationDate":"2025-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142992328","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ali Ansari, Afsana Munni, Dianne Carrillo, Matthew Pedersen, Rafiqul Islam, Francois Perreault
{"title":"Coating of complex metallic surfaces with passivated silver nanoparticles for long-term biofilm control","authors":"Ali Ansari, Afsana Munni, Dianne Carrillo, Matthew Pedersen, Rafiqul Islam, Francois Perreault","doi":"10.1039/d4en00797b","DOIUrl":"https://doi.org/10.1039/d4en00797b","url":null,"abstract":"Deep space missions will bring new challenges, beyond our experience so far with International Space Station, to life support systems including water supply. The complexity of these missions might leave spacecrafts and facilities uncrewed for several months. In this situation, biofilm growth can deteriorate the quality of stored water and cause water supply system failure during reinitiation, threating the mission success. Antimicrobial coatings have been used for biofilm mitigation in various conditions. A successful coating to control biofilm formation in deep space mission, among other things, must have long lifetime considering the duration of such missions. In this study, a solution was provided to the biggest drawback of silver nanoparticles as antimicrobial coating; short lifetime. Passivating with sulfide was tested to control silver ion release from silver nanoparticles, hence, prolonging antimicrobial activity. Stainless steel bellow pieces, as the most prone parts to biofilm growth, was chosen as the substrate. The pieces were coated with silver and passivated silver with different passivation degree to find the optimum condition. The substrates were exposed to Pseudomonas aeruginosa in M9 medium for 12 months for biofilm formation. The bacteria count on the bellow pieces as a representative of biofilm as well as bacteria count and silver ion concentration in M9 medium were measured at 1.5, 3, 6, and 12-month timepoints. Passivation slowed down silver ion release rate from silver nanoparticles, however, biofilm mitigation at the end of the experiment for one passivated coating was the same as silver coating, which means the passivated coating can last longer by releasing less antimicrobial agent, silver ions. Besides performance in biofilm mitigation, we demonstrated that the bellows can be coated homogeneously in a continuous reactor and passivation can enhance the stability of the coating to mechanical stress during expansion/retraction of the bellow, paving the way for application of passivated silver coating for space missions.","PeriodicalId":73,"journal":{"name":"Environmental Science: Nano","volume":"102 1","pages":""},"PeriodicalIF":8.131,"publicationDate":"2025-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142991015","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Fingerprint resemblance amongst siblings and non-siblings — Forensic and anthropological implications","authors":"Akansha Rana, Damini Siwan, Rakesh Meena, Ritika Verma, Kewal Krishan","doi":"10.1007/s00114-025-01961-9","DOIUrl":"10.1007/s00114-025-01961-9","url":null,"abstract":"<div><p>Fingerprints hold a crucial position in forensic science, primarily for identification purposes, with thumbprints emerging as the most frequently recovered evidence at crime scenes. The main purpose of the present study was to conduct a comparative analysis of thumbprints of siblings and non-sibling pairs to investigate resemblance and similarities in fingerprint patterns. Thumbprints of 144 individuals (72 siblings and 72 non-siblings) from 36 families were obtained. Jaccard Similarity Index was employed to analyse the similarity between the fingerprint patterns of siblings and non-siblings. The strength of association between the variables is evaluated by chi-square and Cramer’s V tests. The results indicated a significant similarity (69.44%) in thumbprint patterns among sibling pairs, demonstrating congruence in their right thumbprints, while non-sibling pairs exhibited a mere 30.56% similarity in the right thumbprints. Statistical analyses revealed a significant association (<i>p</i> = 0.0002) between sibling pairs, indicating a strong correlation in right-hand thumbprint patterns. The study bears substantial implications across various fields, including anthropology, population genetics, medical genetics and forensic science. Moreover, it may facilitate the examination of population similarities and variations and may aid in enhancing forensic investigations by identifying familial resemblance and similarity.</p></div>","PeriodicalId":794,"journal":{"name":"The Science of Nature","volume":"112 1","pages":""},"PeriodicalIF":2.1,"publicationDate":"2025-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142995535","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Life in the dead shell: utilization of dead Pinna shells by the blenny fish Petroscirtes variabilis Cantor, 1849 (Blennidae)","authors":"Sanjeevi Prakash, Amit Kumar","doi":"10.1007/s00114-025-01960-w","DOIUrl":"10.1007/s00114-025-01960-w","url":null,"abstract":"<div><p>The seagrass ecosystem supports a diverse range of marine life, including fish, crabs, and seahorses. It plays a vital role in providing essential services such as habitat creation, nutrient cycling, and shoreline stabilization. In the present study, we conducted line intercept transects to assess the abundance of <i>Pinna</i> shells in seagrass meadows of the Sangumal region in the Palk Bay, India. Among the 30 transects surveyed, we observed a total of 33 <i>Pinna</i> shells. Ten shells were found to be empty, while 6 hosted blenny fish. The fish were identified as saber-tooth blenny <i>Petroscirtes variabilis</i> Cantor, 1849, via integrative taxonomy (morphology + cytochrome oxidase subunit I gene phylogeny). The phylogenetic tree based on the maximum likelihood inference method indicated that <i>P. variabilis</i> clustered together with other sequences of <i>P. variabilis</i> available in the NCBI GenBank. We also revealed the importance of empty <i>Pinna</i> shells acting as refugia for blenny fish, which was evident from the presence of eggs attached to the shells.</p></div>","PeriodicalId":794,"journal":{"name":"The Science of Nature","volume":"112 1","pages":""},"PeriodicalIF":2.1,"publicationDate":"2025-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142995536","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Sadaf Tagar, Naveed Ahmed Qambrani, Zubair Ahmed, Kamran Ansari, Rasool Bux Mahar, Muhammad Muqeet, Syed Muhammad Zaki Zaidi
{"title":"Surface Water Analysis for Physical Parameters, Fecal Indicator Bacteria, and Identification of the Origin of Contamination","authors":"Sadaf Tagar, Naveed Ahmed Qambrani, Zubair Ahmed, Kamran Ansari, Rasool Bux Mahar, Muhammad Muqeet, Syed Muhammad Zaki Zaidi","doi":"10.1007/s11270-024-07712-2","DOIUrl":"10.1007/s11270-024-07712-2","url":null,"abstract":"<div><p>The prevalence of fecal indicator bacteria in relation to physical parameters were observed twice a year in selected points of the Indus River. Eight representative sampling locations were selected, and samples were collected twice a year, i.e., in the dry and wet seasons, for a total of 16 samples. The fecal coliform (FC) to fecal <i>streptococci</i> (FS) ratio was used to identify the source of fecal contamination. Results showed severe fecal contamination levels exceeding the allowable limits of WHO and Pak-EPA. Except for pH and TDS, the physical parameters were also not found within allowable limits at various sampling locations. The comparison of dry and wet seasons reveals higher microbial loads in the wet season. The FC/FS ratio linked polluted waters to human sources (37.5%), animal sources (25%), mixed pollution with the dominance of human pollution (25%), and mixed pollution with the dominance of domestic pollution (12.5%) in dry and human sources (25%), animal sources (25%), mixed pollution with the dominance of human pollution (37.5%) and mixed pollution with the dominance of domestic pollution (12.5%) in wet season. Pearson’s correlation test showed a strong positive correlation (r = 0.71 to 0.99) between TDS and salinity in both dry and wet seasons, and a moderately strong correlation (r = 0.41 to 0.70) between various microbial and physical parameters. It is strongly advised that careless municipal wastewater disposal into rivers be prohibited. To prevent contaminated water from mixing with river water, an appropriate sewage and drainage system should be implemented.</p></div>","PeriodicalId":808,"journal":{"name":"Water, Air, & Soil Pollution","volume":"236 2","pages":""},"PeriodicalIF":3.8,"publicationDate":"2025-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142995323","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}