{"title":"Sources, distribution, and impacts of emerging contaminants – a critical review on contamination of landfill leachate","authors":"Rupanjana Das, Deep Raj","doi":"10.1016/j.hazadv.2025.100602","DOIUrl":"10.1016/j.hazadv.2025.100602","url":null,"abstract":"<div><div>A broad range of artificial or naturally occurring chemicals known as emerging contaminants (ECs) are increasingly found in landfill leachate and provide serious dangers to human health and the environment. This critical analysis investigates the origin, dispersion, and effects of ECs in relation to landfill settings. Landfills serve as EC reservoirs because of the diverse mix of e-waste, industrial compounds, pharmaceuticals, personal care items, and endocrine-disrupting chemicals. Factors including landfill design, waste type, and environmental conditions affect the mobility and permanence of these toxins as they seep into nearby soils, groundwater, and surface water through leachate. ECs have been found in trace amounts in the landfill leachate, and are polar substances having a brief half-life. Concerns over the consequences of newly discovered contaminants on the environment and human health have grown because of their increased detection in the landfill leachate. Additionally, they increase the hazards to human populations by having the ability to pollute agricultural soils and sources of drinking water. The significant finding is that the ECs in landfill leachate can be generated from various sites whether it is from municipal solid wastes, agricultural runoffs, or industrial wastes which become persistent in nature increasing risk to human health and environment. The study identifies important knowledge gaps regarding the development of harmful transformation products, the collective effects of EC combinations, and the inadequacy of traditional treatment techniques in reducing EC pollution. By this it can be concluded that advanced analytical methods, creative leachate treatment approaches, and strong regulatory frameworks are needed to address these issues and successfully stop EC discharge and control its negative effects on the environment and human health. In order to reduce the hazards caused by newly discovered pollutants in landfill leachate and to support environmentally friendly waste management techniques, this analysis emphasizes the necessity of both international and regional initiatives.</div></div>","PeriodicalId":73763,"journal":{"name":"Journal of hazardous materials advances","volume":"17 ","pages":"Article 100602"},"PeriodicalIF":5.4,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143176350","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Weiwei Wang , Songjun Guo , Bao Li , Dongyu Xu , Bo Gao
{"title":"Microplastics in Pearl River Estuary and Yangtze River Estuary, China: Occurrence, fragmentation and pollution risk","authors":"Weiwei Wang , Songjun Guo , Bao Li , Dongyu Xu , Bo Gao","doi":"10.1016/j.hazadv.2024.100529","DOIUrl":"10.1016/j.hazadv.2024.100529","url":null,"abstract":"<div><div>Estuaries have received widespread attention as important zones for transporting pollutants from rivers to the ocean. The distribution characteristics and risks of microplastics (MPs) pollution in estuaries require further investigation. This study analyzed the occurrence and risks of MPs in the surface waters of the Pearl River Estuary (PRE) and the Yangtze River Estuary (YRE) using identical analytical methods. MPs were more abundant in the YRE (2.80 × 10<sup>4</sup> ± 2.30 × 10<sup>4</sup> particles/m<sup>3</sup>) than in the PRE (3.10 × 10<sup>3</sup> ± 9.97 × 10<sup>2</sup> particles/m<sup>3</sup>). In the PRE, polypropylene (PP, 31.61 %), polyethylene terephthalate (PET, 13.55 %), and polyethylene (PE, 12.26 %) were the main components, unlike the YRE, which primarily contained PP (57.43 %) and PE (39.31 %). The most common shapes and sizes of MPs in both regions were fragments and small-sized MPs (SMPs, 10–300 μm), respectively. In addition, MP characteristics in each estuary influenced their diversity index differently: MP shapes in the YRE and polymer types in the PRE. Furthermore, MPs in the YRE showed higher fragmentation levels compared to those in the PRE, indicating that the downsizing of SMPs in the YRE might have reached a stable size distribution, as indicated by the conditional fragmentation model (CDF) and carbonyl index of PP and PE. Moreover, similar sources (soil, rainfall, and atmospheric deposition) in the estuary were identified using CDF fingerprinting. Although the risk of MP pollution in the surface water of both estuaries was classified as low, the pollution risk index for PRE (PRI<sub>PRE</sub>=14.8325) was higher than that for YRE (PRI<sub>YRE</sub>=6.0450). This difference is due to the varying abundance of highly toxic polymers in the two estuaries. Simultaneous comparative observations of MPs are beneficial for understanding the fate and environmental risks associated with MPs in different estuaries.</div></div>","PeriodicalId":73763,"journal":{"name":"Journal of hazardous materials advances","volume":"17 ","pages":"Article 100529"},"PeriodicalIF":5.4,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143176885","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Miguel Valdes , Drew W. Johnson , Jie Huang , Sarah Saslow , Jinhu Song
{"title":"Chemical grouts to reduce contaminant leaching from deep vadose zone sands","authors":"Miguel Valdes , Drew W. Johnson , Jie Huang , Sarah Saslow , Jinhu Song","doi":"10.1016/j.hazadv.2024.100556","DOIUrl":"10.1016/j.hazadv.2024.100556","url":null,"abstract":"<div><div>This research evaluates the effectiveness of epoxy and polyurethane resins used as grouts to mitigate iodide leaching from deep vadose zone sands. The research measured the rate of gas evolution during grout curing, foam expansion, and the effectiveness of each grout in trapping iodide within the sand matrix. Minimal iodide displacement during grouting is desired and the polyurethane grouts displaced <1 % of iodide due to moisture in the samples being consumed by reactions with methylene diphenyl diisocyanate, leaving little excess moisture and associated mobile iodide as the resins cured. Nearly half (45 %) of the iodide was displaced during the injection of epoxy grout when moisture was present. This was attributed to the immiscibility of water containing iodide with epoxy, which was displaced from the monoliths during grouting. Minimal porosities and diffusivities are desired after grouting and all polyurethane grouts had porosity values ranging from 16.59 % to 19.45 % and diffusivities between 1.84×10<sup>−8</sup> to 2.30×10<sup>−7</sup> cm²/<em>sec</em>. Catalyzed grouts generally showed lower porosity and diffusivity with higher ratios of added catalyst.</div></div>","PeriodicalId":73763,"journal":{"name":"Journal of hazardous materials advances","volume":"17 ","pages":"Article 100556"},"PeriodicalIF":5.4,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143176887","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Garima Bora , Bipul Phukan , Avinash Talukdar , Imtiaz Ahmed , Samar Jyoti Chutia , Rinku Gogoi , Jiten Sarma , Ayub Ali , Tushar Gowala , K.A. Martin Xavier
{"title":"Assessment and quantification of microplastic contamination in fishes with different food habits from Beel wetlands","authors":"Garima Bora , Bipul Phukan , Avinash Talukdar , Imtiaz Ahmed , Samar Jyoti Chutia , Rinku Gogoi , Jiten Sarma , Ayub Ali , Tushar Gowala , K.A. Martin Xavier","doi":"10.1016/j.hazadv.2025.100618","DOIUrl":"10.1016/j.hazadv.2025.100618","url":null,"abstract":"<div><div>In the present study, the occurrence of MPs in herbivore, omnivore and carnivore fishes has been evaluated from <em>beel</em>, a freshwater wetland. A total of 90 fishes were collected and MPs detected in all the samples. <em>Glossogobius giuris</em>, a carnivorous fish had the highest number of MP mean abundance of 5.50 ± 0.60 numbers per individual. Carnivorous fishes exhibited the highest number of average MP abundance compared to omnivorous and herbivorous fishes. Fibre-shaped MPs were most abundantly found. Smaller MPs in the size range of 100–500µm were dominant and transparent MPs followed by blue colored MPs were mostly found. The predominant polymer was polyethylene in the case of carnivores followed by omnivore while Nylon was mostly found in omnivores. A positive relationship was found between the trophic levels and MPs abundance which indicates that MPs may transfer along the food chain and accumulate in higher trophic levels.</div></div>","PeriodicalId":73763,"journal":{"name":"Journal of hazardous materials advances","volume":"17 ","pages":"Article 100618"},"PeriodicalIF":5.4,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143176569","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Assessing year-round microplastic loading in the lower Brahmaputra River: A threat to aquatic environment","authors":"Md. Anamul Hassan, Mashura Shammi, Shafi M. Tareq","doi":"10.1016/j.hazadv.2025.100592","DOIUrl":"10.1016/j.hazadv.2025.100592","url":null,"abstract":"<div><div>Rivers transport large quantities of microplastics (MPs) and suspended solids (SS) to the ocean. This study aimed to conduct a year-round analysis of MPs and total suspended solids (TSS) in the lower part of the Brahmaputra River in Bangladesh, estimate their outflow, and assess the resulting ecological risks. Fourier Transform Infrared Spectroscopy (FTIR) analysis identified nylon, polyethylene terephthalate, polypropylene, high-density polyethylene, and polystyrene polymers. The most common shape of MPs in the river water was fiber. Annually, 23.60 kg or 1.35 × 10<sup>4</sup> trillion MPs and 2.08 × 10<sup>8</sup> tons of SS outflows through this part of the river. Rainfall in the river basin is responsible for the high concentrations of MPs and TSS during the wet season. A species sensitivity distribution model based on toxicity data for freshwater species was used in this study to evaluate the ecological risks posed by MPs and SS. Risk assessment based on the risk quotient (RQ) suggests that MPs and SS pose potential risks to freshwater biota, particularly during the wet season. Overall, this study underscores the persistent presence of MPs throughout the year, highlighting the critical need for immediate and effective preventive measures to reduce MP pollution and protect freshwater biodiversity.</div></div>","PeriodicalId":73763,"journal":{"name":"Journal of hazardous materials advances","volume":"17 ","pages":"Article 100592"},"PeriodicalIF":5.4,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143177294","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Anagha Balaji , Ayyappa Bathinapatla , Manju Manuel , Ravi Kumar Mulpuri , Suvardhan Kanchi
{"title":"Recent developments in melamine detection: Applications of gold and silver nanostructures in colorimetric and fluorometric assays","authors":"Anagha Balaji , Ayyappa Bathinapatla , Manju Manuel , Ravi Kumar Mulpuri , Suvardhan Kanchi","doi":"10.1016/j.hazadv.2024.100553","DOIUrl":"10.1016/j.hazadv.2024.100553","url":null,"abstract":"<div><div>The purity of milk, traditionally regarded as a symbol of health and nourishment, has been undermined by the alarming issue of melamine (MLM) adulteration. This nitrogen-rich compound is illicitly introduced to falsely enhance protein content, posing significant health risks. Traditional detection methods are often labor-intensive, time-consuming, or require expensive equipment. In response, researchers have developed colorimetric detection techniques to efficiently screen milk for MLM contamination. These methods are particularly promising due to their ease of preparation, rapid detection, high sensitivity, and capability for naked-eye detection. Furthermore, the unique optical properties of advanced nanomaterials have facilitated fluorometric detection, wherein the presence of contaminants induces detectable changes in fluorescence intensity or wavelength. This study offers an in-depth review of recent advancements in colorimetric and fluorometric probes based on silver (Ag) and gold (Au) nanostructures, exploring their application in food analysis. It delves into the underlying sensing mechanisms of these probes, showcasing their efficacy in detecting food contaminants. Despite the numerous advantages of Ag and Au nanostructure-based probes, challenges remain, particularly in addressing the complexity of food matrices, achieving simultaneous detection of multiple analytes, and mitigating interference from testing conditions. Additionally, this review highlights the emergence of immunoassay-based sensors, noting that many commercially available MLM testing kits utilize ELISA and LFIA platforms. For the first time, a comprehensive list of MLM testing devices and assay kits is presented, accompanied by key findings from recent studies and recommendations for future research directions.</div></div>","PeriodicalId":73763,"journal":{"name":"Journal of hazardous materials advances","volume":"17 ","pages":"Article 100553"},"PeriodicalIF":5.4,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143177664","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Kechao Li , Tao Hu , Min Zhou , Mengting Wu , Qiusong Chen , Chongchong Qi
{"title":"A systematic evaluation of advanced machine learning models for nickel contamination management in soil using spectral data","authors":"Kechao Li , Tao Hu , Min Zhou , Mengting Wu , Qiusong Chen , Chongchong Qi","doi":"10.1016/j.hazadv.2024.100576","DOIUrl":"10.1016/j.hazadv.2024.100576","url":null,"abstract":"<div><div>Soil nickel (Ni) contamination attributes a crucial environmental concern because its adverse effects on people health and ecosystem. Numerous studies have estimated Ni concentrations in soil, however, previous studies face several limitations, such as limited sample size and restricted spatial coverage, which impede their practical application. In this study, comprehensive and reliable dataset was utilized and 12 machine learning models were trained to predict soil Ni contamination at large-scale. After hyperparameter tuning, the light gradient-boosting machine (LGBM) method showed the optimal performance with values for area under the curve, accuracy rate, precision rate, F1 score, and recall rate metrics of 0.8024, 0.8218, 0.6818, 0.7561, and 0.7183, respectively. Accordingly, the LGBM model was employed for feature importance analysis, with the top three most sensitive bands identified within the wavelength ranges of 2214–2215 nm, 2214.5–2215.5 nm, and 2215–2216 nm, with feature importance scores of 159, 147, and 119, respectively. The results validate the effectiveness of machine learning techniques in detecting Ni concentrations in soils, which can directly inform the regulation of soil Ni levels and contribute to the promotion of soil management, crop cultivation, and disease prevention.</div></div>","PeriodicalId":73763,"journal":{"name":"Journal of hazardous materials advances","volume":"17 ","pages":"Article 100576"},"PeriodicalIF":5.4,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143175902","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Kelsey O'Malley , Hannah Blair Hidle , Benjamin Parker Jones, Shenwei Liang, YuYe J. Tong, Dejun Chen
{"title":"A suspects screening workflow towards total per- and poly-fluoroalkyl substances in cosmetics with time-of-flight mass spectrometry","authors":"Kelsey O'Malley , Hannah Blair Hidle , Benjamin Parker Jones, Shenwei Liang, YuYe J. Tong, Dejun Chen","doi":"10.1016/j.hazadv.2024.100580","DOIUrl":"10.1016/j.hazadv.2024.100580","url":null,"abstract":"<div><div>In response to growing concerns over PFAS exposure from cosmetics, this study developed a level-5a (Suspect Screening Exact Mass Match) PFAS suspect screening protocol using liquid chromatography and time-of-flight high-resolution mass spectrometry to identify PFAS in 35 U.S.-market cosmetic products. A screening workflow developed by a Native PFAS Precision and Recovery Standards Solution, containing 30 typical PFAS, enabled maximum-likelihood suspect identification against a PFAS list of 3,882 compounds from National Institute of Standards and Technology with least false-negatives and false-positives. PFAS suspects were identified in 34 of 35 samples, with 13 samples containing over 10 unique PFAS suspects. Powder-based cosmetics exhibited more PFAS suspects than cream-based products. Targeted analysis with 30 PFAS standards via Triple Quadrupole LC-MS/MS confirmed 26 of the 218 identified suspects. These results underscore the feasibility of the total PFAS suspects in cosmetics and highlight the need for stricter regulation of fluorinated ingredients and further research on dermal PFAS exposure.</div></div>","PeriodicalId":73763,"journal":{"name":"Journal of hazardous materials advances","volume":"17 ","pages":"Article 100580"},"PeriodicalIF":5.4,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143175907","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Antiviral effects of copper and copper alloy and the underlying mechanisms in severe acute respiratory syndrome coronavirus 2","authors":"Ryuichi Nakano , Akiyo Nakano , Takeshi Sasahara , Yuki Suzuki , Yasuhiro Nojima , Hisakazu Yano","doi":"10.1016/j.hazadv.2025.100589","DOIUrl":"10.1016/j.hazadv.2025.100589","url":null,"abstract":"<div><div>Copper has antibacterial and antiviral properties and is effective against severe acute respiratory syndrome coronavirus 2; however, the detailed mechanism of virus inactivation remains unclear. Here, purified viruses were used to clarify the viral inactivation effect and to identify viral inactivation factors and damaged viral structures. When the virus is in contact with copper, the infectivity titer decreased by approximately 5-log<sub>10</sub> in 30 min; however, in contact with a copper alloy C22000 (90 % Cu, 10 % Zn) surface, it decreased by > 6-log<sub>10</sub> in only 10 min. To investigate its inactivation mechanism, RNA copy number of infectious viral particles was quantified using RNase treatment, oligo(dT)-based reverse transcriptase, and droplet digital polymerase chain reaction. Contact with copper and copper alloys causes fragmentation of the viral RNA over time; however, degradation is slow. The amount of spike protein on the viral membrane measured by enzyme-linked immunosorbent assay was only slightly reduced; however, C22000 was capable of degrading more than copper. The virus also reacted on the plates with chelators of copper ions and scavengers of reactive oxygen species as inhibitors of copper and copper alloy inactivating factors. The synergistic effects of copper ions, Cu(I) and Cu(II), and superoxide were found to be the significant inactivating factors of the virus. Furthermore, copper and copper alloy-coated textiles were prepared, and the inactivation efficacy was evaluated. Surprisingly, textiles coated with C21000 (Cu 95 %, Zn 5 %) showed the highest antiviral activity, decreasing by >6-log<sub>10</sub> to below the detection limit after only 2 min of contact.</div></div>","PeriodicalId":73763,"journal":{"name":"Journal of hazardous materials advances","volume":"17 ","pages":"Article 100589"},"PeriodicalIF":5.4,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143175913","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Callistus I. Iheme , Kenneth E. Asika , Reginald C. Olugbue , Valentine Okwaraejesu , Victor C. Eze , Uchechi K. Obasi , Raymond C. Ibeh , Arthur C. Morah , Elias E. Elemike , Nneamaka A. Chiegboka , Chinwe S. Alisi
{"title":"Environmental remediation of petroleum-hydrocarbon-contaminated Avu mechanic village soil using green-synthesized iron oxide nanoparticles: Advance remediation technology","authors":"Callistus I. Iheme , Kenneth E. Asika , Reginald C. Olugbue , Valentine Okwaraejesu , Victor C. Eze , Uchechi K. Obasi , Raymond C. Ibeh , Arthur C. Morah , Elias E. Elemike , Nneamaka A. Chiegboka , Chinwe S. Alisi","doi":"10.1016/j.hazadv.2024.100566","DOIUrl":"10.1016/j.hazadv.2024.100566","url":null,"abstract":"<div><div>In order to remediate soil contaminated with petroleum hydrocarbons, this study evaluated the potential of iron oxide nanoparticles (FeONPs), synthesized using an aqueous leaf extract of <em>Diodella sarmentosa (sw).</em> The FeONPs were characterized using a high resolution transmission electron microscope (TEM), ultraviolet-visible spectroscope (Uv-vis), Fourier transform infrared spectroscope (FTIR), X-ray diffraction (XRD), scanning electron microscope (SEM), and energy dispersive X-ray spectroscope (EDS). Soil samples (labeled A, B, and C) were collected from four different locations within Avu mechanic village, Nigeria, and then homogenized. The samples were assessed for petroleum hydrocarbon contents and the potential of FeONPs and the bulk FeCl<sub>3</sub>·6H<sub>2</sub>O to degrade them. Sample A was treated with FeONPs; sample B was treated with the bulk FeCl<sub>3</sub>·6H<sub>2</sub>O; and sample C, serving as the control, remained untreated. Using gas chromatography coupled to a flame ionization detector (GC-FID), results revealed the concentrations of polyaromatic hydrocarbons (PAHs) and total petroleum hydrocarbons (TPHs) in samples A, B, and C as 35.77 mg/kg and 218.43 mg/L, 500.876 mg/kg and 3838.86 mg/L, and 1163.30 mg/kg and 7358.87 mg/L, respectively. The efficacy of FeONPs in degrading these pollutants more than the bulk compound may have stemmed from their large surface area-to-volume ratio and redox cycling. In view of the higher adjusted R-square values of 49.40 % in PAH as against 34.70 % in TPH, it can be said that both agents (FeCl<sub>3</sub>·6H<sub>2</sub>O and FeONPs) were more effective in degrading PAH than TPH. On the basis of the findings, it can be concluded that the synthesized-FeONPs degraded the persistent PAH and TPH in the soil samples at an efficiency of 96.92 % and 97.03 %, respectively, when compared to both the bulk FeCl<sub>3</sub>·6H<sub>2</sub>O and the untreated control.</div></div>","PeriodicalId":73763,"journal":{"name":"Journal of hazardous materials advances","volume":"17 ","pages":"Article 100566"},"PeriodicalIF":5.4,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143176281","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}