Journal of hazardous materials advances最新文献

{"title":"A systematic evaluation of advanced machine learning models for nickel contamination management in soil using spectral data","authors":"Kechao Li ,&nbsp;Tao Hu ,&nbsp;Min Zhou ,&nbsp;Mengting Wu ,&nbsp;Qiusong Chen ,&nbsp;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}

{"title":"A suspects screening workflow towards total per- and poly-fluoroalkyl substances in cosmetics with time-of-flight mass spectrometry","authors":"Kelsey O'Malley ,&nbsp;Hannah Blair Hidle ,&nbsp;Benjamin Parker Jones,&nbsp;Shenwei Liang,&nbsp;YuYe J. Tong,&nbsp;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 ,&nbsp;Akiyo Nakano ,&nbsp;Takeshi Sasahara ,&nbsp;Yuki Suzuki ,&nbsp;Yasuhiro Nojima ,&nbsp;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-log₁₀ in 30 min; however, in contact with a copper alloy C22000 (90 % Cu, 10 % Zn) surface, it decreased by &gt; 6-log₁₀ 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 &gt;6-log₁₀ 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}

{"title":"Environmental remediation of petroleum-hydrocarbon-contaminated Avu mechanic village soil using green-synthesized iron oxide nanoparticles: Advance remediation technology","authors":"Callistus I. Iheme ,&nbsp;Kenneth E. Asika ,&nbsp;Reginald C. Olugbue ,&nbsp;Valentine Okwaraejesu ,&nbsp;Victor C. Eze ,&nbsp;Uchechi K. Obasi ,&nbsp;Raymond C. Ibeh ,&nbsp;Arthur C. Morah ,&nbsp;Elias E. Elemike ,&nbsp;Nneamaka A. Chiegboka ,&nbsp;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 FeCl₃·6H₂O to degrade them. Sample A was treated with FeONPs; sample B was treated with the bulk FeCl₃·6H₂O; 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 (FeCl₃·6H₂O 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 FeCl₃·6H₂O 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}

{"title":"Pollution and ecological risk assessment of heavy metals in anthropogenically-affected soils of Sudan: A systematic review and meta-analysis","authors":"Magboul M.S. Siddig ,&nbsp;Stephen B. Asabere ,&nbsp;Abdullah S. Al-Farraj ,&nbsp;Eric C. Brevik ,&nbsp;Daniela Sauer","doi":"10.1016/j.hazadv.2025.100601","DOIUrl":"10.1016/j.hazadv.2025.100601","url":null,"abstract":"<div><div>Soil is a sink for environmental hazardous materials including heavy metals (HMs). Developing countries face enormous environmental problems, including HMs in soils that reduce biodiversity and create serious human health risks. Thus, it is important to determine and track status of soil HM concentrations in different anthropogenic land uses (LUs) in such countries to support critical environmental management decisions. Due to the absence of soil HMs information for anthropogenically-affected soils across Sudan, this study conducted a systematic review and meta-analysis of 76 publications produced between 1996 and 2024 that reported on soil HM values in Sudan. Our work focused on 10 HMs (As, Cd, Co, Cr, Cu, Hg, Mn, Ni, Pb, and Zn) and 9 LUs (urban agricultural, industrial, roadside, tannery, waste dump, rural agricultural, coastal sediments, gold mining, and river sediments). The objective was to investigate HM levels and assess the potential ecological risks posed by soil HMs in the aforementioned LUs across the entire country. The averages for all HMs in all LUs combined exceeded their corresponding average common range (ACRs) in soils, with Cd, Cr, Cu, Hg, Ni, and Pb surpassing their WHO/FAO limits. The averages for Cd and Hg in urban agricultural were ≈158 and 340 times their ACRs and ≈3 and 10 times the WHO/FAO limits, respectively. The averages for Cd, Cu, Hg, and Pb (gold mining) were 122, 21, 407, and 24 times, for Pb (industrial) 89 times, and for Cr (tannery) 20 times higher than the ACRs. The average PI, CF, EF, and I_geo pollution indices indicated anthropogenic sources for all HMs except Mn in all LUs. The averages for single ecological risk (Er) for all HMs indicated low risks, whereas the potential ecological risk index (PERI) suggested considerable risk. The average PERI values were waste dump &gt; industrial &gt; gold mining &gt; rural agricultural &gt; river sediments &gt; urban agricultural &gt; roadside &gt; tannery &gt; coastal sediments. Industrial, gold mining and waste dump had extreme ecological risk values (PERI &gt;900), with Cd and Hg contributing &gt;70 % of the total PERI for waste dump and gold mining. Findings from this review and meta-analysis provide useful information on pollution levels and ecological risk posed by HMs on a national scale. We strongly recommend establishing national HM background concentrations for better understanding of HM pollution levels, taking into account the lithology and soil parent materials across the country. This can help guide future research priorities for soils in Sudan, specifically pollution control, management strategies and human health risk assessment.</div></div>","PeriodicalId":73763,"journal":{"name":"Journal of hazardous materials advances","volume":"17 ","pages":"Article 100601"},"PeriodicalIF":5.4,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143176346","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":"Mitigation of heavy metal soil contamination: A novel strategy with mycorrhizal fungi and biotransformed olive residue","authors":"María Higueras-Valdivia ,&nbsp;Gloria Andrea Silva-Castro ,&nbsp;Mario Paniagua-López ,&nbsp;Ana Romero-Freire ,&nbsp;Inmaculada García-Romera","doi":"10.1016/j.hazadv.2024.100570","DOIUrl":"10.1016/j.hazadv.2024.100570","url":null,"abstract":"<div><div>This study investigates a novel phytoremediation approach in, employing a synergistic treatment involving arbuscular mycorrhizal fungi (AMF) and biotransformed dry olive residue (DOR) to address heavy metal (HM) contamination in soils. The research focused on soil from the Guadiamar Green Corridor area (Aznalcóllar), characterized by bar soils with residual metal pollution (Co, As, Cr, Cd, Pb, Ni, Cu, and Zn). The findings highlight a significant improvement in soil physicochemical properties following the application of DOR, including a 3-unit increase in pH (from 4 to 7), an increase in CaCO₃ content from nearly 0 to 4, and a rise in organic matter content (from 0.92 % to 1.88 %). Additionally, the activity of all four enzymatic activities studied -dehydrogenase, β-glucosidase, phosphatase, and urease- was markedly enhanced, leading to improved biological properties. These changes led to a subsequent increase in vegetative response, as reflected in a 273 % rise in biomass, a 41 % increase in stomatal conductance, and a 47 % improvement in photosystem efficiency. Although mycorrhizal inoculation provided moderate benefit, the native species, <em>Rhizoglomus</em> sp. (Azn), emerged as the most effective, achieving a mycorrhization percentage of 28 % and an 80 % increase in root biomass compared to other treatments when combined with DOR. This study proposes an innovative, circular economy-driven approach to address diffuse pollution sources in the studied area by recommending the use of DOR and inoculation with sp. This approach proves superior in both soil and plant systems. Additionally, employing native inoculants and agricultural by-products, the research not only contributes to the valorization of local resources but also promotes economic growth while supporting environmental conservation efforts.</div></div>","PeriodicalId":73763,"journal":{"name":"Journal of hazardous materials advances","volume":"17 ","pages":"Article 100570"},"PeriodicalIF":5.4,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143176567","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":"Impact of annealing on ZnFe₂O₄: Structural, optical, magnetic, photocatalytic, and antibacterial properties with DFT insights into optical parameters","authors":"Padmapriya Kumar ,&nbsp;Jashwini Asokan ,&nbsp;S. Sriram ,&nbsp;M.C. Ramkumar ,&nbsp;P. Sathish Kumar ,&nbsp;M. Govindaraj Shalini","doi":"10.1016/j.hazadv.2025.100594","DOIUrl":"10.1016/j.hazadv.2025.100594","url":null,"abstract":"<div><div>Zinc ferrite (ZnFe₂O₄) nanoparticles were synthesized using a hydrothermal method and annealed at various temperatures ranging from 250 °C–750 °C. Comprehensive characterization was performed using X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-ray analysis (EDAX), Fourier transform infrared (FTIR) spectroscopy, photoluminescence (PL), and vibrating sample magnetometry (VSM). XRD confirmed the formation of a cubic spinel structure, with crystallite sizes varying between 30 and 40 nm for the annealed nanoparticles. It is observed from the BET analysis that the surface area and pore volume are indirectly proportional to the annealing temperature of the ZnFe₂O₄ nanoparticles. The FTIR spectra confirmed the presence of metal‒oxygen vibrations, particularly Zn<img>O and Fe<img>O bonds, and the PL studies revealed emission peaks indicating charge carrier recombination. Magnetic measurements revealed that the 750 °C annealed ZnFe₂O₄ nanoparticles had a saturation magnetization (M_s) of 4.04 emu/g, coercivity (H_c) of 14.28 Oe, and retentivity (M_r) of 0.0029 emu/g. ESR spectroscopy provided a g-value of 2.00 and a peak-to-peak linewidth (ΔHpp) of 67.008 mT. The photocatalytic activity of the nanoparticles was evaluated for the degradation of methylene blue under visible light irradiation, where T_A = 500 °C and T_A = 750 °C ZnFe₂O₄ nanoparticles exhibited the highest degradation efficiencies of 53 %. Antibacterial studies demonstrated that the 750 °C annealed ZnFe₂O₄ nanoparticles were effective against <em>B. subtilis</em> and <em>P. aeruginosa</em>, with zones of inhibition of 22 mm and 24 mm, respectively, comparable to those of the control. Density functional theory (DFT) calculations were performed to obtain insights into the electronic and optical properties of the ZnFe₂O₄ system. The DFT results imply that the electronic structure is fully dominated by the 3d electrons of the transition metal atoms and the 2p of the oxygen atoms. The calculated optical band gap of 1.74 eV closely aligns with the optical properties observed experimentally 1.82 eV for T_A = 500 °C, thereby validating the accuracy of the experimental findings. Additionally, the DFT analysis highlights the isotropic nature of the material with respect to the optical response, offering deeper insight into its suitability for photocatalytic applications. The combination of superior optical, magnetic, and structural properties, along with strong photocatalytic and antibacterial activities, makes zinc ferrite nanoparticles annealed at 750 °C promising candidate for environmental and biomedical applications.</div></div>","PeriodicalId":73763,"journal":{"name":"Journal of hazardous materials advances","volume":"17 ","pages":"Article 100594"},"PeriodicalIF":5.4,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143177324","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":"Integrative data-driven analytics for assessing ecological and human health risks of soil heavy metal contamination","authors":"Ujala Ejaz ,&nbsp;Shujaul Mulk Khan ,&nbsp;Shah Fahad Ali Shah ,&nbsp;Noreen Khalid ,&nbsp;Sadia Jehangir ,&nbsp;Zarrin Fatima Rizvi ,&nbsp;Jens-Christian Svenning","doi":"10.1016/j.hazadv.2025.100596","DOIUrl":"10.1016/j.hazadv.2025.100596","url":null,"abstract":"<div><div>Heavy Metals (HM) in soil pose a serious threat to environmental and public health, particularly in regions with extensive human activities. This study provides a comprehensive approach to evaluate the ecological and human health risks associated with eight key HM: copper (Cu), lead (Pb), nickel (Ni), chromium (Cr), zinc (Zn), cadmium (Cd), arsenic (As), and mercury (Hg). By utilizing advanced self-organizing maps (SOMs), this study identifies complex spatial patterns of HM contamination, pinpointing critical areas for targeted management interventions. The potential ecological risk index (PERI) highlights risks ranging from moderate to very high, with Cd, Pb, and Cr identified as the key contributors to ecological hazards due to their acute toxicity and extensive distribution. In addition, Monte Carlo simulations offer a comprehensive analysis of human health impacts, revealing significantly elevated non-carcinogenic and carcinogenic risks, particularly for children. The hazard indices (HI) and total cancer risk (TCR) values for Pb and As frequently exceed safety thresholds, indicating the need for protective measures for vulnerable groups. Structural equation modeling (SEM) further indicates that anthropogenic pressure and industrial activity significantly elevated soil concentrations of Cu and Cr, whereas agricultural activity was associated with increased Zn levels. By integrating advanced risk assessment methods, this study provided a practical, adaptable model for managing soil contamination risks, equipping policymakers and environmental managers with actionable insights to address the challenges of HM pollution and safeguard both ecosystems and public health.</div></div>","PeriodicalId":73763,"journal":{"name":"Journal of hazardous materials advances","volume":"17 ","pages":"Article 100596"},"PeriodicalIF":5.4,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143177328","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":"Seasonality of environmental health risks and soil pollution from an unsanitary landfill in Nigeria: Implications for water security, agriculture, and climate adaptation","authors":"C.C. Aralu ,&nbsp;P.A.C. Okoye ,&nbsp;V.C. Eze ,&nbsp;H.O. Abugu ,&nbsp;S.I. Abba ,&nbsp;J.C. Egbueri","doi":"10.1016/j.hazadv.2025.100597","DOIUrl":"10.1016/j.hazadv.2025.100597","url":null,"abstract":"<div><div>The increasing global waste crisis, coupled with inadequate landfill management in developing regions, poses significant environmental and public health risks, especially in areas with seasonal climate variations. While previous studies examined landfill contamination, limited research has investigated the seasonal dynamics of soil-environmental health risks and their implications for regional development and climate resilience. This study adopted a multi-parameter approach to assess the seasonal variations in contamination patterns and their impacts on environmental and human health, water security, and agricultural sustainability in Awka, Nigeria. It examined the implications of pollution from an unsanitary landfill, revealing substantial seasonal variations in soil contamination patterns. Analyses of potentially toxic elements (PTEs) showed that cadmium levels (1.23–4.42 ppm) exceeded WHO criteria, with higher levels reported in the wet season compared to the dry season. The pollution load indices indicated moderate to heavy pollution in study samples (1.69–2.54) and moderate pollution in control samples (1.06–1.69). Health risk assessments revealed high cancer risks for children through ingestion pathways (HI &gt; 10^–4), while adults had lower risks (HI ∼ 10^–5). The research unveiled critical implications for regional water security, agricultural productivity, sustainable landfill construction, and climate adaptation strategies. It also demonstrated that leachate migration patterns intensified during wet seasons, threatening groundwater resources. The findings illuminated the interconnections between waste management practices and climate resilience while providing a practical framework for assessing the seasonal variations in environmental health risks. The evidence-based recommendations for sustainable landfill management hinted on the need for seasonal monitoring and climate-adaptive waste management strategies in similar geological/environmental settings.</div></div>","PeriodicalId":73763,"journal":{"name":"Journal of hazardous materials advances","volume":"17 ","pages":"Article 100597"},"PeriodicalIF":5.4,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143177329","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":"Spatio-temporal variations of air pollutants and human health exposure impacts during 2023 haze through respiratory deposition analysis in Delhi-NCR, India","authors":"Mudit Yadav ,&nbsp;Sailesh N. Behera ,&nbsp;Raghu Betha","doi":"10.1016/j.hazadv.2024.100575","DOIUrl":"10.1016/j.hazadv.2024.100575","url":null,"abstract":"<div><div>This study investigated the impacts of the 2023 haze episode on air quality and respiratory health in the Delhi-National Capital Region (Delhi-NCR), India. Monitoring data for PM_2.5, PM₁₀, NO₂, NH₃, SO₂, O₃, and CO were collected at four representative sites (Delhi, Gurugram, Greater Noida, and Ghaziabad) and analyzed for spatiotemporal variations. Fire hotspot analysis, meteorological data, and backward trajectory analysis modeling revealed the elevated pollution levels during the haze episode were attributable to increased local emissions coupled with the transport of pollutants from biomass burning in neighboring states. To assess health risks, the International Commission on Radiological Protection (ICRP) modeling was used to estimate respiratory deposition dose (RDD) of PM_2.5 and PM₁₀ in the head airway (HA), tracheobronchial (TB), and alveolar (AL) regions for both males and females under three modes of metabolic activities of seated, walking and exercise. The results indicated a substantial increase in the total RDD (sum of HA, TB, and AL regions) across all sites, genders, and activity levels. For instance, PM_2.5 RDD in Delhi increased from 1.03 to 2.44 µg/min during the haze period for males under seated activity and from 0.72 to 1.69 µg/min for females. Overall, the study estimated a 130 % increase in health risk during the haze period across all activity levels and genders.</div></div>","PeriodicalId":73763,"journal":{"name":"Journal of hazardous materials advances","volume":"17 ","pages":"Article 100575"},"PeriodicalIF":5.4,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143177646","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}