Environmental Technology & Innovation最新文献

{"title":"Endocrine-disrupting chemicals and clinical outcomes in children with attention-deficit/hyperactivity disorder undergoing methylphenidate treatment: A 12-month follow-up study","authors":"Jade Winjei Hwang ,&nbsp;Wan-Ting Huang ,&nbsp;Chia-Jung Li ,&nbsp;Ching-Shu Tsai ,&nbsp;Wen-Jiun Chou ,&nbsp;Chih-Cheng Chen ,&nbsp;Sheng-Yu Lee ,&nbsp;Liang-Jen Wang","doi":"10.1016/j.eti.2025.104111","DOIUrl":"10.1016/j.eti.2025.104111","url":null,"abstract":"<div><div>Endocrine-disrupting chemicals (EDCs) can interfere with the endocrine system and may influence the risk of developing attention-deficit/hyperactivity disorder (ADHD). In this 12-month prospective study, we examined trends in EDC exposure and their association with neurocognitive changes in children diagnosed with ADHD. We recruited 83 children with ADHD and 80 healthy controls, measuring urinary levels of various EDCs, including mono-methyl phthalate (MMP), monoethyl phthalate (MEP), mono-n-butyl phthalate (MnBP), monobenzyl phthalate (MBzP), monoethylhexyl phthalate (MEHP), methylparaben (MP), ethylparaben (EP), propylparaben (PP), butylparaben (BP), and bisphenol-A (BPA). ADHD symptoms and cognitive performance were assessed using the ADHD-Rating Scale (ADHD-RS), Conners' Continuous Performance Test 3rd Edition (CPT3), and Conners' Continuous Auditory Test of Attention™ (CATA). At baseline, children with ADHD had significantly higher levels of MnBP and MEHP compared to healthy controls. Over the 12-month methylphenidate treatment, children with ADHD showed an increase in MEP levels and a decrease in MnBP, MEHP, MP, and BPA levels. ADHD-RS scores were negatively correlated with urinary MEP levels and positively correlated with MP levels. Additionally, CATA omission errors were positively associated with MnBP levels, while detectability errors were positively correlated with MEHP levels. These findings suggest that EDC levels in children with ADHD fluctuate during treatment and are associated with changes in ADHD symptoms and neuropsychological performance. This study provides valuable insights into the evolving relationship between EDC exposure and ADHD symptoms during treatment, contributing to the evaluation of potential health risks and informing public health policy development.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"38 ","pages":"Article 104111"},"PeriodicalIF":6.7,"publicationDate":"2025-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143534549","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}

{"title":"Understanding the impact of chemical composition and environmental factors on phosphorus species distribution in rivers: A large-scale study in Taihu Lake Basin","authors":"Xingqi Zhu,&nbsp;Xiaojing Yin,&nbsp;Lu Jiang,&nbsp;Jun Li,&nbsp;Wentao Li,&nbsp;Aimin Li","doi":"10.1016/j.eti.2025.104114","DOIUrl":"10.1016/j.eti.2025.104114","url":null,"abstract":"<div><div>To effectively remove phosphorus from rivers, there has been increasing attention on the various phosphorus species present. However, the factors influencing the distribution of these species have not been systematically investigated. This study examines the effects of chemical composition and environmental factors on phosphorus species distribution by analyzing river samples and conducting simulation experiments. Results indicated that phosphorus predominantly exists in particulate (33.24 −206.58 μg/L) and colloidal phases (7.91 −62.95 μg/L). Notable correlations were observed between metallic elements and inorganic phosphorus (IP) (R = 0.67 −0.88), as well as between organic carbon (OC) and organic phosphorus (OP) (R = 0.76 −0.82). Further analyses revealed that metal elements are electrostatically bound to IP, while OP is primarily produced alongside OC during organic matter decomposition. The study also highlights the influence of anions in water, which facilitate phosphorus release from particulate and colloidal forms. The examination of environmental factors revealed that both warming and anaerobic conditions led to an increase in various phosphorus species. However, the increase in particulate was less pronounced compared to the colloidal and dissolved phases. Notably, under aerobic conditions, phosphorus from the colloidal and dissolved phases is converted into particulate. These findings enhance our understanding of the distribution of phosphorus species and provide valuable insights for the eutrophication management.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"38 ","pages":"Article 104114"},"PeriodicalIF":6.7,"publicationDate":"2025-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143552846","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}

{"title":"Effect of powerless-ventilation on large-scale facultative composting: Maturity and pollutant gas emissions","authors":"Yanling Chen ,&nbsp;Xiaolu Feng ,&nbsp;Quan Yu ,&nbsp;Shanshan Li ,&nbsp;Xiaomin Xie ,&nbsp;Zhicheng Xu ,&nbsp;Xianjie Han ,&nbsp;Wenhai Luo ,&nbsp;Yun Li","doi":"10.1016/j.eti.2025.104115","DOIUrl":"10.1016/j.eti.2025.104115","url":null,"abstract":"<div><div>Composting can convert livestock manure into organic fertilizers. However, composting with forced aeration does not allow for large - scale composting due to power consumption. Therefore, this study investigated different powerless – ventilation conditions to improve the performance of large - scale facultative composting. Under the powerless-ventilation with double-membrane-covered and addition of cornstalks treatment, the maturity of compost was most effective (GI reached 118 %). The conditions of powerless - ventilation with membrane covering and cornstalk addition can reduce CH₄ emissions by 84.47 % and H₂S emissions by 28.08 %. The doublemembrane- covered treatment was less effective in reducing gas emission compared with single-membrane-covered. Among the composting conditions, the powerlessventilation with membrane-covered and addition of cornstalks could achieve the best effect of promoting maturity and reducing emissions. The nutrient contents of total nitrogen, total phosphorus, and total potassium increased by 6.21 %, 18.14 %, and 13.22 % under the conditions of powerless-ventilation with membrane-covered and addition of cornstalks. Optimizing the large-scale composting process is an important means to reduce the emission of pollutant gases. This study can provide scientific basis for the large-scale treatment of agricultural waste</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"38 ","pages":"Article 104115"},"PeriodicalIF":6.7,"publicationDate":"2025-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143552845","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}

{"title":"A putative adverse outcome pathway linking diesel engine exhaust with increased risks of metabolism-related diseases: A metabolomics-based molecular epidemiology study","authors":"Yuanyuan Chen ,&nbsp;Yanting Li ,&nbsp;Wen Gu ,&nbsp;Yuehan Long ,&nbsp;Yican Wang ,&nbsp;Hua Zhang ,&nbsp;Chenglei Qi ,&nbsp;Fuchang Deng ,&nbsp;Xinyu Zhan ,&nbsp;Song Tang ,&nbsp;Shanfa Yu ,&nbsp;Yuxin Zheng ,&nbsp;Yufei Dai ,&nbsp;Chunling Zhang","doi":"10.1016/j.eti.2025.104116","DOIUrl":"10.1016/j.eti.2025.104116","url":null,"abstract":"<div><div>Little is known about how diesel engine exhaust (DEE) exposure is associated with changes in blood lipid concentrations, as well as the molecular initiating events (MIEs) and mechanisms underlying this association. The aim of this research was to determine the MIEs and key molecular events and thus construct a putative adverse outcome pathway (AOP) from DEE exposure to an increased risk of metabolism-related diseases by integrating occupational epidemiology and metabolomics analyses. We recruited 136 participants with high DEE exposure and 99 healthy controls to investigate the associations between polycyclic aromatic hydrocarbons (PAHs; an exposure biomarker of DEE), blood lipids (high-density lipoprotein cholesterol (HDL-C) and low-density lipoprotein cholesterol), and plasma metabolites. Our results revealed that the concentrations of six OH-PAHs were increased significantly in urine samples from participants with high DEE exposure (<em>P</em> ≤ 0.001), and that 9-hydroxyphenanthrene (9-OHPh) is uniquely associated with decreased HDL-C concentrations (<em>P</em> = 0.034). Each 10 % increase in the 9-OHPh concentration corresponded to a 0.225 % decrease in the HDL-C concentration. Targeted metabolomics analysis revealed key pathways associated with both 9-OHPh and HDL-C, including alanine and glutamine metabolism, glutathione biosynthesis, sirtuin, and TP53 pathway. Additionally, nine metabolites (e.g. glutamate, glutamine, and glutathione) were enriched in pathways associated with both 9-OHPh and HDL-C. Bioinformatic analyses of these metabolites identified potential MIEs (e.g. CPT1B, LDHB, and SIX1) and adverse outcomes (liver damage, renal necrosis, and cardiac damage). Based on these findings, we propose for the first time a putative AOP connecting DEE exposure with metabolism-related disease risks, which is driven by alterations in MIEs, subsequent metabolic disturbances, and reduced HDL-C levels, thus providing crucial insights into environmental contributors to metabolic disorders.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"38 ","pages":"Article 104116"},"PeriodicalIF":6.7,"publicationDate":"2025-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143578431","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}

{"title":"Different film-mulching strategies alter soil biological characteristics and fungal and archaeal community structures under a drip fertigation system","authors":"Yingjie Li ,&nbsp;Lei Zhang ,&nbsp;Meng Wang ,&nbsp;Qian Li ,&nbsp;Bo Sun ,&nbsp;Yubo Qin ,&nbsp;Wei Ning ,&nbsp;Cuilan Li ,&nbsp;Jinjing Zhang ,&nbsp;Hang Liu","doi":"10.1016/j.eti.2025.104110","DOIUrl":"10.1016/j.eti.2025.104110","url":null,"abstract":"<div><div>Soil microorganisms play a crucial role in ecosystem succession. Thus, understanding the responses of microbial communities during film mulching with drip fertigation is essential. This study employed high-throughput sequencing to evaluate soil biological characteristics and the community composition, diversity, and potential ecological functions of fungi and archaea in a semi-arid region under drip fertigation with the following film mulching treatments: drip irrigation without mulching (DI), polyurethane film mulching (PF), and biodegradable film mulching (DF).The biodegradable film used in this study was composed of maize-specific poly (propylene carbonate), high molecular weight polyester, chain extenders, and layered nanofillers. Results demonstrated that, compared to PF, DF significantly enhanced microbial biomass carbon (MBC) by 8.4 %, microbial biomass nitrogen (MBN) by 17.1 %, and basal respiration (BR) by 10.6 %. Both DF and PF significantly increased soil sucrase (S-SC) activity, while reducing soil laccase (SL) and catalase (S-CAT) activities. Specifically, compared to DI, DF increased S-SC by 13.7 % and PF increased it by 20.3 %. Moreover, DF and PF significantly altered the fungal and archaeal community compositions and diversity. Specifically, DF exhibited a lower Shannon index for both fungi and archaea compared to PF, with a reduced relative abundance of potentially pathogenic microorganisms (<em>Fusarium</em>, <em>Leptosphaeria, Pseudomonas,</em> and <em>Acidovorax</em>) and an increased relative abundance of potentially beneficial microorganisms (<em>Powellomyces, Penicillium,</em> and <em>Methanosarcina</em>). Structural equation modeling (SEM) revealed that soil pH and MBC were the primary drivers of fungal and archaeal community alterations, respectively. Network analysis further indicated that DF promoted more stable fungal co-occurrence networks, enhancing resistance to environmental perturbations, while fostering stronger species interactions within archaeal co-occurrence networks. This study highlights the pivotal role of biodegradable film mulching in optimizing soil ecological environments and promoting sustainable agriculture, providing scientific evidence for improved agricultural management strategies.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"38 ","pages":"Article 104110"},"PeriodicalIF":6.7,"publicationDate":"2025-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143520148","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}

{"title":"Manure-residue co-application drives SOC sequestration through differential microbial strategist selection","authors":"Fan Huang ,&nbsp;Hailun Wang ,&nbsp;Sajjad Raza ,&nbsp;Kazem Zamanian ,&nbsp;Yinku Liang ,&nbsp;Xiaoning Zhao","doi":"10.1016/j.eti.2025.104109","DOIUrl":"10.1016/j.eti.2025.104109","url":null,"abstract":"<div><div>This study investigated how fertilizer affects microbial communities and carbon storage in soils with contrasting organic carbon levels (16.3 % vs. 1 % SOC). Soils were incubated for 67 days (25°C, 60 % water-filled pores) under four treatments: (NH₄)₂SO₄, manure, (NH₄)₂SO₄ with garlic stalk (RGS), and manure with RGS. The results reveal that alone (NH₄)₂SO₄ increased Proteobacteria relative abundance by 129 % (significantly higher than alone manure's 51 %) in high SOC soil (16.3 %). Manure combined with RGS enhanced K-strategists (+33 %), reduced r/K ratio, stabilized carbon pools, and achieved the highest SOC increment (+21 mg g⁻¹). In low SOC soil (1 %), RGS amended treatments triggered explosive growth of Firmicutes (+382–615 %), amplified r-strategists (+13 %) with elevated r/K ratios (39−47), driving soil organic carbon accumulation (+25 mg g⁻¹). The findings demonstrate that coordinated manure application with residues optimizes soil carbon through divergent microbial strategies - reinforcing K-strategists for carbon stabilization in high-SOC soils while activating r-strategists for carbon formation in low-SOC soils, achieving soil carbon pool enhancement.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"38 ","pages":"Article 104109"},"PeriodicalIF":6.7,"publicationDate":"2025-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143510186","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}

{"title":"Mechanistic study on the role of design and management factors in regulating phosphorus treatment performance in constructed wetlands","authors":"Yonghong Shu,&nbsp;Bochao Zhang,&nbsp;Bin Liao,&nbsp;Jiaer Wang,&nbsp;Qian Yu,&nbsp;Yuanlai Cui","doi":"10.1016/j.eti.2025.104094","DOIUrl":"10.1016/j.eti.2025.104094","url":null,"abstract":"<div><div>Surface flow constructed wetlands (SFCWs) have been recommended for treating phosphorus in agricultural drainage, with their performance correlated to design and management. However, the mechanisms by which these factors regulate phosphorus removal remain unclear. Understanding these mechanisms is crucial to promoting and applying SFCWs. In this study, field pilot-scale SFCWs were subjected to orthogonal tests to investigate the effect of aspect ratios (2:1, 4:1, 8:1), plant species (<em>Typha latifolia</em>, <em>Juncus effusus</em>, <em>Vallisneria natans</em>), and hydraulic loading rates (HLR) (0.23, 0.45, 0.68 m d^‐1) on phosphorus removal. The results showed that sediment storage was the primary pathway for total phosphorus (TP) removal, followed by plant uptake and periphyton assimilation. No significant differences in phosphorus treatment performance were observed across different levels of aspect ratio, plant species, and HLR. However, careful selection of these factors remained crucial for the sustainability of SFCWs. Plant species influenced plant uptake by affecting the biomass of both designed plants and weeds, while aspect ratio and HLR impacted it by impacting weed biomass. Sediment storage was influenced by plant species through their regulation of flow dispersion and designed plant biomass. The impact of HLR on sediment storage was mediated by its effect on flow dispersion and dissolved inorganic phosphorus concentration. Additionally, aspect ratio influenced sediment storage through its effect on flow dispersion. Overall, an aspect ratio of 8:1, <em>Typha</em> as the plant species, and an HLR of 0.45 m d^‐1 promote rapid plant establishment, extend sediment lifespan, enhance plant uptake and sediment storage capacity, and simplify management.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"38 ","pages":"Article 104094"},"PeriodicalIF":6.7,"publicationDate":"2025-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143534300","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}

{"title":"Response of bacterioplankton communities and their phosphorus metabolic functions to algal extinction and growth in a eutrophic plateau lake","authors":"Haijun Yuan ,&nbsp;Runyu Zhang ,&nbsp;Qiping Lu ,&nbsp;Qiang Huang ,&nbsp;Jingan Chen","doi":"10.1016/j.eti.2025.104108","DOIUrl":"10.1016/j.eti.2025.104108","url":null,"abstract":"<div><div>Phosphorus (P) control is critical for mitigating eutrophication, however, microbially driven P-cycling processes and their functional potential during algal succession remain elusive, especially in eutrophic plateau lakes. Here, we collected the overlying waters from algal decline, dormancy, recovery and outbreak periods in a large plateau lake of Southwest China, and examined the dynamic response of bacterioplankton communities and their P-functional genes to algal extinction and growth. We found that bacterioplankton composition showed significant differences among four distinct periods, and their diversity was highest in recovery period and lowest in outbreak period. During algal growth, the dominant phylum of bacterioplankton gradually switched from <em>Proteobacteria</em> to <em>Actinobacteria</em>. <em>Rhodococcus</em>, belonging to <em>Actinobacteria</em>, could effectively solubilize the inorganic P (Pi) from calcium phosphate (Ca-P) to intensify lake eutrophication. Notably, bacterioplankton communities with lower diversity exhibited higher stability. Bacterioplankton network was tightly connected in outbreak period with lower substructure, stronger interaction and higher complexity compared with other periods. Moreover, we detected high-abundance genes associated with phosphoester hydrolysis (e.g., <em>ugpQ</em>), purine metabolism (e.g., <em>ppx</em>), oxidative phosphorylation (e.g., <em>ppk</em> and <em>ppa</em>) and P transport (e.g., <em>pstS</em>). Bacterioplankton secreted gluconic acid by activating <em>gcd</em> to solubilize Ca-P in outbreak period, and activated <em>ppx</em> to regulate pppGpp in response to environmental stresses like dissolved oxygen. Note that organic phosphate mineralization was primarily regulated by <em>phnK</em> in dormancy and recovery periods, and by <em>phoD</em>, <em>phoX</em>, <em>bpp</em> and <em>cphy</em> in outbreak period. By encoding <em>ppk</em>, bacterioplankton polymerized the excess Pi into polyphosphates for continuing P cycle. Collectively, our study provides a valuable microbial perspective to decipher the mechanism of P metabolism response to algal succession in plateau lakes, which can advance the understanding and management of eutrophication.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"38 ","pages":"Article 104108"},"PeriodicalIF":6.7,"publicationDate":"2025-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143534548","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}

{"title":"Spatiotemporal evolution of land use carbon emissions and multi scenario simulation in the future—Based on carbon emission fair model and PLUS model","authors":"Tianqi Rong ,&nbsp;Mingzhou Qin ,&nbsp;Pengyan Zhang ,&nbsp;Yinghui Chang ,&nbsp;Zhenyue Liu ,&nbsp;Zhanfei Zhang","doi":"10.1016/j.eti.2025.104087","DOIUrl":"10.1016/j.eti.2025.104087","url":null,"abstract":"<div><div>With the increase of carbon dioxide concentration, global warming has become increasingly serious, and has posed a serious threat to human survival and the ecological environment. The land use carbon emissions (LUCE) are only second to those caused by fossil fuel combustion. The affected area of the lower Yellow River (ALYR) is an essential grain producing area in China. Studying its LUCE and future development has practical significance for the low-carbon development and food security of the basin. We analyzed the characteristics and drivers of LUCE in the ALYR from 2000 to 2018 and simulated the LUCE under different scenarios in 2030. The LUCE in the ALYR were in a continuous growth trend, with a growth rate of 27.94 %, and the economic efficiency and ecological carrying capacity remained stable. The built-up land area and the proportion of secondary industry in Gross Domestic Product (GDP) can promote the LUCE, while the per capita GDP has a suppressive effect. The LUCE will decrease in 2030, with the least LUCE under the cultivated land protection scenario. Compared to previous studies, this study enriches existing research from two aspects: economic/ecological fair of LUCE and prediction of different future scenarios. This provides a new research perspective for reducing LUCE and achieving regional carbon reduction. From a practical perspective, the results can not only provide reference for low-carbon land use in the ALYR, but also provide ideas for carbon reduction and sustainable development in other watersheds that are greatly disturbed by human activities.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"38 ","pages":"Article 104087"},"PeriodicalIF":6.7,"publicationDate":"2025-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143487836","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}

{"title":"Heavy metal pollution and source analysis of soils around abandoned Pb/Zn smelting sites: Environmental risks and fractionation analysis","authors":"Muhammad Adnan ,&nbsp;Peng Zhao ,&nbsp;Baohua Xiao ,&nbsp;Muhammad Ubaid Ali ,&nbsp;Peiwen Xiao","doi":"10.1016/j.eti.2025.104084","DOIUrl":"10.1016/j.eti.2025.104084","url":null,"abstract":"<div><div>We used granulometric techniques, wet sieve analysis and Tessier sequential extraction<!--> <!-->to analyze heavy metal (HM) contamination in soils from abandoned Pb/Zn smelting sites in Zhuzhou, China. The soil pH values varied between 6.47 and<!--> <!-->8.50 (mean 8.02), which controls the mobility of HMs, and total organic carbon (TOC) levels averaged 3.48 g/kg. Sequential extraction reveals that the majority of HMs are present in the residual, Fe-Mn oxide, and organic<!--> <!-->bound fractions, with the exception of Cd and As with high bioavailability Cd (0.81–4.07 mg/kg)<!--> <!-->and As (70.18–295.90 mg/kg). Zn occurs predominantly in<!--> <!-->residual and Fe-Mn phases, while Cd exists primarily as the exchangeable fraction, both of which can cause an environmental risk. The positive relationship between finer<!--> <!-->particle size and HM content demonstrates that soil texture plays a significant role in HM retention and mobility. Pollution indices (I-geo, PI, and NPI) indicate high to extremely high Cd concentrations, as well as<!--> <!-->As risk, with a substantial ecological risk index (RI) surpassing safety thresholds. The positive matrix factorization (PMF) and principal component analysis (PCA) reveal industrial emissions, atmospheric<!--> <!-->deposition, and soil parent materials to be prominent sources of contamination. These findings highlight the necessity for specific remediation actions, especially concerning Cd<!--> <!-->and As to diminish ecological risks and potential human health threats while stressing the need for ongoing monitoring and sustainable management in the affected areas from historical smelting activities.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"38 ","pages":"Article 104084"},"PeriodicalIF":6.7,"publicationDate":"2025-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143474583","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}