Soil & Environmental Health最新文献_第5页

Rhizosphere microbiota alleviate As accumulation in maize intercropped with peanut in long-term Cd and As co-contaminated farmland 长期镉砷共染农田根际微生物群对玉米间作花生砷积累的缓解作用

Soil & Environmental Health Pub Date : 2025-07-01 Epub Date: 2025-06-17 DOI: 10.1016/j.seh.2025.100162

Tong Wu , Hong-Xin Sun , Li-Ping Geng , Shu-Shen Yang , Pei-Ying Xue , Pei-Pei Gao , Meng-Zhen Han , Wen-Ju Liu

{"title":"Rhizosphere microbiota alleviate As accumulation in maize intercropped with peanut in long-term Cd and As co-contaminated farmland","authors":"Tong Wu , Hong-Xin Sun , Li-Ping Geng , Shu-Shen Yang , Pei-Ying Xue , Pei-Pei Gao , Meng-Zhen Han , Wen-Ju Liu","doi":"10.1016/j.seh.2025.100162","DOIUrl":"10.1016/j.seh.2025.100162","url":null,"abstract":"<div><div>Root-associated microbiota play an important role in regulating heavy metal transfter from soil to crops in contaminated areas. Maize-peanut intercropping is a cultivation pattern that directly influences the composition and function of the root-associated microbiota in farmland. However, it remains unclear whether this intercropping affects the accumulation of As and Cd in the edible parts of crops by altering the root microbial community in long-term As and Cd co-contaminated farmland. A field experiment was conducted to explore the mechanisms of intercropping maize-peanut on regulating the behaviors of As and Cd in soil-crop system by recruiting the specific root-associated microbial communities. The results demonstrated that intercropping maize-peanut significantly decreased the As concentration in the grains of intercropped maize (IM) up to 61.0 % compared with monocropping maize. Specifically, at the jointing stage, IM recruited the distinct root-associated microorganisms, including Actinobacteria <em>Lechevalieria</em>, <em>Nocardioides</em>, <em>Agromyces</em>, and <em>Blastococcus</em>, and Alphaproteobacteria <em>norank_f__Geminicoccaceae</em>. These microbial communities were closely associated with the As bioavailability in the rhizosphere soil and As accumulation in maize tissues, especially grain-As of IM. However, intercropping maize-peanut had no significant effect on Cd concentrations in the grains of either maize or peanut. This study verified that the intercropping maize-peanut might be a better approach to guarantee the safety of crop products in As-contaminated soil, but not in Cd- or Cd-As co-contaminated farmland.</div></div>","PeriodicalId":94356,"journal":{"name":"Soil & Environmental Health","volume":"3 3","pages":"Article 100162"},"PeriodicalIF":0.0,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144482402","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

High Fe and Ca contents contribute to geologically-high As but bioaccessibly-low As in karstic residential soils 高铁、高钙对岩溶性居住土壤的地质高砷、生物可及性低砷有贡献

Soil & Environmental Health Pub Date : 2025-04-01 Epub Date: 2025-02-20 DOI: 10.1016/j.seh.2025.100142

Yuanchen Zhang , Guobing Lin , Chenjing Liu , Zhongfang Yang , Lena Q. Ma

{"title":"High Fe and Ca contents contribute to geologically-high As but bioaccessibly-low As in karstic residential soils","authors":"Yuanchen Zhang , Guobing Lin , Chenjing Liu , Zhongfang Yang , Lena Q. Ma","doi":"10.1016/j.seh.2025.100142","DOIUrl":"10.1016/j.seh.2025.100142","url":null,"abstract":"<div><div>Karstic soils are often naturally-high in As contents, primarily due to the secondary enrichment during soil weathering from carbonate rocks. However, the As risk via soil exposure for residents in karst areas remains unclear. In this study, we collected 32 residential soils from rural karst area in Guangxi and measured their total As, Fe, Ca and organic C contents. To assess their health risk, we determined and compared bioaccessible As, Fe, and Ca using three <em>in vitro</em> assays (solubility bioaccessibility research consortium-SBRC, physiologically based extraction test-PBET, and <em>in vitro</em> gastrointestinal methods-IVG). The karstic soils showed high As contents at 8.09–256 mg kg<sup>−1</sup>, averaging 58.2 mg kg<sup>−1</sup>, but low bioaccessible As at 0.386–0.977 mg kg<sup>−1</sup>, averaging 0.783 mg kg<sup>−1</sup>. The As bioaccessibility was low at 1.14–3.34%, averaging 1.97%, suggesting a low health risk to humans via incidental oral ingestion. The high Fe content averaging 74.8 g kg<sup>−1</sup> may have contributed to As enrichment in karstic soils, with a positive correlation of R<sup>2</sup> = 0.623. Further, the low Fe bioaccessibility at 0.28% in the gastric phase of SBRC indicated that Fe was poorly soluble in simulated gastrointestinal solution, which may have contributed to low bioaccessible As (R<sup>2</sup> = 0.360). Besides, bioaccessible Ca and soil organic C may also play a role with R<sup>2</sup> = 0.404−0.449. This study sheds light on the high total As contents but low bioaccessible As in residential soils, indicating the low health risks via incidental oral ingestion in karst areas.</div></div>","PeriodicalId":94356,"journal":{"name":"Soil & Environmental Health","volume":"3 2","pages":"Article 100142"},"PeriodicalIF":0.0,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143600631","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}

引用次数: 0

Systematic evaluation of soil-based zeolite materials for the remediation of metal(loid)-contaminated water bodies 土壤基沸石材料修复金属（样）污染水体的系统评价

Soil & Environmental Health Pub Date : 2025-04-01 Epub Date: 2025-02-20 DOI: 10.1016/j.seh.2025.100143

Zheting Chu , Huan Tang , Jiaxin Liang , Jing Li, Dazhong Yang, Ranhao Wang, Hong Chen

{"title":"Systematic evaluation of soil-based zeolite materials for the remediation of metal(loid)-contaminated water bodies","authors":"Zheting Chu , Huan Tang , Jiaxin Liang , Jing Li, Dazhong Yang, Ranhao Wang, Hong Chen","doi":"10.1016/j.seh.2025.100143","DOIUrl":"10.1016/j.seh.2025.100143","url":null,"abstract":"<div><div>The synthesis of a diverse framework structure of zeolite materials using abundant natural soils as raw materials showcases the implementation of green chemistry principles and their feasibility for environmental engineering. However, no systematic evaluation of the soil-based zeolite materials for the remediation of metal(loid)-contaminated water bodies has been conducted. Herein, using the widely spread Chinese red soil and loess as raw materials, we have successfully synthesized eight zeolite materials and established a novel soil-based zeolite library. All eight zeolite types had different adsorption capacity for 10 metal(loid) ions, including As(III), As(V), Cd, Cr(III), Cr(VI), Cu, Hg, Ni, Pb, and Zn. The selectivity regarding different metal(loid) ions of zeolites was influenced by their framework structures, pH, speciation, and concentration of coexisting ions. A mechanism study revealed that ion exchange, electrostatic attraction, and chemical precipitation synergistically contribute to the interactions between soil-based zeolite materials and metal(loid)s. This work demonstrated the construction of a soil-based zeolite library from natural soils in line with green chemistry principles. Systematic metal(loid) adsorption data for diverse water bodies were presented, including deionized, tap, sea and river water. The information is important for future engineering application of soil-based zeolites in metal(loid)-contaminated water or soil remediation.</div></div>","PeriodicalId":94356,"journal":{"name":"Soil & Environmental Health","volume":"3 2","pages":"Article 100143"},"PeriodicalIF":0.0,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143509018","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}

引用次数: 0

Challenges of continuous cropping in Rehmannia glutinosa: Mechanisms and mitigation measures 地黄连作的挑战：机制和缓解措施

Soil & Environmental Health Pub Date : 2025-04-01 Epub Date: 2025-02-28 DOI: 10.1016/j.seh.2025.100144

Tao Gan , Zhaofeng Yuan , Williamson Gustave , Tianyu Luan , Lizhi He , Zhemin Jia , Xinyu Zhao , Shuo Wang , Yun Deng , Xiaokai Zhang , Feng He

{"title":"Challenges of continuous cropping in Rehmannia glutinosa: Mechanisms and mitigation measures","authors":"Tao Gan , Zhaofeng Yuan , Williamson Gustave , Tianyu Luan , Lizhi He , Zhemin Jia , Xinyu Zhao , Shuo Wang , Yun Deng , Xiaokai Zhang , Feng He","doi":"10.1016/j.seh.2025.100144","DOIUrl":"10.1016/j.seh.2025.100144","url":null,"abstract":"<div><div><em>Rehmannia glutinosa</em> is a widely cultivated medicinal herb, which faces significant challenges due to continuous cropping obstacles (CCO). After one year of cultivating in the same field, replanting is unsuccessful for the next 8–10 years due to the accumulation of allelochemicals, deterioration of soil properties, and disruptions in soil microbial communities. These factors severely impact plant growth, quality, and overall soil health. This review examines the causes and adverse effects of CCO in <em>R. glutinosa</em> cultivation and evaluates various strategies to mitigate them. CCO arise from complex interactions between the plant root system, soil properties, and microbial communities. A key contributor is the accumulation of phenolic acids in the rhizosphere, which alters soil physicochemical properties and promotes the proliferation of root pathogens, including fungi and root-knot nematodes. This creates a self-reinforcing cycle of soil degradation and plant stress, exacerbating CCO. Approaches such as variety selection, optimized crop rotation patterns, and the application of plant growth-promoting rhizobacteria are discussed in the article. Additionally, soil disinfection techniques, including fumigation, organic amendments, flooding, and mulching, are reviewed for their potential to suppress pathogens and restore soil health. The role of biochar, compost, and beneficial microorganisms, applied individually or in combination, to alleviate CCO and improve soil conditions are also highlighted. This review aims to provide a theoretical framework and practical guidance for overcoming CCO in <em>R. glutinosa</em> cultivation, contributing to sustainable agricultural practices for this important medicinal crop.</div></div>","PeriodicalId":94356,"journal":{"name":"Soil & Environmental Health","volume":"3 2","pages":"Article 100144"},"PeriodicalIF":0.0,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143619669","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}

引用次数: 0

The biomineralization process of Ochrobactrum EEELCW01 and its implication for arsenic immobilization Ochrobactrum EEELCW01的生物矿化过程及其对砷固定化的意义

Soil & Environmental Health Pub Date : 2025-04-01 Epub Date: 2025-02-20 DOI: 10.1016/j.seh.2025.100141

Yayuan Huang , Yuxuan Luo , Chuan Wu , Waichin Li , Hongren Chen , Yahui Wu , Shengguo Xue

{"title":"The biomineralization process of Ochrobactrum EEELCW01 and its implication for arsenic immobilization","authors":"Yayuan Huang , Yuxuan Luo , Chuan Wu , Waichin Li , Hongren Chen , Yahui Wu , Shengguo Xue","doi":"10.1016/j.seh.2025.100141","DOIUrl":"10.1016/j.seh.2025.100141","url":null,"abstract":"<div><div>Some bacterial strains have mineralization functions and can effectively reduce the bioavailability of toxic metal(loid) arsenic (As) in soils, but the potential mechanisms are still unclear. In this study, the nitrate-dependent Fe-oxidizing bacterium <em>Ochrobactrum</em> EEELCW01 was used to study the biomineralization process and its extracellular polymeric substances (EPS). In the biomineralization mediated by <em>Ochrobactrum</em> EEELCW01, the products are mainly amorphous Fe oxides and smaller amounts of poorly crystalline goethite. Confocal laser scanning microscopy images confirmed the presence of large amounts of EPS in the bacterial treatments. In the Fe-oxidizing bacteria-EPS-mineral aggregates, exopolysaccharide, Fe(III) and minerals showed a high degree of colocalization. During biomineralization, minerals undergo dissolution-recrystallization cycles, with goethite and siderite as the final stable compounds. Moreover, within 30 days, <em>Ochrobactrum</em> EEELCW01 reduced the soil available As concentration significantly. Our results enhance the mechanistic understanding of the biomineralization and related As immobilization processes mediated by <em>Ochrobactrum</em> EEELCW01, with potential application to the remediation of As-polluted soils.</div></div>","PeriodicalId":94356,"journal":{"name":"Soil & Environmental Health","volume":"3 2","pages":"Article 100141"},"PeriodicalIF":0.0,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143509017","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}

引用次数: 0

Geochemical behavior of engineered nanoparticles under biotic and abiotic processes 工程纳米颗粒在生物和非生物过程中的地球化学行为

Soil & Environmental Health Pub Date : 2025-04-01 Epub Date: 2025-03-22 DOI: 10.1016/j.seh.2025.100145

Shunling Li , Chenghong Ao , Min Wu , Peng Zhang , Bo Pan , Baoshan Xing

{"title":"Geochemical behavior of engineered nanoparticles under biotic and abiotic processes","authors":"Shunling Li , Chenghong Ao , Min Wu , Peng Zhang , Bo Pan , Baoshan Xing","doi":"10.1016/j.seh.2025.100145","DOIUrl":"10.1016/j.seh.2025.100145","url":null,"abstract":"<div><div>Engineered nanoparticles (ENPs) are inevitably released into the environment, causing health concerns due to their increased concentrations and negative impacts. In natural settings, organisms may encounter transformed ENPs due to their interactions with diverse environmental substances. While numerous reviews have discussed the environmental behavior and toxicity of ENPs, a comprehensive understanding of their transformation in the environment remains insufficient. This review focused on the behavior of ENPs and their transformations across various environmental compartments, including aggregation, oxidation, dissolution and vulcanization, which is essential for understanding their environmental fate, bioavailability and toxicity. The interactive mechanisms between both pristine and transformed ENPs and microorganisms or crop plants, as well as the negative and positive impacts of the transformed ENPs are discussed in details. Special emphasis is placed on the influence of ENPs on greenhouse gas emissions from microorganisms, the transformation of ENPs in crop plants, and the effects of root exudates on ENPs cycling. Through these discussions, we proposed several important considerations in the applications and implications of ENPs in the environment.</div></div>","PeriodicalId":94356,"journal":{"name":"Soil & Environmental Health","volume":"3 2","pages":"Article 100145"},"PeriodicalIF":0.0,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143784043","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}

引用次数: 0

Insights into different microwave-activated persulfate systems for chlorpyrifos degradation in soil: Impacts of soil properties, toxicity, and energy consumption 不同微波激活过硫酸盐系统对毒死蜱在土壤中降解的影响：土壤性质、毒性和能量消耗的影响

Soil & Environmental Health Pub Date : 2025-04-01 Epub Date: 2025-02-12 DOI: 10.1016/j.seh.2025.100139

Xiao Shang , Li Gao , Zheng Sun , Zhenming Liang , Xitao Liu , Chunye Lin , Mengchang He , Wei Ouyang

{"title":"Insights into different microwave-activated persulfate systems for chlorpyrifos degradation in soil: Impacts of soil properties, toxicity, and energy consumption","authors":"Xiao Shang , Li Gao , Zheng Sun , Zhenming Liang , Xitao Liu , Chunye Lin , Mengchang He , Wei Ouyang","doi":"10.1016/j.seh.2025.100139","DOIUrl":"10.1016/j.seh.2025.100139","url":null,"abstract":"<div><div>Different microwave-activated persulfate (MP) systems exhibit considerable degradation efficiency towards chlorpyrifos in soil, a typical organophosphorus pesticide. However, only considering degradation efficiency cannot fully verify the effectiveness of MP systems in remediating chlorpyrifos-contaminated soil. Multiple evaluations, including soil characterization, toxicity assessment, and energy consumption estimation, were conducted to investigate the effectiveness of MP technologies. While the differences in soil morphology and structure were relatively small, soil dissolved organic matter varied with different MP treatments. Compared with parent compounds, the predicted toxicity of the degradation products was reduced. The acute toxicity and phytotoxicity of the solid phase reduced after the MP treatments, with the germination rate, and stem and root lengths of tall fescue being increased. However, the toxicity of residual oxidants in the liquid phase cannot be ignored, reducing ∼35% germination rate in ryegrass seed and luminescence intensity in bacteria. A constant microwave temperature was beneficial for degrading lower concentrations of chlorpyrifos, whereas constant microwave power was beneficial for degrading higher concentrations of chlorpyrifos. In short, the MP technology may be suitable for remediating chlorpyrifos-contaminated soil, and a comprehensive evaluation provides a theoretical basis for its practical application in soil remediation.</div></div>","PeriodicalId":94356,"journal":{"name":"Soil & Environmental Health","volume":"3 2","pages":"Article 100139"},"PeriodicalIF":0.0,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143534832","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}

引用次数: 0

Role of permafrost thaw transitions in biogeochemical nitrogen cycling 冻土解冻转变在生物地球化学氮循环中的作用

Soil & Environmental Health Pub Date : 2025-04-01 Epub Date: 2025-03-28 DOI: 10.1016/j.seh.2025.100148

Merritt N. Logan , Monique S. Patzner , Jacob P. VanderRoest , Bridget B. McGivern , Nivetha Srikanthan , Myrna J. Simpson , Amy M. McKenna , Kelly C. Wrighton , Casey Bryce , Andreas Kappler , Thomas Borch

{"title":"Role of permafrost thaw transitions in biogeochemical nitrogen cycling","authors":"Merritt N. Logan , Monique S. Patzner , Jacob P. VanderRoest , Bridget B. McGivern , Nivetha Srikanthan , Myrna J. Simpson , Amy M. McKenna , Kelly C. Wrighton , Casey Bryce , Andreas Kappler , Thomas Borch","doi":"10.1016/j.seh.2025.100148","DOIUrl":"10.1016/j.seh.2025.100148","url":null,"abstract":"<div><div>Significant organic nitrogen (ON) stocks have accumulated in permafrost peatlands over millennia. Climate change is expected to increase peatland thaw, making this ON more susceptible to biogeochemical degradation. However, the interplay between thaw-released N and N cycling remains poorly understood. To elucidate ON composition across a thaw transition (palsa to thaw front to bog), we employed 21 T electrospray ionization Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR MS) and nuclear magnetic resonance (NMR) spectroscopy. In addition, we performed metatranscriptomic sequencing to evaluate microbial activity changes in N cycling pathways between the palsa and bog. We observed an approximate 10-fold increase in dissolved ON and a significant rise in ammonium concentration between the palsa and thaw front. Additionally, there was a reduction in the peptide-like fraction and an increase in the aromatic fraction of dissolved ON molecules. Dissolved ON concentrations decreased by 73 % between the thaw front and bog, while expression of ammonium-producing genes was significantly higher in the bog compared to the palsa. Our findings highlight the release and rapid compositional shift of ON during thaw transitions. This underscores the need for further studies on thaw-released N to enhance models predicting N cycling and Arctic greenhouse gas emissions.</div></div>","PeriodicalId":94356,"journal":{"name":"Soil & Environmental Health","volume":"3 2","pages":"Article 100148"},"PeriodicalIF":0.0,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143807713","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Risk assessment based on Cr, Mn, Co, Ni, Cu, Zn, Ba, Pb, and Sc contents in soils and blood Pb levels in children: Seasonable variations and Monte Carlo simulations 基于土壤中Cr、Mn、Co、Ni、Cu、Zn、Ba、Pb和Sc含量和儿童血铅水平的风险评估：季节性变化和蒙特卡罗模拟

Soil & Environmental Health Pub Date : 2025-04-01 Epub Date: 2025-01-20 DOI: 10.1016/j.seh.2025.100131

He Shen , Xiaoping Li , Jie Dong , Xueming Zheng , Yueheng Jiang , Pengyuan Jin , Xuelian Kui , Huimin Liu , Xu Zhang , Xiangyang Yan

{"title":"Risk assessment based on Cr, Mn, Co, Ni, Cu, Zn, Ba, Pb, and Sc contents in soils and blood Pb levels in children: Seasonable variations and Monte Carlo simulations","authors":"He Shen , Xiaoping Li , Jie Dong , Xueming Zheng , Yueheng Jiang , Pengyuan Jin , Xuelian Kui , Huimin Liu , Xu Zhang , Xiangyang Yan","doi":"10.1016/j.seh.2025.100131","DOIUrl":"10.1016/j.seh.2025.100131","url":null,"abstract":"<div><div>Potentially toxic metals (PTMs) in soil pose threats and hazards to human health. Their seasonal variations were observed and thus their risks. However, limited research was conducted based on the seasonal variations of soil PTMs and children's blood lead levels (BLLs). In this study, seasonable variations of PTM risks (Cr, Mn, Co, Ni, Cu, Zn, Ba, and Pb) and 0–6 years old children's BLLs were investigated based on 534 Xi'an seasonable soils (spring, summer and winter) and Monte Carlo simulations. The results indicate that the distributions of PTMs and risks depended on seasonas. The highest Mn, Cr, Cu, and Pb contents appeared in the winter, which were 785, 148, 146, and 134 mg/kg, respectively. Pollution load index ranged 1.14–1.15, while ecological risk index was 30.6–30.9. Further, non-carcinogenic risk for Pb was 2.27–2.36 × 10<sup>−2</sup>, Zn was 8.10–8.73 × 10<sup>−4</sup> and Cu was 1.89–1.94 × 10<sup>−2</sup>. PTM contamination was slightly higher in the winter compared to spring and summer. Although PTMs posed mild pollution and acceptable risk, seasonal variations affected children's BLLs, particularly in the winter. The Zn, Cu, and Pb from automobile emissions were identified as the most significant source and priority contaminants in Xi'an, with blood Pb levels being slightly higher in winter at 3.24–3.39 μg/dL. This study highlights the importance of developing targeted strategies to mitigate Pb risks in urban areas, particularly addressing seasonal variations, to reduce children's BLLs effectively.</div></div>","PeriodicalId":94356,"journal":{"name":"Soil & Environmental Health","volume":"3 2","pages":"Article 100131"},"PeriodicalIF":0.0,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143419250","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}

引用次数: 0

Germanium in the environment: Current knowledge and gap identification 环境中的锗：现有知识和差距识别

Soil & Environmental Health Pub Date : 2025-04-01 Epub Date: 2025-01-21 DOI: 10.1016/j.seh.2025.100132

Montserrat Filella , Juan Carlos Rodríguez-Murillo

{"title":"Germanium in the environment: Current knowledge and gap identification","authors":"Montserrat Filella , Juan Carlos Rodríguez-Murillo","doi":"10.1016/j.seh.2025.100132","DOIUrl":"10.1016/j.seh.2025.100132","url":null,"abstract":"<div><div>Trace element germanium (Ge) plays a key role in some modern technologies including fibre optics, infrared optics, and semiconductors, but remains under-researched in environmental contexts. Naturally occurring in low concentrations, Ge behaves similarly to Si and is often found in mineral particles rather than in dissolved form in soils and freshwaters. Its distribution in the environment is largely driven by weathering processes, where it replaces Si in silicate minerals, making it a valuable indicator of weathering intensity through Ge/Si ratios. In oceans, estuaries and lakes, Ge follows the Si cycle, especially in diatom-dominated systems. However, the emphasis on Ge/Si ratios has somewhat overshadowed direct studies on its independent geochemical cycling, mobility and potential ecological impacts. This has left gaps in understanding the unique aspects of Ge's behaviours in natural and polluted systems, both at the level of understanding laboratory-scale interactions (e.g., binding by natural organic matter, and iron oxyhydroxides) and data collection in environmental compartments (e.g., lack of data on methylated species). The measurement of Ge in the environment is technically challenging due to its low concentrations and the complexity of its chemical forms, which partially explains the lack of data and/or their poor quality. This review is the first comprehensive effort to compile the published data, assessing their reliability and identifying the main processes and gaps in our knowledge. The collected data on environmental compartments are provided ready for use, which will facilitate the completion of the collection and integration of new data.</div></div>","PeriodicalId":94356,"journal":{"name":"Soil & Environmental Health","volume":"3 2","pages":"Article 100132"},"PeriodicalIF":0.0,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143436637","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}

引用次数: 0