环境科学学报（英文版）/Journal Journal of Environmental SciencesCSCDCSTPCD北大核心EISCI
查看更多>>Journal of Environmental Sciences是由中国科学院生态环境研究中心主办的中国第一份环境科学方面的综合性英文版学术期刊，是我国在环境科学研究领域与国际交流的窗口。自1989年创刊以来受到了国际环境科学界的关注，目前已有四十余个国内外检索机构收录本刊内容，其中包括美国科学引文文摘扩展版（SCIE/web Science）和EI。36位海外编委参与本刊编委会工作，目前该杂志由中国科学出版社和荷兰IOS出版社联合发行，订户遍及世界各主要国家。
查看更多>>摘要：Arsenic(As)pollution in soils is a pervasive environmental issue.Biochar immobilization offers a promising solution for addressing soil As contamination.The efficiency of biochar in immobilizing As in soils primarily hinges on the characteristics of both the soil and the biochar.However,the influence of a specific property on As immobilization varies among different studies,and the development and application of arsenic passivation materials based on biochar often rely on empirical knowledge.To enhance immobilization efficiency and reduce labor and time costs,a machine learning(ML)model was employed to predict As immobilization efficiency before biochar application.In this study,we collected a dataset comprising 182 data points on As immobilization efficiency from 17 publications to con-struct three ML models.The results demonstrated that the random forest(RF)model out-performed gradient boost regression tree and support vector regression models in predictive performance.Relative importance analysis and partial dependence plots based on the RF model were conducted to identify the most crucial factors influencing As immobilization.These findings highlighted the significant roles of biochar application time and biochar pH in As immobilization efficiency in soils.Furthermore,the study revealed that Fe-modified biochar exhibited a substantial improvement in As immobilization.These insights can fa-cilitate targeted biochar property design and optimization of biochar application conditions to enhance As immobilization efficiency.
Paula Alejandra Lamprea PinedaKristof DemeestereAllan Augusto Alvarado-AlvaradoFrank Devlieghere...
268-281页
查看更多>>摘要：The study of microbial hydrocarbons removal is of great importance for the development of future bioremediation strategies.In this study,we evaluated the removal of a gaseous mix-ture containing toluene,m-xylene,ethylbenzene,cyclohexane,butane,pentane,hexane and heptane in aerated stirred bioreactors inoculated with Rhodococcus erythropolis and operated under non-sterile conditions.For the real-time measurement of hydrocarbons,a novel sys-tematic approach was implemented using Selected-Ion Flow Tube Mass Spectrometry(SIFT-MS).The effect of the carbon source(～9.5 ppmv)on(i)the bioreactors'performance(BR1:dosed with only cyclohexane as a single hydrocarbon versus BR2:dosed with a mixture of the 8 hydrocarbons)and(ii)the evolution of microbial communities over time were investi-gated.The results showed that cyclohexane reached a maximum removal efficiency(RE)of 53％±4％in BR1.In BR2,almost complete removal of toluene,m-xylene and ethylbenzene,being the most water-soluble and easy-to-degrade carbon sources,was observed.REs below 32％were obtained for the remaining compounds.By exposing the microbial consortium to only the five most recalcitrant hydrocarbons,REs between 45％±5％and 98％±1％were reached.In addition,we observed that airborne microorganisms populated the bioreactors and that the type of carbon source influenced the microbial communities developed.The abundance of species belonging to the genus Rhodococcus was below 10％in all bioreactors at the end of the experiments.This work provides fundamental insights to understand the complex behavior of gaseous hydrocarbon mixtures in bioreactors,along with a systematic approach for the development of SIFT-MS methods.
查看更多>>摘要：There have been reports of potential health risks for people from hydrophobic organic pol-lutants,such as polycyclic aromatic hydrocarbons(PAHs),polychlorinated hydrocarbons(PCHs),and organophosphate flame retardants(OPFRs).When a contaminated site is used for residential housing or public utility and recreation areas,the soil-bound organic pollu-tants might pose a threat to human health.In this study,we investigated the contamination profiles and potential risks to human health of 15 PAHs,6 PCHs,and 12 OPFRs in soils from four contaminated sites in China.We used an in vitro method to determine the oral bioac-cessibility of soil pollutants.Total PAHs were found at concentrations ranging from 26.4 ng/g to 987 ng/g.PCHs(0.27-14.3 ng/g)and OPFRs(6.30-310 ng/g)were detected,but at low levels compared to earlier reports.The levels of PAHs,PCHs,and OPFRs released from contami-nated soils into simulated gastrointestinal fluids ranged from 1.74％to 91.0％,2.51％to 39.6％,and 1.37％to 96.9％,respectively.Based on both spiked and unspiked samples,we found that the oral bioaccessibility of pollutants was correlated with their logKow and molecular weight,and the total organic carbon content and pH of soils.PAHs in 13 out of 38 contaminated soil samples posed potential high risks to children.When considering oral bioaccessibility,nine soils still posed potential risks,while the risks in the remaining soils became negligible.The contribution of this paper is that it corrects the health risk of soil-bound organic pollutants by detecting bioaccessibility in actual soils from different contaminated sites.
查看更多>>摘要：Endocrine-disrupting chemicals(EDCs)are compounds,either natural or man-made,that interfere with the normal functioning of the endocrine system.There is increasing evidence that exposure to EDCs can have profound adverse effects on reproduction,metabolic disor-ders,neurological alterations,and increased risk of hormone-dependent cancer.Stem cells(SCs)are integral to these pathological processes,and it is therefore crucial to understand how EDCs may influence SC functionality.This review examines the literature on different types of EDCs and their effects on various types of SCs,including embryonic,adult,and can-cer SCs.Possible molecular mechanisms through which EDCs may influence the phenotype of SCs are also evaluated.Finally,the possible implications of these effects on human health are discussed.The available literature demonstrates that EDCs can influence the biology of SCs in a variety of ways,including by altering hormonal pathways,DNA damage,epige-netic changes,reactive oxygen species production and alterations in the gene expression patterns.These disruptions may lead to a variety of cell fates and diseases later in adult-hood including increased risk of endocrine disorders,obesity,infertility,reproductive abnor-malities,and cancer.Therefore,the review emphasizes the importance of raising broader awareness regarding the intricate impact of EDCs on human health.
查看更多>>摘要：In this study,the effects of different salinity gradients and addition of compatible solutes on anaerobic treated effluent water qualities,sludge characteristics and microbial communi-ties were investigated.The increase in salinity resulted in a decrease in particle size of the granular sludge,which was concentrated in the range of 0.5-1.0 mm.The content of EPS(ex-tracellular polymeric substances)in the granular sludge gradually increased with increasing salinity and the addition of betaine(a typical compatible solute).Meanwhile,the micro-bial community structure was significantly affected by salinity,with high salinity reducing the diversity of bacteria.At higher salinity,Patescibacteria and Proteobacteria gradually be-came the dominant phylum,with relative abundance increasing to 13.53％and 12.16％at 20 g/L salinity.Desulfobacterota and its subordinate Desulfovibrio,which secrete EPS in large quantities,dominated significantly after betaine addition.Their relative abundance reached 13.65％and 7.86％at phylum level and genus level.The effect of these changes on the treated effluent was shown as the average chemical oxygen demand(COD)removal rate decreased from 82.10％to 79.71％,78.01％,68.51％and 64.55％when the salinity gradually increased from 2 g/L to 6,10,16 and 20 g/L.At the salinity of 20 g/L,average COD removal increased to 71.65％by the addition of 2 mmol/L betaine.The gradient elevated salinity and the ex-ogenous addition of betaine played an important role in achieving stability of the anaerobic system in a highly saline environment,which provided a feasible strategy for anaerobic treatment of organic saline wastewater.
查看更多>>摘要：To investigate the associations between isocarbophos and isofenphos with impaired fast-ing glucose(IFG)and type 2 diabetes mellitus(T2DM),and to assess the mediation roles of inflammation cells.There were 2701 participants in the case-control study,including 896 patients with T2DM,900 patients with IFG,905 subjects with NGT.Plasma isocarbophos and isofenphos concentrations were measured using gas chromatography and triple quadrupole tandem mass spectrometry.Generalized linear models were used to calculate the relation-ships between plasma isofenphos and isocarbophos levels with inflammatory factor levels and T2DM.Inflammatory cell was used as mediators to estimate the mediating effects on the above associations.Isocarbophos and isofenphos were positively related with T2DM af-ter adjusting for other factors.The odds ratio(95％confidence interval)(OR(95％CI))for T2DM was 1.041(1.015,1.068)and for IFG was 1.066(1.009,1.127)per unit rise in ln-isocarbophos.The prevalence of T2DM increased by 6.4％for every 1 unit more of ln-isofenphos(OR(95％CI):1.064(1.041,1.087)).Additionally,a 100％rise in ln-isocarbophos was linked to 3.3％higher ln-HOMA2IR and a 0.029 mmol/L higher glycosylated hemoglobin(HbA1c)(95％CI:0.007,0.051).While a 100％rise in ln-isofenphos was linked to increase in ln-HOMA2 and ln-HOMA2IR of 5.8％and 3.4％,respectively.Furthermore,white blood cell(WBC)and neu-trophilic(NE)were found to be mediators in the relationship between isocarbophos and T2DM,and the corresponding proportions were 17.12％and 17.67％,respectively.Isofenphos and isocarbophos are associated with IFG and T2DM in the rural Chinese population,WBC and NE have a significant role in this relationship.
查看更多>>摘要：Growing evidences showed that heavy metals exposure may be associated with metabolic diseases.Nevertheless,the mechanism underlying arsenic(As)exposure and metabolic syn-drome(MetS)risk has not been fully elucidated.So we aimed to prospectively investigate the role of serum uric acid(SUA)on the association between blood As exposure and incident MetS.A sample of 1045 older participants in a community in China was analyzed.We deter-mined As at baseline and SUA concentration at follow-up in the Yiwu Elderly Cohort.MetS events were defined according to the criteria of the International Diabetes Federation(IDF).Generalized linear model with log-binominal regression model was applied to estimate the association of As with incident MetS.To investigate the role of SUA in the association be-tween As and MetS,a mediation analysis was conducted.In the fully adjusted log-binominal model,per interquartile range increment of As,the risk of MetS increased 1.25-fold.Com-pared with the lowest quartile of As,the adjusted relative risk(RR)of MetS in the highest quartile was 1.42(95％confidence interval,CI:1.03,2.00).Additionally,blood As was posi-tively associated with SUA,while SUA had significant association with MetS risk.Further mediation analysis demonstrated that the association of As and MetS risk was mediated by SUA,with the proportion of 15.7％.Our study found higher As was remarkably associated with the elevated risk of MetS in the Chinese older adults population.Mediation analysis indicated that SUA might be a mediator in the association between As exposure and MetS.
查看更多>>摘要：Secondary iron-sulfate minerals such as jarosite,which are easily formed in acid mine drainage,play an important role in controlling metal mobility.In this work,the typical iron-oxidizing bacterium Acidithiobacillus ferrooxidans ATCC 23270 was selected to synthe-size jarosite in the presence of antimony ions,during which the solution behavior,synthetic product composition,and bacterial metabolism were studied.The results show that in the presence of Sb(Ⅴ),Fe2+was rapidly oxidized to Fe3+by A.ferrooxidans and Sb(Ⅴ)had no obvi-ous effect on the biooxidation of Fe2+under the current experimental conditions.The pres-ence of Sb(Ⅲ)inhibited bacterial growth and Fe2+oxidation.For the group with Sb(Ⅲ),prod-ucts with amorphous phases were formed 72 hr later,which were mainly ferrous sulfate and pentavalent antimony oxide,and the amorphous precursor was finally transformed into a more stable crystal phase.For the group with Sb(Ⅴ),the morphology and structure of jarosite were changed in comparison with those without Sb.The biomineralization process was ac-companied by the removal of 94％Sb(Ⅴ)to form jarosite containing the Fe-Sb-O complex.Comparative transcriptome analysis shows differential effects of Sb(Ⅲ)and Sb(Ⅴ)on bacte-rial metabolism.The expression levels of functional genes related to cell components were much more downregulated for the group with Sb(Ⅲ)but much more regulated for that with Sb(V).Notably,cytochrome c and nitrogen fixation-relevant genes for the A.f_Fe2+_Sb(Ⅲ)group were enhanced significantly,indicating their role in Sb(Ⅲ)resistance.This study is of great value for the development of antimony pollution control and remediation technology.
查看更多>>摘要：Agricultural practices significantly contribute to greenhouse gas(GHG)emissions,necessi-tating cleaner production technologies to reduce environmental pressure and achieve sus-tainable maize production.Plastic film mulching is commonly used in the Loess Plateau region.Incorporating slow-release fertilizers as a replacement for urea within this prac-tice can reduce nitrogen losses and enhance crop productivity.Combining these techniques represents a novel agricultural approach in semi-arid areas.However,the impact of this in-tegration on soil carbon storage(SOCs),carbon footprint(CF),and economic benefits has re-ceived limited research attention.Therefore,we conducted an eight-year study(2015-2022)in the semi-arid northwestern region to quantify the effects of four treatments[urea sup-plied without plastic film mulching(CK-U),slow-release fertilizer supplied without plastic film mulching(CK-S),urea supplied with plastic film mulching(PM-U),and slow-release fertilizer supplied with plastic film mulching(PM-S)]on soil fertility,economic and envi-ronmental benefits.The results revealed that nitrogen fertilizer was the primary contribu-tor to total GHG emissions(≥71.97％).Compared to other treatments,PM-S increased aver-age grain yield by 12.01％-37.89％,water use efficiency by 9.19％-23.33％,nitrogen accumu-lation by 27.07％-66.19％,and net return by 6.21％-29.57％.Furthermore,PM-S decreased CF by 12.87％-44.31％and CF per net return by 14.25％-41.16％.After eight years,PM-S increased SOCs(0-40 cm)by 2.46％,while PM-U decreased it by 7.09％.These findings highlight the positive effects of PM-S on surface soil fertility,economic gains,and environmental benefits in spring maize production on the Loess Plateau,underscoring its potential for widespread adoption and application.
查看更多>>摘要：TWo strains of Fe/Mn oxidizing bacteria tolerant to high concentrations of multiple heavy metal(loid)s and efficient decontamination for them were screened.The surface of the bio-Fe/Mn oxides produced by the oxidation of Fe(Ⅱ)and Mn(Ⅱ)by Pseudomonas taiwanensis(marked as P4)and Pseudomonas plecoglossicida(marked as G1)contains rich reactive oxygen functional groups,which play critical roles in the removal efficiency and immobilization of heavy metal(loid)s in co-contamination system.The isolated strains P4 and G1 can grow well in the following environments:pH 5-9,NaCl 0-4％,and temperature 20-30℃.The removal efficiencies of Fe,Pb,As,Zn,Cd,Cu,and Mn are effective after inoculation of the strains P4 and G1 in the simulated water system(the initial concentrations of heavy metal(loid)were 1 mg/L),approximately reaching 96％,92％,85％,67％,70％,54％and 15％,respectively.The exchangeable and carbonate bound As,Cd,Pb and Cu are more inclined to convert to the Fe-Mn oxide bound fractions in P4 and G1 treated soil,thereby reducing the phytoavailabil-ity and bioaccessible of heavy metal(loid)s.This research provides alternatives method to treat water and soil containing high concentrations of multi-heavy metal(loid)s.
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