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Deposition behavior of residual aluminum in drinking water distribution system：Effect of aluminum speciation

Journal of environmental sciences 2016年第4期28卷 142-151页

作者： Yue Zhang Baoyou shi Yuanyuan Zhao Mingquan Yan Darren A.Lytle Dongsheng Wang Key Laboratory of Drinking Water science and Technology Research Center for Eco-Environmental Sciences Chinese Academy of Sciences Beijing 100085 China. College of environmental sciences and Engineering Peking University Beijing 100871 China u.s. environmental protection agency Cincinnati OH 45268 USA

Finished drinking water usually contains some residual *** deposition of residual aluminum in distribution systems and potential release back to the drinking water could significantly influence the water quality at consumer taps.A preliminary analysis of aluminum content in cast iron pipe corrosion scales and loose deposits demonstrated that aluminum deposition on distribution pipe surfaces could be excessive for water treated by aluminum coagulants including polyaluminum chloride（PACl）.In this work,the deposition features of different aluminum species in PACl were investigated by simulated coil-pipe test,batch reactor test and quartz crystal microbalance with dissipation *** deposition amount of non-polymeric aluminum species was the least,and its deposition layer was soft and hydrated,which indicated the possible formation of amorphous Al（OH）***（13） had the highest deposition tendency,and the deposition layer was rigid and much less hydrated,which indicated that the deposited aluminum might possess regular structure and self-aggregation of Al（13）could be the main deposition *** for Al（30）,its deposition was relatively slower and deposited aluminum amount was relatively less compared with Al（13）.However,the total deposited mass of Al（30） was much higher than that of Al（13）,which was attributed to the deposition of particulate aluminum matters with much higher hydration *** with stationary condition,stirring could significantly enhance the deposition process,while the effect of pH on deposition was relatively weak in the near neutral range of 6.7 to 8.7.

关键词： Aluminum deposition Drinking water distribution system Polyaluminum chloride (PACl) Quartz crystal microbalance

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Treatability aspects of urban stormwater stressors

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Frontiers of environmental science & Engineering 2012年第5期6卷 631-637页

作者： Anthony N. TAFuRI Richard FIELD National Risk Management Research Laboratory Water Supply and Water Resources Division Urban Watershed Management Branch U.S. Environmental Protection Agency Edison NJ 08837-3679 USA

Pollution from diffuse sources （pollution from contaminants picked up and carried into surface waters by stormwater runoff） has been identified as a significant source of water quality problems in the u.s. scientists and engineers continue to seek solutions that will allow them to optimize existing technologies and develop new ones that will provide the best possible protection to people, wildlife, and the environment. This paper addresses the various pollutants or stressors in urban stormwater, including flow （shear force）, pathogens, suspended solids/sediment, toxicants （organic and metals）, nutrients, oxygen demanding substances, and coarse solids. A broad overview of the pollutants removed and the removal mechanisms by and of conventional best management practices （BMPs） is also presented. The principal treatment mechanisms of conventional wet ponds, vegetative swales/ buffer strips, and wetlands are sedimentation and filtration. These mechanisms have the capability to remove sig- nificant amounts of suspended solids or particulate matter and are a vital component of strategies to reduce pollutant loads to receiving waters. In addition, because most of the nation＇s receiving water violations are caused by pathogen indicator bacteria, it is of utmost importance that research efforts address this problem. Further research is also needed on the treatment of emerging contaminants in BMPs and on the costs and affects of maintenance and maintenance schedules on the long-term performance of BMPs.

关键词： stormwater wet weather flow urban runoff

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Genome-wide identification of yellow gene family in Hermetia illucens and functional analysis of yellow-y by CRIsPR/Cas9

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Insect science 2025年第1期32卷 115-126页

作者： Yongcheng Dong Xiaomiao Xu Lansa Qian Zongqing Kou Awawing A.Andongma Lijun Zhou Yongping Huang Yaohui Wang Key Laboratory of Biology and sustainable Management of Plant Diseases and Pests of Anhui Higher Education Insttutes College of Plant ProtectionAnhui Agricultural UniversityHefeiChina Chinese Academy of sciences(CAs)Key Laboratory of Insect Developmental and Evolutionary Biology CAS Center for Excellence in Molecular Plant SciencesCASShanghaiChina Insect and Parasite Ecology Group Lancaster Environment CentreLancaster UniversityLancasterUK school of environmental science and Engineering Shanghai Jiao Tong UniversityShanghaiChina

The yellow gene family plays a crucial role in insect *** has potential for use as a visible marker gene in genetic manipulation and transgenic engineering in several model and non-model ***,yellow genes have rarely been identified in stratiomyidae species and the functions of yellow genes are relatively *** the present study,we first manually annotated and curated 10 yellow genes in the black soldier fly(BsF),Hermetia illucens(stratiomyidae).Then,the conserved amino acids in the major royal jelly proteins(MRJPs)domain,structural architecture and phylogenetic relationship of yellow genes in BsF were *** found that the BsF yellow-y,yellow-c and yellow-f genes are expressed at all developmental stages,especially in the prepupal *** the clustered regularly interspaced short palindromic repeats(CRIsPR)/CRIsPR-associated protein 9(Cas9)system,we successfully disrupted yellow-y,yellow-c and yellow-f in the ***,the mutation of yellow-y clearly resulted in a pale-yellow body color in prepupae,pupae and adults,instead of the typical black body color of the wild ***,the mutation of yellow-c or yellow-f genes did not result in any change in color of the insects,when compared with the wild *** study indicates that the BsF yellow-y gene plays a role in body pigmentation,providing an optimal marker gene for the genetic manipulation of BsF.

关键词： CRIsPR-Cas9 Hermetia illucens pigmentation yellow family yellow-y

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Lysobacter enzymogenes:A fully armed biocontrol warrior

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Journal of Integrative Agriculture 2025年第1期24卷 23-35页

作者： Long Lin Xiaolong shao Yicheng Yang Aprodisia Kavutu Murero Limin Wang Gaoge Xu Yangyang Zhao sen Han Zhenhe su Kangwen Xu Mingming Yang Jinxing Liao Kaihuai Li Fengquan Liu Guoliang Qian Key Laboratory of Integrated Management of Crop Diseases and Pests/College of Plant protection Nanjing Agricultural UniversityNanjing210095China Institute of Plant protection Jiangsu Academy of Agricultural SciencesNanjing 210014China Integrated Pest Management Innovation Center of Hebei Province Plant Protection InstituteHebei Academy of Agriculture and ForestrySciencesBaoding 071000China Marine Agriculture Research Center Tobacco Research InstituteChinese Academy of Agricultural SciencesQingdao 266101China Collegeof Plant protection Northwest A&FUniversityYangling 712100China Hunan Provincial Key Laboratory for Biology and Control of Plant Diseases and Plant Pests College of Plant ProtectionHunan AgriculturalUniversityChangsha 410128China Department of Plant Pathology College of AgricultureGuizhou UniversityGuiyang 550025China

Lysobacter enzymogenes is less-studied, but emerging as a powerful biocontrol bacterium producing multiple antimicrobial weapons including lytic enzymes, toxins, secondary metabolites and protein secretion *** loss of surface-attached flagellum, production of heat-stable antifungal factor(HsAF, also named as Ningrongmycin) as a novel antifungal antibiotic, and the use of the type Ⅳ secretion system(T4ss) rather than the common type Ⅵ secretion system(T6ss) to kill competitor bacteria make this species unique. These distinct features set L. enzymogenes apart from well-studied plant beneficial biocontrol agents, such as Bacillus and Pseudomonas. This review describes what takes L. enzymogenes to be a unique biocontrol warrior by focusing to illustrate how the lack of flagellum governs morphological and functional co-adaptability, what adapted signaling transduction pathways are adopted to coordinate the biosynthesis of HsAF, and how to ecologically adapt plant rhizosphere by cell-to-cell interacting with microbiome members via the bacterial-killing T4ss.

关键词： Lysobacter enzymogenes antimicrobial metabolites loss of flagell typeⅣsecretion system

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Kinetics of the reaction of OH radical with ethylfluoroacetate,ethyl 4,4,4-trifluorobutyrate,and butylfluoroacetate

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Journal of environmental sciences 2025年第5期151卷 273-283页

作者： Pedro L.Lugo Vianni straccia Mariano A.Teruel María B.Blanco Laboratorio universitario de Química y Contaminación del Aire(L.u.Q.C.A) Institute for Research in Physical Chemistry of Córdoba(I.N.F.I.Q.C.)Department of Physical ChemistryFaculty of Chemical SciencesNational University of CórdobaUniversity CityCórdoba 5000Argentina Institute for Atmospheric and environmental Research University of WuppertalWuppertal DE-42097Germany

Kinetics of the gas-phase reactions of•OH radicals with a series of fluoroesters were studied for the first time at 298±3 K and atmospheric *** rate coefficients were determined by in situ FTIR spectroscopy in nitrogen and GC-FID in air to monitor the decay of reactants and *** following coefficient values(in 10^(−12)cm^(3)/(molecule•sec))were obtained for ethyl fluoroacetate(EFA),ethyl 4,4,4-trifluorobutyrate(ETB),and butyl fluoroacetate(BFA),respectively:k_(1)(EFA+OH)=1.15±0.25 by FTIR and 1.34±0.23 by GC-FID;k_(2)(ETB+OH)=1.61±0.36 by FTIR and 2.02±0.30 by GC-FID;k_(3)(BFA+OH)=2.24±0.37 by *** trends were developed and correlated with the number of CH_(3)and F substituents in the fluoroester,and structure-activity relationships(sARs)calculations were *** addition,the tropospheric lifetimes of EFA,ETB,and BFA upon degradation by OH radicals were calculated to be 9,6,and 5 days,respectively,indicating that these fluorinated compounds could have a possible regional effect from the emission *** small photochemical ozone creation potentials of 9,7,and 19 were estimated for EFA,ETB,and BFA,*** GlobalWarming Potentials(GWPs)for EFA,ETB,and BFA were calculated for different time *** a 20-year time horizon,the GWPs were 1.393,0.063,and 0.062,*** the case of a 100-year time horizon,the GWPs were 0.379,0.017,and 0.017,and for a 500-year time horizon,the GWPs were 0.108,0.005,and 0.005 for EFA,ETB,and BFA.

关键词： CFC replacements sinks in situ FTIR sAR Acidification potentials Greenhouse gases

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Legacies and health risks of heavy metals,polybrominated diphenyl ethers,and polychlorinated dibenzo-dioxins/furans at e-waste recycling sites in south China

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Frontiers of environmental science & Engineering 2023年第7期17卷 1-10页

作者： Xu Zhao Wei Li Wei Wang Jingjing Liu Yunjiang Yu Yang Li Xichao Chen Yun Liu state environmental protection Key Laboratory of environmental Pollution Health Risk Assessment South China Institute of Environmental SciencesMinistry of Environmental Protection of the People's Republic of ChinaGuangzhou 510655China

Informal electronic-waste(e-waste)recycling sites pose substantial health risks to surrounding environments and populations,yet they are not properly *** this study,the soil levels of copper,lead,cadmium,eight polybrominated diphenyl ethers(PBDEs),and 18 polychlorinated dibenzo-dioxins/furans(PCDD/Fs)were measured at two e-waste recycling sites in south China between 2014 and *** sites have been abandoned for natural *** results indicate that the mean Cd and PCDD/F levels at site A in 2019 were higher than those recommended by current safety ***,the highest exposure among children was 1.36×10^(−2)mg/(kg·d)for Cu,followed by 5.05×10^(−3)mg/(kg·d)for Pb,9.71 ng/(kg·d)for PBDEs,and 6.82 ng TEQ/(kg·d)for PCDD/*** were at elevated risk for health problem posed by Pb and Cu exposure at both sites(hazard quotient>1)and by PCDD/Fs at site *** risk assessment was conducted on the target organs and endpoints of heavy metals and PCDD/*** hazard index(HI)for the target organ mixed-risk of heavy metals was high(HI=1.27),as was that of PCDD/Fs(HI=1.66),which can disrupt endocrine function and pose a risk of reproductive toxicity in *** to incomplete cleaning,contaminants persist in soils over long periods and may harm nearby environments and *** study demonstrates that heavy metal,PBDE,and PCDD/F contamination have not yet been remediated,and intervention is needed to reduce pollution and associated risks in areas affected by e-waste.

关键词： E-waste Human health risk Organ risk Heavy metal toxicity PBDE PCDD/F

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综合环境管理——纸浆、造纸工业的中间试验研究

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世界环境 1988年第1期 7-10页

作者： Timothy M.Barry 戴进池袁亮 Regulatory Integration Division Office of Policy Analysis u.s.environmental protection agency.

我们对大多数化学品的慢性毒理学的认识和了解是很有限的。我们的数据大多来自短期对动物进行的高浓度生物鉴定试验,它们很难与长期的低浓度环境暴露联系起来。某些化学品(主要是致癌物)被认为在所有浓度下,不管其浓度如何低,对人类健... 详细信息

我们对大多数化学品的慢性毒理学的认识和了解是很有限的。我们的数据大多来自短期对动物进行的高浓度生物鉴定试验,它们很难与长期的低浓度环境暴露联系起来。某些化学品(主要是致癌物)被认为在所有浓度下,不管其浓度如何低,对人类健康都有害。许多有毒化学品都是有用的,但它们的“毒性循环”的每一阶段(制造、加工、利用和处置)对健康和环境又都存在潜在的危害。有毒化学品从一个环境介质转移到另一个环境介质(例如,从空气到水)的时候,常常保持它们的毒性。这

关键词：造纸工业污染控制造纸业效应评价经济效益暴露评价有毒化学品中间试验半工业试验

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Long-term monitoring of active large-scale landslides for non-structural risk mitigation-integrated sensors and web-based platform

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Journal of Mountain science 2025年第1期22卷 1-15页

作者： CATELAN Filippo Tommaso BOssI Giulia sCHENATO Luca TONDO Melissa CRITELLI Vincenzo MuLAs Marco CICCAREsE Giuseppe CORsINI Alessandro TONIDANDEL David MAIR Volkmar MARCATO Gianluca Research Institute for Geo-Hydrological protection(IRPI) National Research Council(CNR)Padova 35127Italy Department of Chemical and Geological sciences University of Modena and Reggio EmiliaModena 41125Italy Department of Information Engineering University of PadovaPadova 35131Italy Department of Biological Geological and Environmental SciencesUniversity of BolognaBologna 67-40126Italy Office for Geology and Building Materials Testing Autonomous Province of BolzanoCardano 39053Italy

Large-scale deep-seated landslides pose a significant threat to human life and ***,closely monitoring these landslides is crucial for assessing and mitigating their associated *** this paper,the authors introduce the so Lo Mon framework,a comprehensive monitoring system developed for three large-scale landslides in the Autonomous Province of Bolzano,Italy.A web-based platform integrates various monitoring data(GNss,topographic data,in-place inclinometer),providing a user-friendly interface for visualizing and analyzing the collected *** facilitates the identification of trends and patterns in landslide behaviour,enabling the triggering of warnings and the implementation of appropriate mitigation *** so Lo Mon platform has proven to be an invaluable tool for managing the risks associated with large-scale landslides through non-structural measures and driving countermeasure works *** serves as a centralized data repository,offering visualization and analysis *** information empowers decisionmakers to make informed choices regarding risk mitigation,ultimately ensuring the safety of communities and infrastructures.

关键词： Web-based platform south Tyrol landslides Long term monitoring Risk mitigation

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Characteristics and environmental significance of rare earth elements in PM2.5 of Nanchang, China

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Journal of Rare Earths 2017年第1期35卷 98-106页

作者： ZHAO Yang Yu Ruilian Hu Gongren LIN Xiaohui LIu Xianrong College of Chemical Engineering Huaqiao University Xiamen 361021 China environmental protection agency.of Nanchang City Nanchang 330038 China

Concentrations of sixteen rare earth elements（REEs） in PM2.5 and potential-source samples, collected in Nanchang city in mid-september 2013, were determined by inductively coupled plasma mass spectrometry（ICP-Ms）. The results showed that the concentrations of total REEs（ΣREE） ranged from 78.76 to 1351 ng/mg. The order of REEs in PM2.5 samples showed the anthropogenic effects, Ce and Eu were affected more than the other REEs according to the enrichment factors. The results of chondrite-normalized REEs patterns and characteristic parameters showed evident light REEs fractionation, and positive anomalies of Ce and Eu in PM2.5. The other non-local pollution sources affected the PM2.5 samples, according to the triangular diagram of La, Ce and sm compositions and plot of ΣREE vs δEu. Moreover, plot of（La/sm）N vs（Gd/Yb）N revealed the effects of local sources. In conclusion, the REEs in potential-source samples were close to the background of local soil, while the REEs in PM2.5 samples in Nanchang city were jointly affected by the investigated local sources and other non-local sources.

关键词： PM2.5 rare earth elements composition characteristics distribution pattern enrichment factor

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Chemical characteristics and Pb isotopic compositions of PM2.5 in Nanchang, China

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Particuology 2017年第3期15卷 95-102页

作者： Yang Zhao Ruilian Yu Gongren Hu Xiaohui Lin Xianrong Liu College of Chemical Engineering Huoqiao University Xiamen 361021 China environmental protection agency.of Nanchang City Nanchang 330038 China

In mid-september 2013, PM2.5 samples were collected at six sites in Nanchang, Jiangxi Province, China, to quantify nine water-soluble ions （Ca2＋, Mg2＋, K＋, Na＋, NH4＋, sO42-, Cl-, F , NO3 ）, 29 trace elements （Ba, Zn, Pb, Ni, Mo, Cr, Cu, sr, sb, Rb, Cd, Bi, Zr, V, Ga, Li, Y, Nb, W, Cs, Tl, sc, Co, u, Hf, In, Re, Be, and Ta）, and to characterize Pb isotopic ratios （^207pb/^206pb, ^208pb/^206pb, and ^207pb/^204pb） for identifying the main source（s） of Pb. The results showed that the average daily PM2.5 concentration （53.16 ± 24.17） Dg/m3 was within the secondary level of the Chinese ambient air quality standard. The combined concentrations of sO42-, NH4＋, and NO3- to total measured water-soluble ion concentrations in PM2.5 ranged from 79.40% to 95.18%, indicating that anthropogenic sources were significant. Coal combustion and vehicle emissions were both contributors to PM2.5 based on the NO3-/sO4^2- ratios. Wushu school experienced the lowest concentrations of PM2.s and most trace elements among the six sampling sites. Enrichment factor results showed that TI, Cr, In, Cu, Zn, Pb, Bi, Ni, sb, and Cd in PM2.5 were affected by anthropogenic activities. Cluster analysis suggested that Cd, sb, Pb, Re, Zn, Bi, Cs, Tl, Ga, and In were possibly related to coal combustion and vehicle exhaust, while Ni, Nb, Cr, and Mo may have originated from metal smelting. Pb isotopic tracing showed that coal dust, cement dust, road dust and construction dust were the major Pb sources in PM2.5 in Nanchang. Combined, these sources contributed an average of 72.51% of the Pb measured, while vehicle exhaust accounted for 27.49% of Pb based on results from a binary Pb isotope mixed model,

关键词： PMzs Water-soluble ions Trace elements Pb isotopic composition Nanchang

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