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Pesquisa : D01.139.300.050 [Categoria DeCS]
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  1 / 4418 MEDLINE  
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[PMID]:29293600
[Au] Autor:Selim T; Bouksila F; Hamed Y; Berndtsson R; Bahri A; Persson M
[Ad] Endereço:Civil Engineering Department, Faculty of Engineering, Port Said University, Port Said, Egypt.
[Ti] Título:Field experiment and numerical simulation of point source irrigation with multiple tracers.
[So] Source:PLoS One;13(1):e0190500, 2018.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Dyes like Brilliant Blue have similar adsorptive behaviour as some organic contaminants, e.g., pesticides. Bromide ions, on the other hand, move much like NO3-N (fertilizer) in soil. Consequently, by using these two tracers, it is possible to in a general way mimic how organic contaminants and fertilizers may move through soils. Three plots with sandy soil in semiarid Tunisia were irrigated during three successive hours using a single irrigation dripper and high-saline solution (10.50 dS m-1) containing dye and bromide. Fifteen hours after cease of infiltration, horizontal 5 cm trenches were dug in the soil and dye pattern, bromide concentration, and soil water content were recorded. Preferential flow occurred to some degree, however, it did not dominate the solute transport process. Therefore, drip irrigation can be recommended to improve plant culture for a better water and soil nutrient adsorption. Numerical simulation using HYDRUS-2D/3D was performed to replicate the field experiments. Observed soil water contents before and after infiltration were used to run an inverse parameter estimation procedure to identify soil hydraulic parameters. It was found that for both field experiments and numerical simulations the mobility of bromide is different from the mobility of dye. The dye was retarded approximately twice by volume as compared to bromide. The simulation results support the use of HYDRUS-2D/3D as a rapid and labor saving tool for investigating tracers' mobility in sandy soil under point source irrigation.
[Mh] Termos MeSH primário: Irrigação Agrícola
Solo
[Mh] Termos MeSH secundário: Adsorção
Brometos
Corantes
Tunísia
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Bromides); 0 (Coloring Agents); 0 (Soil)
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180221
[Lr] Data última revisão:
180221
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:180103
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0190500


  2 / 4418 MEDLINE  
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[PMID]:29406118
[Au] Autor:Zhang X; Wang C; Yu C; Teng B; He Y; Zhao L; Fan M
[Ad] Endereço:College of Chemistry and Life Sciences, Zhejiang Normal University, Jinhua 321004, China.
[Ti] Título:Application of Ag/AgBr/GdVO composite photocatalyst in wastewater treatment.
[So] Source:J Environ Sci (China);63:68-75, 2018 Jan.
[Is] ISSN:1001-0742
[Cp] País de publicação:Netherlands
[La] Idioma:eng
[Ab] Resumo:Ag/AgBr/GdVO composite photocatalysts were designed and synthesized in this paper. The physical and chemical structures, as well as optical properties of the synthesized composite were investigated via XRD, XPS, TEM, and UV-vis. It is found that the composite showed a ternary heterojunction structure of Ag, AgBr and GdVO . Meanwhile, it has a high intensity of light current, indicating its high separation efficiency of electron and hole. Photocatalytic oxidation of rhodamine B (RhB) under visible light irradiation was performed to investigate the activity of the Ag/AgBr/GdVO composite. Result indicates that it shows excellent photocatalytic activity. Under visible light irradiation for 12min, about 80% of RhB (30µmol/L) was degraded. The degradation rate is estimated to be 0.253 min-1, which is three times higher than that of pure AgBr. The high photoactivity can be ascribed to the synergetic effect of AgBr, GdVO , and Ag nanoparticle in separation of electron-hole pairs.
[Mh] Termos MeSH primário: Processos Fotoquímicos
Eliminação de Resíduos Líquidos/métodos
Poluentes Químicos da Água/química
[Mh] Termos MeSH secundário: Brometos/química
Gadolínio/química
Nanopartículas
Oxirredução
Rodaminas/química
Prata/química
Compostos de Prata/química
Vanadatos/química
Águas Residuais/química
Poluentes Químicos da Água/análise
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Bromides); 0 (Rhodamines); 0 (Silver Compounds); 0 (Waste Water); 0 (Water Pollutants, Chemical); 3M4G523W1G (Silver); 3WHH0066W5 (Vanadates); AU0V1LM3JT (Gadolinium); K7G5SCF8IL (rhodamine B); NHQ37BJZ2Z (silver bromide)
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180216
[Lr] Data última revisão:
180216
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:180207
[St] Status:MEDLINE


  3 / 4418 MEDLINE  
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[PMID]:29121564
[Au] Autor:Zhang C; Wang J; Dong M; Wang J; Du Z; Li B; Zhu L
[Ad] Endereço:College of Resources and Environment, Key Laboratory of Agricultural Environment in Universities of Shandong, Shandong Agriculture University, Taian, 271018, PR China.
[Ti] Título:Effect of 1-methyl-3-hexylimidazolium bromide on zebrafish (Danio rerio).
[So] Source:Chemosphere;192:348-353, 2018 Feb.
[Is] ISSN:1879-1298
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Room-temperature ionic liquids, generally referred to ionic liquids (ILs), are "green solvents". Antioxidant responses and DNA damage in zebrafish livers exposed to 1-methyl-3-hexylimidazolium bromide ([C mim]Br) were evaluated at various doses (5-40 mg/L) for a 28-day IL-exposure. A significant decrease of superoxide dismutase (SOD) activity was exhibited, and catalase (CAT) was inhibited at the highest dose (40 mg/L). Reactive oxygen species (ROS) levels were significantly promoted at most exposure interval times except for the dose of 5 mg/L on day 21 in male and days 21 and 28 in female. Malonaldehyde (MDA) contents remarkable increased exposed to [C mim]Br. Besides, a notable increase was exhibited, which indicated an inducement of DNA damage with respect to control groups. Thus, we believed that [C mim]Br causes oxidative stress and DNA damage in zebrafish. Gender differences were insignificant in almost all the tested biomarkers, thus, male and female zebrafish could be mixed at a ratio of 1:1 in the future evaluation. The present study may also provide basic toxicology information for IL evaluation to aquatic organisms.
[Mh] Termos MeSH primário: Brometos/toxicidade
Imidazóis/toxicidade
[Mh] Termos MeSH secundário: Animais
Antioxidantes/metabolismo
Catalase/metabolismo
Dano ao DNA/efeitos dos fármacos
Feminino
Líquidos Iônicos/metabolismo
Líquidos Iônicos/farmacologia
Fígado/metabolismo
Fígado/patologia
Masculino
Malondialdeído/metabolismo
Oxirredução/efeitos dos fármacos
Estresse Oxidativo/efeitos dos fármacos
Espécies Reativas de Oxigênio/metabolismo
Superóxido Dismutase/metabolismo
Poluentes Químicos da Água/farmacologia
Peixe-Zebra/metabolismo
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Antioxidants); 0 (Bromides); 0 (Imidazoles); 0 (Ionic Liquids); 0 (Reactive Oxygen Species); 0 (Water Pollutants, Chemical); 4Y8F71G49Q (Malondialdehyde); EC 1.11.1.6 (Catalase); EC 1.15.1.1 (Superoxide Dismutase)
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180212
[Lr] Data última revisão:
180212
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171110
[St] Status:MEDLINE


  4 / 4418 MEDLINE  
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[PMID]:28873450
[Au] Autor:Yokota T; Omachi K; Suico MA; Kojima H; Kamura M; Teramoto K; Kaseda S; Kuwazuru J; Shuto T; Kai H
[Ad] Endereço:Department of Molecular Medicine, Graduate School of Pharmaceutical Sciences, Kumamoto University, 5-1 Oe-honmachi, Chuo-ku, Kumamoto City, Kumamoto, Japan.
[Ti] Título:Bromide supplementation exacerbated the renal dysfunction, injury and fibrosis in a mouse model of Alport syndrome.
[So] Source:PLoS One;12(9):e0183959, 2017.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:A seminal study recently demonstrated that bromide (Br-) has a critical function in the assembly of type IV collagen in basement membrane (BM), and suggested that Br- supplementation has therapeutic potential for BM diseases. Because salts of bromide (KBr and NaBr) have been used as antiepileptic drugs for several decades, repositioning of Br- for BM diseases is probable. However, the effects of Br- on glomerular basement membrane (GBM) disease such as Alport syndrome (AS) and its impact on the kidney are still unknown. In this study, we administered daily for 16 weeks 75 mg/kg or 250 mg/kg (within clinical dosage) NaBr or NaCl (control) via drinking water to 6-week-old AS mice (mouse model of X-linked AS). Treatment with 75 mg/kg NaBr had no effect on AS progression. Surprisingly, compared with 250 mg/kg NaCl, 250 mg/kg NaBr exacerbated the progressive proteinuria and increased the serum creatinine and blood urea nitrogen in AS mice. Histological analysis revealed that glomerular injury, renal inflammation and fibrosis were exacerbated in mice treated with 250 mg/kg NaBr compared with NaCl. The expressions of renal injury markers (Lcn2, Lysozyme), matrix metalloproteinase (Mmp-12), pro-inflammatory cytokines (Il-6, Il-8, Tnf-α, Il-1ß) and pro-fibrotic genes (Tgf-ß, Col1a1, α-Sma) were also exacerbated by 250 mg/kg NaBr treatment. Notably, the exacerbating effects of Br- were not observed in wild-type mice. These findings suggest that Br- supplementation needs to be carefully evaluated for real positive health benefits and for the absence of adverse side effects especially in GBM diseases such as AS.
[Mh] Termos MeSH primário: Brometos/efeitos adversos
Nefropatias/metabolismo
Cirrose Hepática
Nefrite Hereditária/metabolismo
[Mh] Termos MeSH secundário: Animais
Nitrogênio da Ureia Sanguínea
Brometos/farmacologia
Creatinina/sangue
Modelos Animais de Doenças
Membrana Basal Glomerular/patologia
Rim/metabolismo
Masculino
Camundongos
Camundongos Endogâmicos C57BL
Nefrite/patologia
Nitrogênio/sangue
Compostos de Potássio/efeitos adversos
Compostos de Potássio/farmacologia
Proteinúria/metabolismo
Compostos de Sódio/efeitos adversos
Compostos de Sódio/farmacologia
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Bromides); 0 (Potassium Compounds); 0 (Sodium Compounds); AYI8EX34EU (Creatinine); LC1V549NOM (sodium bromide); N762921K75 (Nitrogen); OSD78555ZM (potassium bromide)
[Em] Mês de entrada:1710
[Cu] Atualização por classe:171025
[Lr] Data última revisão:
171025
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170906
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0183959


  5 / 4418 MEDLINE  
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[PMID]:28774625
[Au] Autor:Langsa M; Allard S; Kristiana I; Heitz A; Joll CA
[Ad] Endereço:Curtin Water Quality Research Centre, Department of Chemistry, Curtin University, Perth, Western Australia 6102, Australia; Jurusan Kimia, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Papua, Manokwari, Papua Barat 98314, Indonesia.
[Ti] Título:Halogen-specific total organic halogen analysis: Assessment by recovery of total bromine.
[So] Source:J Environ Sci (China);58:340-348, 2017 Aug.
[Is] ISSN:1001-0742
[Cp] País de publicação:Netherlands
[La] Idioma:eng
[Ab] Resumo:Determination of halogen-specific total organic halogen (TOX) is vital for studies of disinfection of waters containing bromide, since total organic bromine (TOBr) is likely to be more problematic than total organic chlorine. Here, we present further halogen-specific TOX method optimisation and validation, focusing on measurement of TOBr. The optimised halogen-specific TOX method was validated based on the recovery of model compounds covering different classes of disinfection by-products (haloacetic acids, haloacetonitriles, halophenols and halogenated benzenes) and the recovery of total bromine (mass balance of TOBr and bromide concentrations) during disinfection of waters containing dissolved organic matter and bromide. The validation of a halogen-specific TOX method based on the mass balance of total bromine has not previously been reported. Very good recoveries of organic halogen from all model compounds were obtained, indicating high or complete conversion of all organic halogen in the model compound solution through to halide in the absorber solution for ion chromatography analysis. The method was also successfully applied to monitor conversion of bromide to TOBr in a groundwater treatment plant. An excellent recovery (101%) of total bromine was observed from the raw water to the post-chlorination stage. Excellent recoveries of total bromine (92%-95%) were also obtained from chlorination of a synthetic water containing dissolved organic matter and bromide, demonstrating the validity of the halogen-specific TOX method for TOBr measurement. The halogen-specific TOX method is an important tool to monitor and better understand the formation of halogenated organic compounds, in particular brominated organic compounds, in drinking water systems.
[Mh] Termos MeSH primário: Bromo/análise
Poluentes Químicos da Água/análise
[Mh] Termos MeSH secundário: Brometos
Desinfetantes/análise
Desinfecção/métodos
Halogênios/análise
Compostos Orgânicos/análise
Purificação da Água/métodos
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Bromides); 0 (Disinfectants); 0 (Halogens); 0 (Organic Chemicals); 0 (Water Pollutants, Chemical); SBV4XY874G (Bromine)
[Em] Mês de entrada:1708
[Cu] Atualização por classe:170811
[Lr] Data última revisão:
170811
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170805
[St] Status:MEDLINE


  6 / 4418 MEDLINE  
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[PMID]:28774623
[Au] Autor:Zhang Y; Chu W; Yao D; Yin D
[Ad] Endereço:Key Laboratory of Yangtze River Water Environment, Ministry of Education, State Key Laboratory of Pollution Control and Resources Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China.
[Ti] Título:Control of aliphatic halogenated DBP precursors with multiple drinking water treatment processes: Formation potential and integrated toxicity.
[So] Source:J Environ Sci (China);58:322-330, 2017 Aug.
[Is] ISSN:1001-0742
[Cp] País de publicação:Netherlands
[La] Idioma:eng
[Ab] Resumo:The comprehensive control efficiency for the formation potentials (FPs) of a range of regulated and unregulated halogenated disinfection by-products (DBPs) (including carbonaceous DBPs (C-DBPs), nitrogenous DBPs (N-DBPs), and iodinated DBPs (I-DBPs)) with the multiple drinking water treatment processes, including pre-ozonation, conventional treatment (coagulation-sedimentation, pre-sand filtration), ozone-biological activated carbon (O -BAC) advanced treatment, and post-sand filtration, was investigated. The potential toxic risks of DBPs by combing their FPs and toxicity values were also evaluated. The results showed that the multiple drinking water treatment processes had superior performance in removing organic/inorganic precursors and reducing the formation of a range of halogenated DBPs. Therein, ozonation significantly removed bromide and iodide, and thus reduced the formation of brominated and iodinated DBPs. The removal of organic carbon and nitrogen precursors by the conventional treatment processes was substantially improved by O -BAC advanced treatment, and thus prevented the formation of chlorinated C-DBPs and N-DBPs. However, BAC filtration leads to the increased formation of brominated C-DBPs and N-DBPs due to the increase of bromide/DOC and bromide/DON. After the whole multiple treatment processes, the rank order for integrated toxic risk values caused by these halogenated DBPs was haloacetonitriles (HANs)≫haloacetamides (HAMs)>haloacetic acids (HAAs)>trihalomethanes (THMs)>halonitromethanes (HNMs)≫I-DBPs (I-HAMs and I-THMs). I-DBPs failed to cause high integrated toxic risk because of their very low FPs. The significant higher integrated toxic risk value caused by HANs than other halogenated DBPs cannot be ignored.
[Mh] Termos MeSH primário: Desinfetantes/análise
Poluentes Químicos da Água/análise
Purificação da Água/métodos
[Mh] Termos MeSH secundário: Brometos
Carvão Vegetal
Cloro
Desinfetantes/toxicidade
Desinfecção
Água Potável
Filtração
Nitrogênio
Ozônio
Poluentes Químicos da Água/toxicidade
Abastecimento de Água
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Bromides); 0 (Disinfectants); 0 (Drinking Water); 0 (Water Pollutants, Chemical); 16291-96-6 (Charcoal); 4R7X1O2820 (Chlorine); 66H7ZZK23N (Ozone); N762921K75 (Nitrogen)
[Em] Mês de entrada:1708
[Cu] Atualização por classe:170811
[Lr] Data última revisão:
170811
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170805
[St] Status:MEDLINE


  7 / 4418 MEDLINE  
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[PMID]:28774620
[Au] Autor:Dong S; Nguyen TH; Plewa MJ
[Ad] Endereço:Department of Civil and Environmental Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA; Safe Global Water Institute, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA. Electronic address: sdong6@illinois.edu.
[Ti] Título:Comparative mammalian cell cytotoxicity of wastewater with elevated bromide and iodide after chlorination, chloramination, or ozonation.
[So] Source:J Environ Sci (China);58:296-301, 2017 Aug.
[Is] ISSN:1001-0742
[Cp] País de publicação:Netherlands
[La] Idioma:eng
[Ab] Resumo:Recycling wastewater is becoming more common as communities around the world try to better control their water resources against an increased frequency of either prolonged droughts or intense flooding. For communities in coastal areas, wastewaters may contain elevated levels of bromide (Br ) and iodide (I ) from seawater intrusion or high mineral content of source waters. Disinfection of such wastewater is mandatory to prevent the spread of pathogens, however little is known about the toxicity of wastewater after disinfection in the presence of Br and I . In this study we compared the induction of chronic cytotoxicity in mammalian cells in samples of municipal secondary wastewater effluent amended with elevated levels of Br /I after disinfection by chlorine, chloramines or ozone to identify which disinfection process generated wastewater with the lowest level of adverse biological response. Chlorination increased mammalian cell cytotoxicity by 5 times as compared to non-disinfected controls. Chloramination produced disinfected wastewater that expressed 6.3 times more cytotoxicity than the non-disinfected controls and was 1.3 times more cytotoxic than the chlorinated samples. Ozonation produced wastewater with cytotoxicity comparable to the non-disinfected controls and was at least 4 times less cytotoxic than the chlorine disinfected wastewaters. These results indicate that compared to chlorination and chloramination, ozonation of wastewater with high Br /I levels yielded the lowest mammalian cell cytotoxicity, suggesting its potential as a more favorable method to disinfect wastewater with minimizing the biological toxicity in mind.
[Mh] Termos MeSH primário: Águas Residuais/toxicidade
Poluentes Químicos da Água/toxicidade
[Mh] Termos MeSH secundário: Animais
Brometos/toxicidade
Cloraminas/toxicidade
Desinfetantes/toxicidade
Desinfecção/métodos
Halogenação
Iodetos/toxicidade
Ozônio/toxicidade
Purificação da Água/métodos
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Bromides); 0 (Chloramines); 0 (Disinfectants); 0 (Iodides); 0 (Waste Water); 0 (Water Pollutants, Chemical); 66H7ZZK23N (Ozone)
[Em] Mês de entrada:1708
[Cu] Atualização por classe:170811
[Lr] Data última revisão:
170811
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170805
[St] Status:MEDLINE


  8 / 4418 MEDLINE  
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[PMID]:28774609
[Au] Autor:Kolb C; Francis RA; VanBriesen JM
[Ad] Endereço:Department of Civil and Environmental Engineering, Carnegie Mellon University, Pittsburgh, PA 15213, USA. Electronic address: ckolb@cmu.edu.
[Ti] Título:Disinfection byproduct regulatory compliance surrogates and bromide-associated risk.
[So] Source:J Environ Sci (China);58:191-207, 2017 Aug.
[Is] ISSN:1001-0742
[Cp] País de publicação:Netherlands
[La] Idioma:eng
[Ab] Resumo:Natural and anthropogenic factors can alter bromide concentrations in drinking water sources. Increasing source water bromide concentrations increases the formation and alters the speciation of disinfection byproducts (DBPs) formed during drinking water treatment. Brominated DBPs are more toxic than their chlorinated analogs, and thus have a greater impact on human health. However, DBPs are regulated based on the mass sum of DBPs within a given class (e.g., trihalomethanes and haloacetic acids), not based on species-specific risk or extent of bromine incorporation. The regulated surrogate measures are intended to protect against not only the species they directly represent, but also against unregulated DBPs that are not routinely measured. Surrogates that do not incorporate effects of increasing bromide may not adequately capture human health risk associated with drinking water when source water bromide is elevated. The present study analyzes trihalomethanes (THMs), measured as TTHM, with varying source water bromide concentrations, and assesses its correlation with brominated THM, TTHM risk and species-specific THM concentrations and associated risk. Alternative potential surrogates are evaluated to assess their ability to capture THM risk under different source water bromide concentration conditions. The results of the present study indicate that TTHM does not adequately capture risk of the regulated species when source water bromide concentrations are elevated, and thus would also likely be an inadequate surrogate for many unregulated brominated species. Alternative surrogate measures, including THM and the bromodichloromethane concentration, are more robust surrogates for species-specific THM risk at varying source water bromide concentrations.
[Mh] Termos MeSH primário: Brometos/análise
Desinfetantes/análise
Poluentes Químicos da Água/análise
Poluição Química da Água/legislação & jurisprudência
Purificação da Água/métodos
[Mh] Termos MeSH secundário: Desinfecção
Halogenação
Seres Humanos
Risco
Poluição Química da Água/estatística & dados numéricos
Purificação da Água/legislação & jurisprudência
Abastecimento de Água
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Bromides); 0 (Disinfectants); 0 (Water Pollutants, Chemical)
[Em] Mês de entrada:1708
[Cu] Atualização por classe:170811
[Lr] Data última revisão:
170811
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170805
[St] Status:MEDLINE


  9 / 4418 MEDLINE  
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[PMID]:28774599
[Au] Autor:Kristiana I; Liew D; Henderson RK; Joll CA; Linge KL
[Ad] Endereço:Curtin Water Quality Research Centre, Department of Chemistry, Curtin University, Perth, Western Australia 6102, Australia. Electronic address: I.Kristiana@curtin.edu.au.
[Ti] Título:Formation and control of nitrogenous DBPs from Western Australian source waters: Investigating the impacts of high nitrogen and bromide concentrations.
[So] Source:J Environ Sci (China);58:102-115, 2017 Aug.
[Is] ISSN:1001-0742
[Cp] País de publicação:Netherlands
[La] Idioma:eng
[Ab] Resumo:We studied the formation of four nitrogenous DBPs (N-DBPs) classes (haloacetonitriles, halonitromethanes, haloacetamides, and N-nitrosamines), as well as trihalomethanes and total organic halogen (TOX), after chlorination or chloramination of source waters. We also evaluated the relative and additive toxicity of N-DBPs and water treatment options for minimisation of N-DBPs. The formation of halonitromethanes, haloacetamides, and N-nitrosamines was higher after chloramination and positively correlated with dissolved organic nitrogen or total nitrogen. N-DBPs were major contributors to the toxicity of both chlorinated and chloraminated waters. The strong correlation between bromide concentration and the overall calculated DBP additive toxicity for both chlorinated and chloraminated source waters demonstrated that formation of brominated haloacetonitriles was the main contributor to toxicity. Ozone-biological activated carbon treatment was not effective in removing N-DBP precursors. The occurrence and formation of N-DBPs should be investigated on a case-by-case basis, especially where advanced water treatment processes are being considered to minimise their formation in drinking waters, and where chloramination is used for final disinfection.
[Mh] Termos MeSH primário: Brometos/análise
Desinfetantes/análise
Compostos de Nitrogênio/análise
Poluentes Químicos da Água/análise
Poluição Química da Água/prevenção & controle
[Mh] Termos MeSH secundário: Austrália
Desinfecção
Halogenação
Trialometanos/análise
Purificação da Água
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Bromides); 0 (Disinfectants); 0 (Nitrogen Compounds); 0 (Trihalomethanes); 0 (Water Pollutants, Chemical)
[Em] Mês de entrada:1708
[Cu] Atualização por classe:170811
[Lr] Data última revisão:
170811
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170805
[St] Status:MEDLINE


  10 / 4418 MEDLINE  
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[PMID]:28766308
[Au] Autor:Dursun I; De Bastiani M; Turedi B; Alamer B; Shkurenko A; Yin J; El-Zohry AM; Gereige I; AlSaggaf A; Mohammed OF; Eddaoudi M; Bakr OM
[Ad] Endereço:KAUST Solar Center, KSC), Division of Physical Sciences and Engineering, PSE), King Abdullah University of Science and Technology, KAUST), Thuwal, 23955-6900, Saudi Arabia.
[Ti] Título:CsPb Br Single Crystals: Synthesis and Characterization.
[So] Source:ChemSusChem;10(19):3746-3749, 2017 Oct 09.
[Is] ISSN:1864-564X
[Cp] País de publicação:Germany
[La] Idioma:eng
[Ab] Resumo:CsPb Br is a ternary halogen-plumbate material with close characteristics to the well-reported halide perovskites. Owing to its unconventional two-dimensional structure, CsPb Br is being looked at broadly for potential applications in optoelectronics. CsPb Br investigations are currently limited to nanostructures and powder forms of the material, which present unclear and conflicting optical properties. In this study, we present the synthesis and characterization of CsPb Br bulk single crystals, which enabled us to finally clarify the material's optical features. Our CsPb Br crystal has a two-dimensional structure with Pb Br layers spaced by Cs cations, and exhibits approximately 3.1 eV indirect band gap with no emission in the visible spectrum.
[Mh] Termos MeSH primário: Brometos/química
Brometos/síntese química
Chumbo/química
[Mh] Termos MeSH secundário: Técnicas de Química Sintética
Cristalografia por Raios X
Modelos Moleculares
Conformação Molecular
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Bromides); 2P299V784P (Lead)
[Em] Mês de entrada:1711
[Cu] Atualização por classe:171106
[Lr] Data última revisão:
171106
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170803
[St] Status:MEDLINE
[do] DOI:10.1002/cssc.201701131



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