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Insight into fluorescence properties of 14 selected toxic single-ring aromatic compounds in water: Experimental

Muhammad Farooq Saleem Khan, Jing Wu, Cheng Cheng, Mona Akbar, Chuanyang Liu, Bo Liu, Jian Shen, Yu Xin

Frontiers of Environmental Science & Engineering 2020, Volume 14, Issue 3, doi: 10.1007/s11783-020-1219-z

Abstract: The fluorescence peak location of 14 compounds interpreted at protein-like region.The p-electron system inside aromatic ring contributes to the fluorophore region.Various single-ring aromatic compounds in water sources are of great concern due to its hazardous impactThis study provides a detailed insight into the fluorescence properties of the 14 selected toxic single-ringaromatic compounds by experimental and theoretical analysis.

Keywords： Fluorescence     Photophysical properties     Effect of the substituent     Toxic aromatic compounds    

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Impact and inhibitory mechanism of phenolic compounds on the formation of toxic Maillard reaction products

Jing TENG, Xiaoqian HU, Ningping TAO, Mingfu WANG

Frontiers of Agricultural Science and Engineering 2018, Volume 5, Issue 3,   Pages 321-329 doi: 10.15302/J-FASE-2017182

Abstract: treatment of food, the Maillard reaction not only leads to the formation of aroma, browning color and taste compounds, but also contributes to the formation of some unpleasant toxic substances including acrylamide, heterocyclicscavenge free radicals, but also react with reactive carbonyl species, thus lowering the formation of toxicsuggests some directions for further study of natural products as inhibitors against the formation of toxic

Keywords： advanced glycation end products     acrylamide     food safety     heterocyclic amine     Maillard reaction     polyphenols    

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Bioremediation of highly contaminated oilfield soil: Bioaugmentation for enhancing aromatic compounds

Jun QIAO, Chengdong ZHANG, Shuiming LUO, Wei CHEN

Frontiers of Environmental Science & Engineering 2014, Volume 8, Issue 2,   Pages 293-304 doi: 10.1007/s11783-013-0561-9

Abstract: Nonetheless, the addition of exogenous yeast-bacteria consortium significantly enhanced the removal of the aromatic

Keywords： bioremediation     petroleum hydrocarbon     biostimulation     bioaugmentation    

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The temporal changes of the concentration level of typical toxic organics in the river sediments around

Qiang Li, Xiong Xu, Yaoyao Fang, Ruiyang Xiao, Donghong Wang, Wenjue Zhong

Frontiers of Environmental Science & Engineering 2018, Volume 12, Issue 6, doi: 10.1007/s11783-018-1054-7

Abstract:

56 kinds of typical toxic organics were detected

Keywords： Organic compounds     Endocrine disrupters     Sediments     Concentration     Temporal changes    

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Assessment of toxicity of two nitroaromatic compounds in the freshwater fish

Hongyan SHEN, Jixi GAO, Jinsheng WANG

Frontiers of Environmental Science & Engineering 2012, Volume 6, Issue 4,   Pages 518-523 doi: 10.1007/s11783-012-0427-6

Abstract: Both compounds had moderate toxicity toward , and this toxicity increased with the exposure durationBinary mixtures of the compounds were more toxic than the individual compounds at 96 h, and they actedWhen the exposure time was longer, the toxicity increased for mixtures of compounds with the same concentration

Keywords： italic>     LC50     p-nitrotoluene     p-nitroaniline     toxic    

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Zinc modification of Ni-Ti as efficient NiZnTi catalysts with both geometric and electronic improvements for hydrogenation of nitroaromatics

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 4,   Pages 461-474 doi: 10.1007/s11705-021-2072-8

Abstract: The catalytic hydrogenation of nitroaromatics is an environmentally friendly technology for aniline production, and it is crucial to develop noble-metal-free catalysts that can achieve chemoselective hydrogenation of nitroaromatics under mild reaction conditions. In this work, zinc-modified Ni-Ti catalysts (NixZnyTi1) were fabricated and applied for the hydrogenation of nitroaromatics hydrogenation. It was found that the introduction of zinc effectively increases the surface Ni density, enhances the electronic effect, and improves the interaction between Ni and TiO2, resulting in smaller Ni particle size, more oxygen vacancies, higher dispersion and greater concentration of Ni on the catalyst surface. Furthermore, the electron-rich Niδ– obtained by electron transfer from Zn and Ti to Ni effectively adsorbs and dissociates hydrogen. The results reveal that NixZnyTi1 (Ni0.5Zn0.5Ti1) shows excellent catalytic performance under mild conditions (70 °C and 6 bar). These findings provide a rational strategy for the development of highly active non-noble-metal hydrogenation catalysts.

Keywords： bimetal strategy     oxygen vacancy     non-noble metal catalyst     hydrogenation     aromatic nitro compounds    

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Toxic effects of enrofloxacin on

Hongwei QIN, Liufang CHEN, Nan LU, Yahui ZHAO, Xing YUAN

Frontiers of Environmental Science & Engineering 2012, Volume 6, Issue 1,   Pages 107-116 doi: 10.1007/s11783-011-0327-1

Abstract: In this article, the toxic effects of Enrofloxacin (ENFX) on were studied, through investigating theThe possible toxic mechanisms of ENFX were analyzed by determining the superoxide dismutase (SOD) activity

Keywords： enrofloxacin     Scenedesmus obliquus     toxic effects    

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Removal and recovery of toxic nanosized Cerium Oxide using eco-friendly Iron Oxide Nanoparticles

Kanha Gupta, Nitin Khandelwal, Gopala Krishna Darbha

Frontiers of Environmental Science & Engineering 2020, Volume 14, Issue 1, doi: 10.1007/s11783-019-1194-4

Abstract: oxide nanoparticles and their release in the natural environment is a serious concern due to their toxicTherefore, it is essential to have eco-friendly solutions for the remediation of toxic metal oxides inThese IONPs were further utilized for the remediation of toxic metal oxide nanoparticle, i.e., CeO2.water samples was>90% signifying that IONPs are candidate adsorbent for the removal and recovery of toxic

Keywords： Adsorption     toxic metal oxide remediation     eco-friendly IONP     Iron oxide     CeO2 removal    

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Nanosized magnetite in low cost materials for remediation of water polluted with toxic metals, azo- and

María Fernanda HORST,Verónica LASSALLE,María Luján FERREIRA

Frontiers of Environmental Science & Engineering 2015, Volume 9, Issue 5,   Pages 746-769 doi: 10.1007/s11783-015-0814-x

Abstract: Nanosized magnetite has emerged as an adsorbent of pollutants in water remediation. Nanoadsorbents include magnetic iron oxide and its modifiers/stabilizers, such as carbon, silica, clay, organic moieties (polymers, aminoacids, and fatty acids) and other inorganic oxides. This review is focused on the recent developments on the synthesis and use of magnetic nanoparticles and nanocomposites in the treatment of contaminated water. The emphasis is on the influence of the iron oxide modifiers on some properties of interest such as size, BET area, and magnetization. The characteristics of these nanomaterials are related to their ability to eliminate heavy metal ions and dyes from wastewater. Comparative analysis of the actual literature was performed aiming to present the magnetic material, its preparation methodology and performance in the elimination of the selected pollutants. Vast information has been properly summarized according to the materials, their properties and preferential affinity for selected contaminants. The mechanisms governing nanomaterial’s formation as well as the interactions with heavy metals and dyes have been carefully analyzed and associated to their efficiency.

Keywords： nanomagnetite     water remediation     toxic metals     dyes     supported magnetite    

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Enhancing the aromatic selectivity of cyclohexane aromatization by CO2 coupling

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 11,   Pages 1801-1808 doi: 10.1007/s11705-023-2325-9

Abstract: Improving the aromatic selectivity in the alkane aromatization process is of great importance for itsis introduced into the cyclohexane conversion process on the HZSM-5 zeolite, which can improve the aromaticBy optimizing the reaction conditions, an improved aromatic (benzene, toluene, xylene, and C9+2), 450 °C, and 1.7 h−1, which is better than that without CO2 (aromaticThis study may open a green, economic, and promising way to improve the aromatic selectivity for alkane

Keywords： aromatics     carbon dioxide     aromatization     coupling reaction     ZSM-5 zeolite    

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Cohort study of patients with Stevens–Johnson syndrome and toxic epidermal necrolysis in China: evaluation

Yanhong Shou, Lu Yang, Yongsheng Yang, Xiaohua Zhu, Feng Li, Bo Yin, Yingyan Zheng, Jinhua Xu

Frontiers of Medicine 2021, Volume 15, Issue 4,   Pages 585-593 doi: 10.1007/s11684-020-0817-2

Abstract: Stevens--Johnson syndrome (SJS) and toxic epidermal necrolysis (TEN) are rare but severe diseases.

Keywords： Stevens–Johnson syndrome     toxic epidermal necrolysis     auxiliary score     ABCD-10     pulmonary consolidation    

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Highly uniform Ni particles with phosphorus and adjacent defects catalyze 1,5-dinitronaphthalene hydrogenation with excellent catalytic performance

Wei Xiong, Susu Zhou, Zeyong Zhao, Fang Hao, Zhihui Cai, Pingle Liu, Hailiang Zhang, Hean Luo

Frontiers of Chemical Science and Engineering 2021, Volume 15, Issue 4,   Pages 998-1007 doi: 10.1007/s11705-020-1994-x

Abstract: defects and heteroatoms (N,P-ACs) by nitrogen and phosphorus doping to load non-noble nickel to catalyze aromaticheteroatomic doping on the active carbon shows significant effects in the hydrogenation of the liquid-phase aromaticcompounds.These findings could provide a promising route for the rational design of aromatic compound hydrogenation

Keywords： nitrogen and phosphorus doping     non-noble nickel catalyst     aromatic compounds hydrogenation    

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Application of probabilistic risk assessment at a coking plant site contaminated by Polycyclic Aromatic

XIA Tianxiang,JIANG Lin,JIA Xiaoyang,ZHONG Maosheng,LIANG Jing

Frontiers of Environmental Science & Engineering 2014, Volume 8, Issue 3,   Pages 441-450 doi: 10.1007/s11783-013-0572-6

Abstract: Application of Probabilistic Risk Assessment (PRA) and Deterministic Risk Assessment (DRA) at a coking plant site was compared. By DRA, Hazard Quotient (HQ) following exposure to Naphthalene (Nap) and Incremental Life Cancer Risk (ILCR) following exposure to Benzo(a)pyrene (Bap) were 1.87 and 2.12 × 10 . PRA revealed valuable information regarding the possible distribution of risk, and risk estimates of DRA located at the 99.59th and 99.76th percentiles in the risk outputs of PRA, which indicated that DRA overestimated the risk. Cleanup levels corresponding acceptable HQ level of 1 and ILCR level of 10 were also calculated for both DRA and PRA. Nap and Bap cleanup levels were 192.85 and 0.14 mg·kg by DRA, which would result in only 0.25% and 0.06% of the exposed population to have a risk higher than the acceptable risk, according to the outputs of PRA. The application of PRA on cleanup levels derivation would lift the cleanup levels 1.9 times for Nap and 2.4 times for Bap than which derived by DRA. For this coking plant site, the remediation scale and cost will be reduced in a large portion once the method of PRA is used. Sensitivity analysis was done by calculating the contribution to variance for each exposure parameter and it was found that contaminant concentration in the soil ( ), exposure duration ( ), total hours spent outdoor per day ( ), soil ingestion rate ( ), the air breathing rate ( ) and bodyweight ( ) were the most important parameters for risk and cleanup levels calculations.

Keywords： Probabilistic Risk Assessment (PRA)     a coking plant     risk     cleanup level     sensitivity analysis     polycyclic aromatic    

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fabricating photoluminescent carbon dots and its potential application as an efficient sensor probe for toxic

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 5,   Pages 536-547 doi: 10.1007/s11705-022-2239-y

Abstract: The past decade has witnessed a variety of members of the carbon family along with exposure of carbon dots due to their magnificent properties in sensing, bioimaging, catalytic applications, biomedical fields, and so on. Herein, we report the simple hydrothermal method to fabricate photoluminescent doped carbon quantum dots for the detection of noxious lead(II) ions. Lead(II) ion is very venomous for both the environment and human health for which its detection is demanded area in the research field. The as-prepared carbon dots show excellent photostability, low toxicity and significant photoluminescence properties along with good water solubility. Along with these properties, carbon dots have a quantum yield of approximately 15%. In the practical field of application, these carbon dots have been used as sensing probes for the detection of lead(II) ions with a detection limit of 60 nmol·L–1. The fluorescence intensity of carbon dots was remarkably quenched in the presence of the lead(II) ion selectively among all the tested metal ions. Furthermore, we have studied the Stern–Volmer relationship for lead(II) quenching along with the explanation of the probable quenching mechanism. Ability of the doped carbon dots in heavy metal ions sensing in an environmental sample was demonstrated.

Keywords： carbon dots     fluorescence     heavy metal sensing     practical application     photoluminescence    

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Concentrations of toxic heavy metals in ambient particulate matter in an industrial area of northeastern

PIAO Fengyuan, SUN Xiance, LIU Shuang, YAMAUCHI Toru

Frontiers of Medicine 2008, Volume 2, Issue 2,   Pages 207-210 doi: 10.1007/s11684-008-0040-z

Abstract: This paper investigates concentrations of various heavy metals in ambient particulate matter (PM) and provide evidence for prevention from air pollution. The concentrations of heavy metal components in the PM were determined by inductively coupled plasma/Mass spectrometry (ICP/MS) from September 2000 to August 2002 in a northeast industrial city in China. Concentrations of Cd, Mn, Pb, Ni, Cr and As in the PM were 9.3, 461.9, 588.7, 69.5, 205.7 and 57.4 ng/m in the industrial area, and 5.7, 245.5, 305.0, 31.4, 58.8 and 32.5 ng/m in the main road, respectively. Concentrations of these heavy metals except Cd were significantly higher in the industrial area and main road than those in the suburban area ( < 0.05 or < 0.01). The change curves of the six heavy metal concentrations show their concentrations increased in the winter and spring, but decreased in the summer and autumn. The results indicate that concentrations of the metals in the PM are relatively high in the industrial area and main road.

Keywords： summer     August     northeast industrial     September     spring    

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Title Author Date Type Operation

Insight into fluorescence properties of 14 selected toxic single-ring aromatic compounds in water: Experimental

Muhammad Farooq Saleem Khan, Jing Wu, Cheng Cheng, Mona Akbar, Chuanyang Liu, Bo Liu, Jian Shen, Yu Xin

Journal Article

Impact and inhibitory mechanism of phenolic compounds on the formation of toxic Maillard reaction products

Jing TENG, Xiaoqian HU, Ningping TAO, Mingfu WANG

Journal Article

Bioremediation of highly contaminated oilfield soil: Bioaugmentation for enhancing aromatic compounds

Jun QIAO, Chengdong ZHANG, Shuiming LUO, Wei CHEN

Journal Article

The temporal changes of the concentration level of typical toxic organics in the river sediments around

Qiang Li, Xiong Xu, Yaoyao Fang, Ruiyang Xiao, Donghong Wang, Wenjue Zhong

Journal Article

Assessment of toxicity of two nitroaromatic compounds in the freshwater fish

Hongyan SHEN, Jixi GAO, Jinsheng WANG

Journal Article

Zinc modification of Ni-Ti as efficient NiZnTi catalysts with both geometric and electronic improvements for hydrogenation of nitroaromatics

Journal Article

Toxic effects of enrofloxacin on

Hongwei QIN, Liufang CHEN, Nan LU, Yahui ZHAO, Xing YUAN

Journal Article

Removal and recovery of toxic nanosized Cerium Oxide using eco-friendly Iron Oxide Nanoparticles

Kanha Gupta, Nitin Khandelwal, Gopala Krishna Darbha

Journal Article

Nanosized magnetite in low cost materials for remediation of water polluted with toxic metals, azo- and

María Fernanda HORST,Verónica LASSALLE,María Luján FERREIRA

Journal Article

Enhancing the aromatic selectivity of cyclohexane aromatization by CO2 coupling

Journal Article

Cohort study of patients with Stevens–Johnson syndrome and toxic epidermal necrolysis in China: evaluation

Yanhong Shou, Lu Yang, Yongsheng Yang, Xiaohua Zhu, Feng Li, Bo Yin, Yingyan Zheng, Jinhua Xu

Journal Article

Highly uniform Ni particles with phosphorus and adjacent defects catalyze 1,5-dinitronaphthalene hydrogenation with excellent catalytic performance

Wei Xiong, Susu Zhou, Zeyong Zhao, Fang Hao, Zhihui Cai, Pingle Liu, Hailiang Zhang, Hean Luo

Journal Article

Application of probabilistic risk assessment at a coking plant site contaminated by Polycyclic Aromatic

XIA Tianxiang,JIANG Lin,JIA Xiaoyang,ZHONG Maosheng,LIANG Jing

Journal Article

fabricating photoluminescent carbon dots and its potential application as an efficient sensor probe for toxic

Journal Article

Concentrations of toxic heavy metals in ambient particulate matter in an industrial area of northeastern

PIAO Fengyuan, SUN Xiance, LIU Shuang, YAMAUCHI Toru

Journal Article