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  1. Article ; Online: Atmospheric deposition of mineral dust and associated nutrients over the Equatorial Indian Ocean.

    Panda, Prema Piyusha / Shukla, Garima / Kumar, Ashwini / Aswini, M A / Kaushik, Ankush / Nayak, Gourav / Matta, Vishnu Murthy

    The Science of the total environment

    2024  Volume 915, Page(s) 169779

    Abstract: Aerosols are potential supplier of nutrients to the surface water of oceans and can impact biogeochemical processes particularly in the remote locations. The nutrient data from atmospheric supply is poorly reported from the Indian Ocean region. In this ... ...

    Abstract Aerosols are potential supplier of nutrients to the surface water of oceans and can impact biogeochemical processes particularly in the remote locations. The nutrient data from atmospheric supply is poorly reported from the Indian Ocean region. In this study, we present atmospheric nutrients such as reactive nitrogen species (Nitrate, Ammonium, Organic nitrogen), micro-nutrients (e.g. Fe, Mn and Cu) concentration along with mineral dust in the aerosol samples collected over meridional transect during summer (April-May 2018) and monsoon (June-July 2019) months. A significant spatial variation of dust was observed during summer (0.6-22.8 μg m
    Language English
    Publishing date 2024-01-04
    Publishing country Netherlands
    Document type Journal Article
    ZDB-ID 121506-1
    ISSN 1879-1026 ; 0048-9697
    ISSN (online) 1879-1026
    ISSN 0048-9697
    DOI 10.1016/j.scitotenv.2023.169779
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    In stock of ZB MED Cologne/Königswinter

    Zs.A 949: Show issues Location:
    Je nach Verfügbarkeit (siehe Angabe bei Bestand)
    bis Jg. 1994: Bestellungen von Artikeln über das Online-Bestellformular
    Jg. 1995 - 2021: Lesesall (1.OG)
    ab Jg. 2022: Lesesaal (EG)

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  2. Article ; Online: Identification and physico-chemical characterization of microplastics in marine aerosols over the northeast Arabian Sea.

    Kaushik, Ankush / Gupta, Priyansha / Kumar, Ashwini / Saha, Mahua / Varghese, Emil / Shukla, Garima / Suresh, K / Gunthe, Sachin S

    The Science of the total environment

    2023  Volume 912, Page(s) 168705

    Abstract: Microplastics (MPs) in the atmosphere can undergo long-range transport from emission regions to pristine terrestrial and oceanic ecosystems. Due to their inherent toxic and hazardous characteristics, MPs pose serious risks to both human well-being and ... ...

    Abstract Microplastics (MPs) in the atmosphere can undergo long-range transport from emission regions to pristine terrestrial and oceanic ecosystems. Due to their inherent toxic and hazardous characteristics, MPs pose serious risks to both human well-being and the equilibrium of ecosystem. The present study outlines the comprehensive characterization, spanning physical and chemical attributes of MPs associated with atmospheric aerosols. Total suspended particulates (TSPs) were collected on a quartz fibre filter by operating a high-volume sampler for 24 h during distinct years (March, 2016 and November, 2020) at a coastal location in the northeast Arabian Sea. Subsequent to the sampling, a series of techniques were applied including density separation. The assessment and scrutiny of the MPs was carried out using stereo-zoom microscopy with supplementary validation using advanced fluorescence microscopy for enhanced precision in identification. Our comparative assessment suggests peroxide treatment followed by density separation could be a robust procedure for the definitive identification and characterization of MPs in the atmosphere. Average total abundance of MPs was found to be 1.30 ± 0.14 n/m
    Language English
    Publishing date 2023-11-23
    Publishing country Netherlands
    Document type Journal Article
    ZDB-ID 121506-1
    ISSN 1879-1026 ; 0048-9697
    ISSN (online) 1879-1026
    ISSN 0048-9697
    DOI 10.1016/j.scitotenv.2023.168705
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    In stock of ZB MED Cologne/Königswinter

    Zs.A 949: Show issues Location:
    Je nach Verfügbarkeit (siehe Angabe bei Bestand)
    bis Jg. 1994: Bestellungen von Artikeln über das Online-Bestellformular
    Jg. 1995 - 2021: Lesesall (1.OG)
    ab Jg. 2022: Lesesaal (EG)

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  3. Article ; Online: Antimicrobial and dye degradation application of fungi-assisted silver nanoparticles and utilization of fungal retentate biomass for dye removal.

    Gola, Deepak / Tyagi, Pankaj Kumar / Arya, Arvind / Gupta, Dhriti / Raghav, Jyoti / Kaushik, Ankush / Agarwal, Meenu / Chauhan, Nitin / Srivastava, Sunil Kumar

    Water environment research : a research publication of the Water Environment Federation

    2021  Volume 93, Issue 11, Page(s) 2727–2739

    Abstract: The present study utilized Aspergillus spp. for the synthesis of silver nanoparticles (AgNPs); the developed AgNPs were categorized using analytical techniques, that is, ultraviolet-visible (UV-vis) spectrophotometer, Zeta-potential, dynamic light ... ...

    Abstract The present study utilized Aspergillus spp. for the synthesis of silver nanoparticles (AgNPs); the developed AgNPs were categorized using analytical techniques, that is, ultraviolet-visible (UV-vis) spectrophotometer, Zeta-potential, dynamic light scattering (DLS), and transmission electron microscopy (TEM). A sharp peak of 463 nm highlighted the synthesis of AgNPs; further Zeta-potential of -16 mV indicates stability of synthesized AgNPs. The TEM micrograph showed spherical and hexagonal shapes of synthesized AgNPs of 6-25 nm. The photocatalytic activity of fungal-mediated AgNPs was evaluated for degradation of reactive yellow dye in the concentration range of 20-100 mg L
    MeSH term(s) Anti-Bacterial Agents/pharmacology ; Anti-Infective Agents ; Biomass ; Coloring Agents ; Escherichia coli ; Fungi ; Metal Nanoparticles ; Silver ; Staphylococcus aureus
    Chemical Substances Anti-Bacterial Agents ; Anti-Infective Agents ; Coloring Agents ; Silver (3M4G523W1G)
    Language English
    Publishing date 2021-09-15
    Publishing country United States
    Document type Journal Article
    ZDB-ID 1098976-6
    ISSN 1554-7531 ; 1047-7624 ; 1061-4303
    ISSN (online) 1554-7531
    ISSN 1047-7624 ; 1061-4303
    DOI 10.1002/wer.1629
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    In stock of ZB MED Cologne/Königswinter

    Zs.B 490: Show issues Location:
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    bis Jg. 2021: Bestellungen von Artikeln über das Online-Bestellformular
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  4. Article: Antimicrobial and dye degradation application of fungi‐assisted silver nanoparticles and utilization of fungal retentate biomass for dye removal

    Gola, Deepak / Tyagi, Pankaj Kumar / Arya, Arvind / Gupta, Dhriti / Raghav, Jyoti / Kaushik, Ankush / Agarwal, Meenu / Chauhan, Nitin / Srivastava, Sunil Kumar

    Water environment research. 2021 Nov., v. 93, no. 11

    2021  

    Abstract: The present study utilized Aspergillus spp. for the synthesis of silver nanoparticles (AgNPs); the developed AgNPs were categorized using analytical techniques, that is, ultraviolet–visible (UV–vis) spectrophotometer, Zeta‐potential, dynamic light ... ...

    Abstract The present study utilized Aspergillus spp. for the synthesis of silver nanoparticles (AgNPs); the developed AgNPs were categorized using analytical techniques, that is, ultraviolet–visible (UV–vis) spectrophotometer, Zeta‐potential, dynamic light scattering (DLS), and transmission electron microscopy (TEM). A sharp peak of 463 nm highlighted the synthesis of AgNPs; further Zeta‐potential of −16 mV indicates stability of synthesized AgNPs. The TEM micrograph showed spherical and hexagonal shapes of synthesized AgNPs of 6–25 nm. The photocatalytic activity of fungal‐mediated AgNPs was evaluated for degradation of reactive yellow dye in the concentration range of 20–100 mg L⁻¹. The results showed efficient degradation of dye using AgNPs in short span of time. For antibacterial activity, synthesized AgNPs, antibiotic, and AgNPs + antibiotic were tested. As per results, the zone of inhibition (ZOI) of AgNPs showed the values of 13 and 10 mm for Escherichia coli and Staphylococcus aureus, respectively. Further, the ZOI of penicillin highlighted the values of 18 and 17 mm for E. coli and S. aureus, respectively. When AgNPs and penicillin were used in combination, a clear synergistic effect was observed; the ZOI showed 0.49‐ and 0.36‐fold increase in area against E. coli and S. aureus, respectively, in comparison with penicillin or AgNPs alone. Further, the leftover biomass (retentate biomass) was used to decolorize the reactive yellow dye at different initial concentration ranging from 20 to 100 mg L⁻¹. It was observed that 1 g L⁻¹ retentate biomass (BR) can effectively remove 82%–100% dye at 20 and 100 mg L⁻¹ initial dye concentration. Results also indicated that with increase in initial reactive dye concentration from 20 to 100 mg L⁻¹, the decolorization capacity of retentate biomass (BR) (at 0.2 g L⁻¹) decreased from 79.2% to 32.3%. However, the use of AgNPs synthesized leftover fungal biomass can be a good option for up taking the additional dyes/contaminants, and also as leftover biomass can be utilized effectively, it can prove to be an excellent approach for environment safety. As the literature studies did not mentioned the further use of retentate biomass, the present study provides an excellent approach for further research on this aspect. PRACTITIONER POINTS: Synthesis of AgNPs from Aspergillus spp. and characterized with the help of a U.V‐vis spectrophotometer, a zeta potential, DLS and TEM. The developed AgNPs were used for antibacterial and dye degradation activity. The left over (retentate) fungal biomass was used further for additional dye degradation activity
    Keywords Aspergillus ; Escherichia coli ; Staphylococcus aureus ; antibacterial properties ; decolorization ; dyes ; environment ; fungal biomass ; fungi ; nanosilver ; penicillins ; photocatalysis ; research ; spectrophotometers ; synergism ; transmission electron microscopy ; water ; zeta potential
    Language English
    Dates of publication 2021-11
    Size p. 2727-2739.
    Publishing place John Wiley & Sons, Ltd
    Document type Article
    Note JOURNAL ARTICLE
    ZDB-ID 1098976-6
    ISSN 1554-7531 ; 1047-7624 ; 1061-4303
    ISSN (online) 1554-7531
    ISSN 1047-7624 ; 1061-4303
    DOI 10.1002/wer.1629
    Database NAL-Catalogue (AGRICOLA)

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    Z 4344: Show issues

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