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  1. Article: Biogenic secondary organic aerosols: A review on formation mechanism, analytical challenges and environmental impacts

    Mahilang, Mithlesh / Deb, Manas Kanti / Pervez, Shamsh

    Chemosphere. 2021 Jan., v. 262

    2021  

    Abstract: The review initiates with current state of information on the atmospheric reaction mechanism of biogenic volatile organic compounds (BVOCs) and its fate in the atmosphere. The plants release BVOCs, i.e., isoprene, monoterpenes, and sesquiterpenes, which ... ...

    Abstract The review initiates with current state of information on the atmospheric reaction mechanism of biogenic volatile organic compounds (BVOCs) and its fate in the atmosphere. The plants release BVOCs, i.e., isoprene, monoterpenes, and sesquiterpenes, which form secondary organic aerosols (SOA) upon oxidation. These oxidation reactions are primarily influenced by solar radiations along with other meteorological parameters viz.; temperature and relative humidity, therefore, the chemistry behind SOA formation is different during day than the night time. The review throws light upon the day and nighttime formation mechanism of SOA, recent advancements in the analytical techniques available for the measurements, and its impact on the environment. Studies have revealed that day time SOA formation is dominated by OH and O₃, however, NOx initiated SOA production is dominated during night. The formation mechanism addresses that the gaseous products of VOCs are firstly formed and then partitioned over the pre-existing particles. New particle formation and biomass-derived aerosols are found to be responsible for enhanced SOA formation. 2-Dimensional gas chromatography-mass spectrometer (2D-GC/MS) is observed to be best for the analysis of organic aerosols. Radiative forcing (RF) SOA is observed to be a useful parameter to evaluate the environmental impacts of SOA and reviewed studies have shown mean RF in the ranges of −0.27 to +0.20 W m⁻².
    Keywords environmental impact ; isoprene ; monoterpenoids ; oxidation ; reaction mechanisms ; relative humidity ; sesquiterpenoids ; spectrometers ; temperature ; volatile organic compounds
    Language English
    Dates of publication 2021-01
    Publishing place Elsevier Ltd
    Document type Article
    Note NAL-light
    ZDB-ID 120089-6
    ISSN 1879-1298 ; 0045-6535 ; 0366-7111
    ISSN (online) 1879-1298
    ISSN 0045-6535 ; 0366-7111
    DOI 10.1016/j.chemosphere.2020.127771
    Database NAL-Catalogue (AGRICOLA)

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  2. Article ; Online: Biogenic secondary organic aerosols: A review on formation mechanism, analytical challenges and environmental impacts.

    Mahilang, Mithlesh / Deb, Manas Kanti / Pervez, Shamsh

    Chemosphere

    2020  Volume 262, Page(s) 127771

    Abstract: The review initiates with current state of information on the atmospheric reaction mechanism of biogenic volatile organic compounds (BVOCs) and its fate in the atmosphere. The plants release BVOCs, i.e., isoprene, monoterpenes, and sesquiterpenes, which ... ...

    Abstract The review initiates with current state of information on the atmospheric reaction mechanism of biogenic volatile organic compounds (BVOCs) and its fate in the atmosphere. The plants release BVOCs, i.e., isoprene, monoterpenes, and sesquiterpenes, which form secondary organic aerosols (SOA) upon oxidation. These oxidation reactions are primarily influenced by solar radiations along with other meteorological parameters viz.; temperature and relative humidity, therefore, the chemistry behind SOA formation is different during day than the night time. The review throws light upon the day and nighttime formation mechanism of SOA, recent advancements in the analytical techniques available for the measurements, and its impact on the environment. Studies have revealed that day time SOA formation is dominated by OH and O
    MeSH term(s) Aerosols/analysis ; Aerosols/chemistry ; Air Pollutants/analysis ; Air Pollutants/chemistry ; Atmosphere/chemistry ; Butadienes/analysis ; Butadienes/chemistry ; Hemiterpenes/analysis ; Hemiterpenes/chemistry ; Monoterpenes/analysis ; Monoterpenes/chemistry ; Oxidation-Reduction ; Temperature ; Volatile Organic Compounds/analysis ; Volatile Organic Compounds/chemistry
    Chemical Substances Aerosols ; Air Pollutants ; Butadienes ; Hemiterpenes ; Monoterpenes ; Volatile Organic Compounds ; isoprene (0A62964IBU)
    Language English
    Publishing date 2020-08-07
    Publishing country England
    Document type Journal Article ; Review
    ZDB-ID 120089-6
    ISSN 1879-1298 ; 0045-6535 ; 0366-7111
    ISSN (online) 1879-1298
    ISSN 0045-6535 ; 0366-7111
    DOI 10.1016/j.chemosphere.2020.127771
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article: Influence of fireworks emission on aerosol aging process at lower troposphere and associated health risks in an urban region of eastern central India.

    Mahilang, Mithlesh / Deb, Manas Kanti / Nirmalkar, Jayant / Pervez, Shamsh

    Atmospheric pollution research

    2020  Volume 11, Issue 7, Page(s) 1127–1141

    Abstract: To study the influence of fireworks in atmospheric aerosols and their effect on health during the extreme firework days, fireworks tracer metals and carbonaceous species in size-distributed aerosols in the lower troposphere at Raipur in eastern central ... ...

    Abstract To study the influence of fireworks in atmospheric aerosols and their effect on health during the extreme firework days, fireworks tracer metals and carbonaceous species in size-distributed aerosols in the lower troposphere at Raipur in eastern central India were investigated during the 2018 Deepawali festival. Aerosol samples were collected, before Deepawali period (BDP, n = 5), during Deepawali period (DDP, n = 5) and after Deepawali period (ADP, n = 5). Bimodal size-distribution with intense fine mode peak was found for Na during DDP. Bimodal distribution with fine mode intense peak was found for K during DDP. The bimodal size distribution of K was found common for other events because of biomass burning emissions, whereas high intense peak during DDP indicated mixed sources from biomass burning and fireworks. During DDP, K and Ca were well correlated (r
    Keywords covid19
    Language English
    Publishing date 2020-04-21
    Publishing country Turkey
    Document type Journal Article
    ZDB-ID 2645757-X
    ISSN 1309-1042
    ISSN 1309-1042
    DOI 10.1016/j.apr.2020.04.009
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article: Biogenic secondary organic aerosol formation in an urban area of eastern central India: Seasonal variation, size distribution and source characterization

    Mahilang, Mithlesh / Deb, Manas Kanti / Pervez, Shamsh / Tiwari, Swapnil / Jain, Vikas Kumar

    Environmental research. 2021 Apr., v. 195

    2021  

    Abstract: Samples of ambient aerosols were collected at an urban site of eastern central India from monsoon to summer 2016–17 for the characterization of biogenic secondary organic aerosols (BSOA). The BSOA tracers derived from isoprene, α/β-pinene and β- ... ...

    Abstract Samples of ambient aerosols were collected at an urban site of eastern central India from monsoon to summer 2016–17 for the characterization of biogenic secondary organic aerosols (BSOA). The BSOA tracers derived from isoprene, α/β-pinene and β-caryophyllene in size-distributed aerosols were studied. Concentrations of total SOAI (Isoprene secondary organic aerosols) were found more abundant than α/β-pinene in summer, while contradictory trends were found in the winter season, where SOAM (monoterpene derived SOA) and SOAS (sesquiterpenes derived SOA) were dominated. Size-distribution study revealed that most of the BSOA were formed in the aerosol phase and dominated in fine mode, except cis-pinonic acid. They were formed in the gaseous phase and partitioned onto the aerosol phase. The alkaline nature of mineral dust particles that triggered the adsorption of gaseous species onto pre-existing particles could be the reason for bimodal size distribution with major coarse mode peak and miner fine mode peak. Temporal variations suggest that the BSOA must be derived from terrestrial vegetation and biomass burning. The isoprene SOC (secondary organic carbon) contributed 0.91%, 1.38%, 0.88% and 1.04% to OC during winter, summer, post-monsoon and monsoon season, respectively. The isoprene SOC in fine mode was found to be higher than the coarse mode.
    Keywords adsorption ; aerosols ; biomass ; dust ; isoprene ; monsoon season ; organic carbon ; research ; seasonal variation ; summer ; urban areas ; vegetation ; winter ; India
    Language English
    Dates of publication 2021-04
    Publishing place Elsevier Inc.
    Document type Article
    Note NAL-AP-2-clean
    ZDB-ID 205699-9
    ISSN 1096-0953 ; 0013-9351
    ISSN (online) 1096-0953
    ISSN 0013-9351
    DOI 10.1016/j.envres.2021.110802
    Database NAL-Catalogue (AGRICOLA)

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  5. Article ; Online: Biogenic secondary organic aerosol formation in an urban area of eastern central India: Seasonal variation, size distribution and source characterization.

    Mahilang, Mithlesh / Deb, Manas Kanti / Pervez, Shamsh / Tiwari, Swapnil / Jain, Vikas Kumar

    Environmental research

    2021  Volume 195, Page(s) 110802

    Abstract: Samples of ambient aerosols were collected at an urban site of eastern central India from monsoon to summer 2016-17 for the characterization of biogenic secondary organic aerosols (BSOA). The BSOA tracers derived from isoprene, α/β-pinene and β- ... ...

    Abstract Samples of ambient aerosols were collected at an urban site of eastern central India from monsoon to summer 2016-17 for the characterization of biogenic secondary organic aerosols (BSOA). The BSOA tracers derived from isoprene, α/β-pinene and β-caryophyllene in size-distributed aerosols were studied. Concentrations of total SOAI (Isoprene secondary organic aerosols) were found more abundant than α/β-pinene in summer, while contradictory trends were found in the winter season, where SOAM (monoterpene derived SOA) and SOAS (sesquiterpenes derived SOA) were dominated. Size-distribution study revealed that most of the BSOA were formed in the aerosol phase and dominated in fine mode, except cis-pinonic acid. They were formed in the gaseous phase and partitioned onto the aerosol phase. The alkaline nature of mineral dust particles that triggered the adsorption of gaseous species onto pre-existing particles could be the reason for bimodal size distribution with major coarse mode peak and miner fine mode peak. Temporal variations suggest that the BSOA must be derived from terrestrial vegetation and biomass burning. The isoprene SOC (secondary organic carbon) contributed 0.91%, 1.38%, 0.88% and 1.04% to OC during winter, summer, post-monsoon and monsoon season, respectively. The isoprene SOC in fine mode was found to be higher than the coarse mode.
    MeSH term(s) Aerosols/analysis ; Air Pollutants/analysis ; Environmental Monitoring ; India ; Particulate Matter/analysis ; Seasons
    Chemical Substances Aerosols ; Air Pollutants ; Particulate Matter
    Language English
    Publishing date 2021-01-28
    Publishing country Netherlands
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 205699-9
    ISSN 1096-0953 ; 0013-9351
    ISSN (online) 1096-0953
    ISSN 0013-9351
    DOI 10.1016/j.envres.2021.110802
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: A KBr-impregnated paper substrate as a sample probe for the enhanced ATR-FTIR signal strength of anionic and non-ionic surfactants in an aqueous medium.

    Kurrey, Ramsingh / Deb, Manas Kanti / Shrivas, Kamlesh / Nirmalkar, Jayant / Sen, Bhupendra Kumar / Mahilang, Mithlesh / Jain, Vikas Kumar

    RSC advances

    2020  Volume 10, Issue 66, Page(s) 40428–40441

    Abstract: Herein, we report a KBr-impregnated paper substrate as a sample probe to enhance the attenuated total reflection-Fourier transform infrared (ATR-FTIR) signal strength of anionic surfactants (AS) and non-ionic surfactants (NS) in an aqueous solution. The ... ...

    Abstract Herein, we report a KBr-impregnated paper substrate as a sample probe to enhance the attenuated total reflection-Fourier transform infrared (ATR-FTIR) signal strength of anionic surfactants (AS) and non-ionic surfactants (NS) in an aqueous solution. The mechanism for the sensing of AS and NS is based on the strong interaction of surfactants with the silicate groups (SiO
    Language English
    Publishing date 2020-11-07
    Publishing country England
    Document type Journal Article
    ISSN 2046-2069
    ISSN (online) 2046-2069
    DOI 10.1039/d0ra07286a
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article: Analytical approach on surface active agents in the environment and challenges

    Kurrey, Ramsingh / Mahilang, Mithlesh / Deb, Manas Kanti / Shrivas, Kamlesh

    Trends in environmental analytical chemistry. 2019 Jan., v. 21

    2019  

    Abstract: Surface active agents (SAAs) are a class of compounds, which is used in variety of products such as detergents, fabric softeners, soaps, paints, adhesives, inks and anti-fogs. After the use of these products containing surfactants are disposed in water ... ...

    Abstract Surface active agents (SAAs) are a class of compounds, which is used in variety of products such as detergents, fabric softeners, soaps, paints, adhesives, inks and anti-fogs. After the use of these products containing surfactants are disposed in water reservoirs. The separation and determination of surfactants from complex matrices become challenging for analytical chemists. The fundamentals on separation, preconcentration and analysis of surfactants employing different analytical instrumental techniques for qualitative and quantitative determination of surfactants in environmental samples are discussed. In addition, this compiled work enhanced our knowledge in learning about pathway mechanisms and the degree of their environmental loads. We also discussed the different aspects of method validation in the framework of quality control (QC) and quality assurance (QA). This review provides information on levels of SAAs in various environmental samples including soil, sediments, sewage wastewater, river wastewater and aerosols worldwide.
    Keywords adhesives ; aerosols ; analytical methods ; detergents ; fabrics ; paints ; quality control ; quantitative analysis ; rivers ; sediments ; sewage ; soaps ; soil ; surfactants ; wastewater ; water reservoirs
    Language English
    Dates of publication 2019-01
    Publishing place Elsevier B.V.
    Document type Article
    ISSN 2214-1588
    DOI 10.1016/j.teac.2019.e00061
    Database NAL-Catalogue (AGRICOLA)

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  8. Article ; Online: A direct DRS-FTIR probe for rapid detection and quantification of fluoroquinolone antibiotics in poultry egg-yolk.

    Kurrey, Ramsingh / Mahilang, Mithlesh / Kanti Deb, Manas / Nirmalkar, Jayant / Shrivas, Kamlesh / Pervez, Shamsh / Kumar Rai, Manish / Rai, Joyce

    Food chemistry

    2018  Volume 270, Page(s) 459–466

    Abstract: We report a novel diffuse reflectance-Fourier transforms infrared (DRS-FTIR) spectral monitoring of fluoroquinolone antibiotics such as ciprofloxacin (CIP) and norfloxacin (NOR) for their quantification in poultry egg-yolks. To the best of our knowledge, ...

    Abstract We report a novel diffuse reflectance-Fourier transforms infrared (DRS-FTIR) spectral monitoring of fluoroquinolone antibiotics such as ciprofloxacin (CIP) and norfloxacin (NOR) for their quantification in poultry egg-yolks. To the best of our knowledge, this is the first report to describe the rapid quantitative determination of fluoroquinolone antibiotics in poultry egg samples using DRS-FTIR. The characteristic absorption peaks obtained at 1627 and 1026 cm
    MeSH term(s) Animals ; Anti-Bacterial Agents/analysis ; Anti-Bacterial Agents/biosynthesis ; Egg Yolk/classification ; Fluoroquinolones/analysis ; Food Analysis ; Food Contamination/analysis ; Poultry ; Spectroscopy, Fourier Transform Infrared/methods
    Chemical Substances Anti-Bacterial Agents ; Fluoroquinolones
    Language English
    Publishing date 2018-07-19
    Publishing country England
    Document type Journal Article
    ZDB-ID 243123-3
    ISSN 1873-7072 ; 0308-8146
    ISSN (online) 1873-7072
    ISSN 0308-8146
    DOI 10.1016/j.foodchem.2018.07.129
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article: A direct DRS-FTIR probe for rapid detection and quantification of fluoroquinolone antibiotics in poultry egg-yolk

    Kurrey, Ramsingh / Mahilang, Mithlesh / Kanti Deb, Manas / Nirmalkar, Jayant / Shrivas, Kamlesh / Pervez, Shamsh / Kumar Rai, Manish / Rai, Joyce

    Food chemistry. 2019 Jan. 01, v. 270

    2019  

    Abstract: We report a novel diffuse reflectance-Fourier transforms infrared (DRS-FTIR) spectral monitoring of fluoroquinolone antibiotics such as ciprofloxacin (CIP) and norfloxacin (NOR) for their quantification in poultry egg-yolks. To the best of our knowledge, ...

    Abstract We report a novel diffuse reflectance-Fourier transforms infrared (DRS-FTIR) spectral monitoring of fluoroquinolone antibiotics such as ciprofloxacin (CIP) and norfloxacin (NOR) for their quantification in poultry egg-yolks. To the best of our knowledge, this is the first report to describe the rapid quantitative determination of fluoroquinolone antibiotics in poultry egg samples using DRS-FTIR. The characteristic absorption peaks obtained at 1627 and 1026 cm−1 were used for optimization and determination of CIP and NOR, respectively. The linearity range obtained for the determination of CIP and NOR in egg samples was 0.05–0.50 ng mL−1 with limit of detection and limit of quantification of 0.032 and 1.551 ng mL−1 and 0.028 and 0.194 ng mL−1, respectively. Good recoveries were obtained in the range of 83.1–102.3% from poultry eggs samples using DRS-FTIR method. The advantages of the DRS-FTIR method are its simplicity, sensitivity and suitability for high-throughput analysis towards the food samples.
    Keywords absorption ; antibiotics ; ciprofloxacin ; detection limit ; egg yolk ; eggs ; monitoring ; norfloxacin ; poultry ; quantitative analysis ; rapid methods
    Language English
    Dates of publication 2019-0101
    Size p. 459-466.
    Publishing place Elsevier Ltd
    Document type Article
    ZDB-ID 243123-3
    ISSN 1873-7072 ; 0308-8146
    ISSN (online) 1873-7072
    ISSN 0308-8146
    DOI 10.1016/j.foodchem.2018.07.129
    Database NAL-Catalogue (AGRICOLA)

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