Search results for: Constantini Samara

Items from 1 to 20 out of 51 results

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Submicron particle number doses in the human respiratory tract: implications for urban traffic and background environments

Aristeidis Voliotis, Constantini Samara

Environmental Science and Pollution Research > 2018 > 25 > 33 > 33724- 33735

The deposition of ambient submicron particles in the different parts of the human respiratory tract (HRT) was, for the first time, estimated for males and females from different age classes (children-adults-seniors) of urban population in the city of Thessaloniki, northern Greece, during the cold and the warm period of the year. Outdoor daily and hourly particle number doses in the different regions...

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Toxic organic substances and marker compounds in size-segregated urban particulate matter - Implications for involvement in the in vitro bioactivity of the extractable organic matter

Athanasios Besis, Alexandra Tsolakidou, Dimitra Balla, Constantini Samara, more

Environmental Pollution > 2017 > 230 > C > 758-774

Toxic organic substances and polar organic marker compounds, i.e. polychlorinated biphenyls (PCBs), organochlorine pesticides (OCPs), polybrominated diphenyl ethers (PBDEs), polycyclic aromatic hydrocarbons (PAHs) and their nitro-derivatives (N-PAHs), as well as dicarboxylic acids (DCAs) and sugars/sugar anhydrites (S/SAs) were analyzed in size-segregated PM samples (<0.49, 0.49–0.97, 0.97–3 and...

article

Legacy and novel brominated flame retardants in interior car dust – Implications for human exposure

Athanasios Besis, Christina Christia, Giulia Poma, Adrian Covaci, more

Environmental Pollution > 2017 > 230 > C > 871-881

Brominated flame retardants (BFRs) are organobromine compounds with an inhibitory effect on combustion chemistry tending to reduce the flammability of products. Concerns about health effects and environmental threats have led to phase-out or restrictions in the use of Penta-, Octa- and Deca-BDE technical formulations, increasing the demand for Novel BFRs (NBFRs) as replacements for the banned formulations...

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Polybrominated diphenyl ethers (PBDEs) in background air around the Aegean: implications for phase partitioning and size distribution

Athanasios Besis, Gerhard Lammel, Petr Kukučka, Constantini Samara, more

Environmental Science and Pollution Research > 2017 > 24 > 36 > 28102- 28120

The occurrence and atmospheric behavior of tri- to deca-polybrominated diphenyl ethers (PBDEs) were investigated during a 2-week campaign concurrently conducted in July 2012 at four background sites around the Aegean Sea. The study focused on the gas/particle (G/P) partitioning at three sites (Ag. Paraskevi/central Greece/suburban, Finokalia/southern Greece/remote coastal, and Urla/Turkey/rural coastal)...

article

New insights on humic-like substances associated with wintertime urban aerosols from central and southern Europe: Size-resolved chemical characterization and optical properties

Aristeidis Voliotis, Roman Prokeš, Gerhard Lammel, Constantini Samara

Atmospheric Environment > 2017 > 166 > C > 286-299

Although Humic-LIke Substances (HULIS) are important contributors to the mass of organic aerosol in airborne particulate matter (PM), little is known about their chemical composition, while, their size-resolved optical properties have not been studied yet. Here, HULIS fractions were isolated from size-resolved aerosol samples (≤0.49, 0.49–0.95, 0.95–3 and 3–10 μm) collected in urban and suburban environments...

article

Study of polar organic compounds in airborne particulate matter of a coastal urban city

Dimitra Balla, Dimitra Voutsa, Constantini Samara

Environmental Science and Pollution Research > 2018 > 25 > 13 > 12191- 12205

Two classes of polar organic compounds, dicarboxylic acids (DCAs) and sugars/sugar anhydrides (S/SAs), were measured in airborne particulate matter in the area of Thessaloniki, northern Greece. The target compounds were measured simultaneously in two particle fractions PM₁₀ and PM_2.5 during cold and warm periods by employing extraction in an ultrasonic bath with a mixture of MeOH/DCM (1:2 v/v), derivatization...

article

Secretoglobin 1A1 (SCGB1A1) protein expressed immunohistochemically in neonatal mice lung Club cells after exposure at heavy traffic sites in Northern Greece

Katerina Kaidoglou, Maria Bousnaki, Constantini Samara, Elpida-Niki Emmanouil-Nikoloussi

Reproductive Toxicology > 2017 > 72 > C > 24

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Chemical characterization and receptor modeling of PM₁₀ in the surroundings of the opencast lignite mines of Western Macedonia, Greece

Constantini Samara, George Argyropoulos, Theodoros Grigoratos, Αthanasios Kouras, more

Environmental Science and Pollution Research > 2018 > 25 > 13 > 12206- 12221

The Western Macedonian Lignite Center (WMLC) in northwestern Greece is the major lignite center in the Balkans feeding four major power plants of total power exceeding 4 GW. Concentrations of PM₁₀ (i.e., particulate matters with diameters ≤10 μm) are the main concern in the region, and the high levels observed are often attributed to the activities related to power generation. In this study, the contribution...

article

Fine and ultrafine particle doses in the respiratory tract from digital printing operations

Aristeidis Voliotis, Irene Karali, Athanasios Kouras, Constantini Samara

Environmental Science and Pollution Research > 2017 > 24 > 3 > 3027-3037

In this study, we report for the first time particle number doses in different parts of the human respiratory tract and real-time deposition rates for particles in the 10 nm to 10 μm size range emitted by digital printing operations. Particle number concentrations (PNCs) and size distribution were measured in a typical small-sized printing house using a NanoScan scanning mobility particle sizer and...

article

Cytotoxicity and genotoxicity induced in vitro by solvent-extractable organic matter of size-segregated urban particulate matter

Ekaterini Velali, Eleni Papachristou, Anastasia Pantazaki, Theodora Choli-Papadopoulou, more

Environmental Pollution > 2016 > 218 > C > 1350-1362

Three organic fractions of different polarity, including a non polar organic fraction (NPOF), a moderately polar organic fraction (MPOF), and a polar organic fraction (POF) were obtained from size-segregated (<0.49, 0.49–0.97, 0.97–3 and >3 μm) urban particulate matter (PM) samples, and tested for cytotoxicity and genotoxicity using a battery of in vitro assays. The cytotoxicity induced by the...

article

Source apportionment of the redox activity of urban quasi-ultrafine particles (PM0.49) in Thessaloniki following the increased biomass burning due to the economic crisis in Greece

Georgios Argyropoulos, Athanasios Besis, Dimitra Voutsa, Constantini Samara, more

Science of The Total Environment > 2016 > 568 > C > 124-136

The source apportionment of the redox activity of quasi-ultrafine particles (PM_0.49), measured by the cell-free dithiothreitol (DTT) assay, was attempted at two urban sites (urban traffic, UT and urban background, UB) in Thessaloniki, northern Greece, following the increased biomass burning due to the economic crisis. Both, the per-mass and per-volume DTT redox activities of PM_0.49 particles were...

article

Atmospheric occurrence and gas-particle partitioning of PBDEs at industrial, urban and suburban sites of Thessaloniki, northern Greece: Implications for human health

Athanasios Besis, Dimitra Voutsa, Constantini Samara

Environmental Pollution > 2016 > 215 > C > 113-124

Air samples were collected during the cold and the warm period of the year 2012 and 2013 at three sites in the major Thessaloniki area, northern Greece (urban-industrial, urban-traffic and urban-background) in order to evaluate the occurrence, profiles, seasonal variation and gas/particle partitioning of polybrominated diphenyl ethers (PBDEs). The mean total concentrations of particle phase ∑₁₂PBDE...

article

An iterative method for evaluating the inter-comparability between chemical mass balance and multivariate receptor models

George Argyropoulos, Constantini Samara, Evangelia Diapouli, Kostas Eleftheriadis

Chemometrics and Intelligent Laboratory Systems > 2016 > 155 > C > 97-108

A comparative study between Chemical Mass Balance (CMB) and multivariate receptor modeling techniques was conducted. The study involved common application of Robotic Chemical Mass Balance (RCMB) and 2-dimensional Positive Matrix Factorization (PMF). A two-fold methodology was developed for Source Apportionment (SA) of reactive species, in order to address previous limitations of CMB models. The developed...

article

Spatial and seasonal variations of the chemical, mineralogical and morphological features of quasi-ultrafine particles (PM0.49) at urban sites

Constantini Samara, Nikolaos Kantiranis, Panagiotis Kollias, Styliani Planou, more

Science of The Total Environment > 2016 > 553 > C > 392-403

Combining chemical and physical-structural information of particles is a key issue in PM investigations. Chemical, mineralogical, and morphological characterization of quasi-ultrafine particles (PM_0.49) was carried out at two urban sites of varying traffic-influence (roadside and urban background) in Thessaloniki, northern Greece, during the cold and the warm period of 2013. Bulk analyses of chemical...

article

Redox activity and in vitro bioactivity of the water-soluble fraction of urban particulate matter in relation to particle size and chemical composition

Ekaterini Velali, Eleni Papachristou, Anastasia Pantazaki, Theodora Choli-Papadopoulou, more

Environmental Pollution > 2016 > 208 > Part B > 774-786

Chemical and toxicological characterization of the water-soluble fraction of size-segregated urban particulate matter (PM) (<0.49, 0.49–0.97, 0.97–1.5, 1.5–3.0, 3.0–7.2 and >7.2 μm) was carried out at two urban sites, traffic and urban background, during the cold and the warm period. Chemical analysis of the water-soluble PM fraction included ionic species (NO3−, SO42−, Cl⁻, Na⁺, NH₄ ⁺...

article

Polycyclic aromatic hydrocarbons (PAHs) at traffic and urban background sites of northern Greece: source apportionment of ambient PAH levels and PAH-induced lung cancer risk

Evangelia Manoli, Athanasios Kouras, Olga Karagkiozidou, Georgios Argyropoulos, more

Environmental Science and Pollution Research > 2016 > 23 > 4 > 3556-3568

Thirteen particle-phase PAHs, including nine >4-ring congeners [Benz[a]anthracene (BaAn), Chrysene (Chry), Benzo[b]fluoranthene (BbF), Benzo[k]fluoranthene (BkF), Benzo[e]pyrene (BeP), Benzo[a]pyrene (BaP), Dibenzo[a,h]anthracene (dBaAn), Benzo[g,h,i]perylene (BghiPe), Indeno(1,2,3-c,d)pyrene (IP)], listed by IARC (International Agency for Research on Cancer) as class 1, class 2A, and 2B carcinogens,...

article

Ultrastructural observations of adult and breastfeeding Balb/C mice lung tissues after exposure to airborne pollutants at heavy traffic sites (poster)

Maria Bousnaki, Chrysanthi Simou, Katerina Kaidoglou, Athanasios Kouras, more

Reproductive Toxicology > 2015 > 57 > Complete > 226-227

article

Ultrastructural alterations in the mouse lung caused by real-life ambient PM10 at urban traffic sites

Constantini Samara, Athanasios Kouras, Katerina Kaidoglou, Elpida-Niki Emmanouil-Nikoloussi, more

Science of The Total Environment > 2015 > 532 > C > 327-336

Current levels of ambient air particulate matter (PM) are associated with mortality and morbidity in urban populations worldwide. Nevertheless, current knowledge does not allow precise quantification or definitive ranking of the health effects of individual PM components and indeed, associations may be the result of multiple components acting on different physiological mechanisms. In this paper, healthy...

article

Effects of airborne pollutants on the neonatal mice lung, after exposure at a heavy traffic site in northern Greece

Maria Bousnaki, Chrysanthi Simou, Katerina Kaidoglou, Athanasios Kouras, more

Reproductive Toxicology > 2015 > 56 > Complete > 24-25

article

Particle-size distribution of polybrominated diphenyl ethers (PBDEs) in the urban agglomeration of Thessaloniki, northern Greece

Athanasios Besis, Elisavet Botsaropoulou, Dimitra Voutsa, Constantini Samara

Atmospheric Environment > 2015 > 104 > C > 176-185

The size distribution of Polybrominated Diphenyl Ethers (PBDEs) in particle sizes <0.49, 0.49–0.97, 0.97–1.5, 1.5–3.0, 3.0–7.2 and >7.2 μm was measured during the cold and the warm period of the year 2013 at traffic and background sites in the urban agglomeration of Thessaloniki, northern Greece. Mean aggregate concentrations (sum of six particle fractions) of the sum of 12 PBDE congeners (∑...

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Search results for: Constantini Samara

Submicron particle number doses in the human respiratory tract: implications for urban traffic and background environments

Toxic organic substances and marker compounds in size-segregated urban particulate matter - Implications for involvement in the in vitro bioactivity of the extractable organic matter

Legacy and novel brominated flame retardants in interior car dust – Implications for human exposure

Polybrominated diphenyl ethers (PBDEs) in background air around the Aegean: implications for phase partitioning and size distribution

New insights on humic-like substances associated with wintertime urban aerosols from central and southern Europe: Size-resolved chemical characterization and optical properties

Study of polar organic compounds in airborne particulate matter of a coastal urban city

Secretoglobin 1A1 (SCGB1A1) protein expressed immunohistochemically in neonatal mice lung Club cells after exposure at heavy traffic sites in Northern Greece

Chemical characterization and receptor modeling of PM₁₀ in the surroundings of the opencast lignite mines of Western Macedonia, Greece

Fine and ultrafine particle doses in the respiratory tract from digital printing operations

Cytotoxicity and genotoxicity induced in vitro by solvent-extractable organic matter of size-segregated urban particulate matter

Source apportionment of the redox activity of urban quasi-ultrafine particles (PM0.49) in Thessaloniki following the increased biomass burning due to the economic crisis in Greece

Atmospheric occurrence and gas-particle partitioning of PBDEs at industrial, urban and suburban sites of Thessaloniki, northern Greece: Implications for human health

An iterative method for evaluating the inter-comparability between chemical mass balance and multivariate receptor models

Spatial and seasonal variations of the chemical, mineralogical and morphological features of quasi-ultrafine particles (PM0.49) at urban sites

Redox activity and in vitro bioactivity of the water-soluble fraction of urban particulate matter in relation to particle size and chemical composition

Polycyclic aromatic hydrocarbons (PAHs) at traffic and urban background sites of northern Greece: source apportionment of ambient PAH levels and PAH-induced lung cancer risk

Ultrastructural observations of adult and breastfeeding Balb/C mice lung tissues after exposure to airborne pollutants at heavy traffic sites (poster)

Ultrastructural alterations in the mouse lung caused by real-life ambient PM10 at urban traffic sites

Effects of airborne pollutants on the neonatal mice lung, after exposure at a heavy traffic site in northern Greece

Particle-size distribution of polybrominated diphenyl ethers (PBDEs) in the urban agglomeration of Thessaloniki, northern Greece

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