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Daniel R Thévenot - One of the best experts on this subject based on the ideXlab platform.
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Decrease of Atmospheric Deposition of heavy metals in an urban area from 1994 to 2002 (Paris, France)
Chemosphere, 2005Co-Authors: Sam Azimi, Vincent Rocher, Stéphane Garnaud, Gilles Varrault, Daniel R ThévenotAbstract:Total Atmospheric Deposition, i.e. both wet and dry ones, was sampled during three different sampling periods between 1994 and 2002. The aim of this study is to determine the temporal variation of the Atmospheric Deposition fluxes of four heavy metals (Cd, Cu, Pb and Zn) in an urban area (Paris region, France). The global pattern shows a decrease of the fluxes for most of elements during this period. Indeed, the Atmospheric Deposition fluxes measured in 2001–2002 were lower than those measured during the 1994–1997 period by factors reaching 16, 2.5, 4 and 7.5 at Créteil and 7, 1, 6 and 4.5 at Chatou for Cd, Cu, Pb and Zn, respectively. At the Paris site, the decreasing factors were 2.5 and 3 for Cd and Pb, respectively while Cu and Zn fluxes were nearly similar during the whole studied period.
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Sources, distribution and variability of hydrocarbons and metals in Atmospheric Deposition in an urban area (Paris, France)
Science of The Total Environment, 2004Co-Authors: Sam Azimi, Vincent Rocher, Mathieu Muller, Régis Moilleron, Daniel R ThévenotAbstract:Total Atmospheric Deposition, i.e., both wet and dry Deposition, was sampled during 11 months in the "Ile-de-France" region, France. Monthly fluxes of aliphatic hydrocarbons (AHs), polycyclic aromatic hydrocarbons (PAHs) and heavy metals (HMs) were studied at three representative sites (two urbanised and one semiurban). A combination of spatial and temporal variability of total fluxes and pollutant fingerprints allows a better understanding of Atmospheric pollutant dynamics over this region. In the whole studied area, aggregated total Atmospheric fluxes of AHs, PAHs and HMs range from 19 to 33 mg m -2 y -1 , 99 to 161 µg m -2 y -1 and 48 to 103 mg m -2 y -1 , respectively. The highest values are observed in Paris centre, reflecting the importance of the urban centre as a source of pollutants, with a decline in many Atmospheric deposits when moving away from urban areas. The seasonal distribution of these pollutants suggests the impact of residential heating on urban Atmospheric Deposition of hydrocarbons and the increase of dust loads containing HMs during summer. The qualitative study performed on Atmospheric Deposition data highlights the main sources of pollutants. Aliphatic fingerprints suggest a marked contribution of biogenic inputs to aliphatic contamination in the whole Ile-de-France region and slight petroleum inputs in urban areas. Aromatic fingerprints, characterised by the great predominance of phenanthrene, fluoranthene and pyrene, associated with some specific ratio values, suggest the mixture of petrogenic and pyrolytic contaminations of Atmospheric Deposition in the whole "Ile-de-France" region. HM distribution shows the presence of anthropogenic sources of Al and Fe in this area and the stationary sources (incinerators and plants) as a significant source of Si, S and Sb in the urban atmosphere. Moreover, a pollutant mix phenomenon, occurring in such an urban atmosphere, shows a significant influence on Atmospheric Deposition at the semiurban site.
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Trace metal determination in total Atmospheric Deposition in rural and urban areas.
The Science of the total environment, 2003Co-Authors: Sam Azimi, Alexandre Ludwig, Daniel R Thévenot, Jean-louis ColinAbstract:The wet, dry and total Atmospheric Depositions of some metals (Al, Cd, Cr, Cu, Fe, Na, Pb and Zn) were sampled at two sites and Atmospheric fallout fluxes were determined for these locations. This work, led by two different research groups, allowed to reach two main goals: to define a simple analytical procedure to secure accurate shipboard sampling and analysis of Atmospheric Deposition, and to assess anthropogenic impacts of heavy metals to the environment. The first step about the validation step showed that the prevalent Deposition type was dry Deposition which represents 40, 60 and 80% for Cd, Cu and Pb, respectively. This prevalence of dry Deposition in total Atmospheric fallout supported the necessity of funnel wall rinsing which contains 30, 50 and 40% of collected Cd, Cu and Pb, respectively. Moreover, the reproducibility of Atmospheric Deposition collection was determined. The second step was performed by comparing two sampling sites. A rural sampling site, situated in Morvan's regional park (250 km south-east of Paris), was chosen for its isolation from any local and regional contamination sources. Fluxes obtained in this area were compared with those obtained at an urban site (Créteil, suburb of Paris) allowing comparison between urban and rural areas and demonstrating the impact of anthropogenic activities on Atmospheric Deposition of Cr, Cu and Pb.
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Trace metal determination in total Atmospheric Deposition in rural and urban areas.
Science of The Total Environment, 2003Co-Authors: Sam Azimi, Alexandre Ludwig, Daniel R Thévenot, Jean-louis ColinAbstract:The wet, dry and total Atmospheric Depositions of some metals (Al, Cd, Cr, Cu, Fe, Na, Pb and Zn) were sampled at two sites and Atmospheric fallout fluxes were determined for these locations. This work, led by two different research groups, allowed to reach two main goals: to define a simple analytical procedure to secure accurate shipboard sampling and analysis of Atmospheric Deposition, and to assess anthropogenic impacts of heavy metals to the environment. The first step about the validation step showed that the prevalent Deposition type was dry Deposition which represents 40, 60 and 80% for Cd, Cu and Pb, respectively. This prevalence of dry Deposition in total Atmospheric fallout supported the necessity of funnel wall rinsing which contains 30, 50 and 40% of collected Cd, Cu and Pb, respectively. Moreover, the reproducibility of Atmospheric Deposition collection was determined. The second step was performed by comparing two sampling sites. A rural sampling site, situated in Morvan's regional park (250 km south-east of Paris), was chosen for its isolation from any local and regional contamination sources. Fluxes obtained in this area were compared with those obtained at an urban site (Creteil, suburb of Paris) allowing comparison between urban and rural areas and demonstrating the impact of anthropogenic activities on Atmospheric Deposition of Cr, Cu and Pb.
Sam Azimi - One of the best experts on this subject based on the ideXlab platform.
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Decrease of Atmospheric Deposition of heavy metals in an urban area from 1994 to 2002 (Paris, France)
Chemosphere, 2005Co-Authors: Sam Azimi, Vincent Rocher, Stéphane Garnaud, Gilles Varrault, Daniel R ThévenotAbstract:Total Atmospheric Deposition, i.e. both wet and dry ones, was sampled during three different sampling periods between 1994 and 2002. The aim of this study is to determine the temporal variation of the Atmospheric Deposition fluxes of four heavy metals (Cd, Cu, Pb and Zn) in an urban area (Paris region, France). The global pattern shows a decrease of the fluxes for most of elements during this period. Indeed, the Atmospheric Deposition fluxes measured in 2001–2002 were lower than those measured during the 1994–1997 period by factors reaching 16, 2.5, 4 and 7.5 at Créteil and 7, 1, 6 and 4.5 at Chatou for Cd, Cu, Pb and Zn, respectively. At the Paris site, the decreasing factors were 2.5 and 3 for Cd and Pb, respectively while Cu and Zn fluxes were nearly similar during the whole studied period.
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Sources, distribution and variability of hydrocarbons and metals in Atmospheric Deposition in an urban area (Paris, France)
Science of The Total Environment, 2004Co-Authors: Sam Azimi, Vincent Rocher, Mathieu Muller, Régis Moilleron, Daniel R ThévenotAbstract:Total Atmospheric Deposition, i.e., both wet and dry Deposition, was sampled during 11 months in the "Ile-de-France" region, France. Monthly fluxes of aliphatic hydrocarbons (AHs), polycyclic aromatic hydrocarbons (PAHs) and heavy metals (HMs) were studied at three representative sites (two urbanised and one semiurban). A combination of spatial and temporal variability of total fluxes and pollutant fingerprints allows a better understanding of Atmospheric pollutant dynamics over this region. In the whole studied area, aggregated total Atmospheric fluxes of AHs, PAHs and HMs range from 19 to 33 mg m -2 y -1 , 99 to 161 µg m -2 y -1 and 48 to 103 mg m -2 y -1 , respectively. The highest values are observed in Paris centre, reflecting the importance of the urban centre as a source of pollutants, with a decline in many Atmospheric deposits when moving away from urban areas. The seasonal distribution of these pollutants suggests the impact of residential heating on urban Atmospheric Deposition of hydrocarbons and the increase of dust loads containing HMs during summer. The qualitative study performed on Atmospheric Deposition data highlights the main sources of pollutants. Aliphatic fingerprints suggest a marked contribution of biogenic inputs to aliphatic contamination in the whole Ile-de-France region and slight petroleum inputs in urban areas. Aromatic fingerprints, characterised by the great predominance of phenanthrene, fluoranthene and pyrene, associated with some specific ratio values, suggest the mixture of petrogenic and pyrolytic contaminations of Atmospheric Deposition in the whole "Ile-de-France" region. HM distribution shows the presence of anthropogenic sources of Al and Fe in this area and the stationary sources (incinerators and plants) as a significant source of Si, S and Sb in the urban atmosphere. Moreover, a pollutant mix phenomenon, occurring in such an urban atmosphere, shows a significant influence on Atmospheric Deposition at the semiurban site.
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Hydrocarbons and Metals in Atmospheric Deposition and Roof Runoff in Central Paris
Water Air & Soil Pollution, 2004Co-Authors: Vincent Rocher, Sam Azimi, Johnny Gasperi, Loïc Beuvin, Mathieu Muller, Régis Moilleron, Ghassan ChebboAbstract:Hydrocarbons (aliphatic and aromatic) and metals (heavy metals and major elements) were measured in both Atmospheric Deposition and roof runoff in central Paris (France). Atmospheric Deposition (wet and dry) was collected from December 2001 to October 2002 and roof runoff was sampled on three buildings with different covering materials, i.e., slate tiles and zinc sheets. This paper gives an overview of the results on the flux and distribution points of view for both Atmospheric Deposition and roof runoff. Results show that Atmospheric fluxes of hydrocarbons and major elements increase during cold seasons, due to residential heating occurrence, while heavy metals, whose major sources have constant emission fluxes, exhibit steady Atmospheric loads throughout the year. Moreover, hydrocarbon fingerprints reveal mainly biogenic and pyrolytic origins for aliphatic and aromatic hydrocarbons, respectively. The results about roof runoff contamination suggest that the scavenging processes for hydrocarbons and metals are dependent on rainfall amount rather than on the rain event characteristics (number, intensity, duration), and dry Deposition weakly contributes to the pollutant loads in roof runoff. Results also highlight that both metallic and slate roofs do not act as a source of hydrocarbons and major elements—exclusively originating from Atmospheric Deposition—while they act as a source of some heavy metals. Zinc-covered roofs largely release Zn and Ti, while slate roofs mainly release Pb, Ti and Cu. Whatever the material used for roof covering, roof runoff presents high Ni and V loads due to the vicinity of the chimney stacks of heating boilers.
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Trace metal determination in total Atmospheric Deposition in rural and urban areas.
The Science of the total environment, 2003Co-Authors: Sam Azimi, Alexandre Ludwig, Daniel R Thévenot, Jean-louis ColinAbstract:The wet, dry and total Atmospheric Depositions of some metals (Al, Cd, Cr, Cu, Fe, Na, Pb and Zn) were sampled at two sites and Atmospheric fallout fluxes were determined for these locations. This work, led by two different research groups, allowed to reach two main goals: to define a simple analytical procedure to secure accurate shipboard sampling and analysis of Atmospheric Deposition, and to assess anthropogenic impacts of heavy metals to the environment. The first step about the validation step showed that the prevalent Deposition type was dry Deposition which represents 40, 60 and 80% for Cd, Cu and Pb, respectively. This prevalence of dry Deposition in total Atmospheric fallout supported the necessity of funnel wall rinsing which contains 30, 50 and 40% of collected Cd, Cu and Pb, respectively. Moreover, the reproducibility of Atmospheric Deposition collection was determined. The second step was performed by comparing two sampling sites. A rural sampling site, situated in Morvan's regional park (250 km south-east of Paris), was chosen for its isolation from any local and regional contamination sources. Fluxes obtained in this area were compared with those obtained at an urban site (Créteil, suburb of Paris) allowing comparison between urban and rural areas and demonstrating the impact of anthropogenic activities on Atmospheric Deposition of Cr, Cu and Pb.
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Trace metal determination in total Atmospheric Deposition in rural and urban areas.
Science of The Total Environment, 2003Co-Authors: Sam Azimi, Alexandre Ludwig, Daniel R Thévenot, Jean-louis ColinAbstract:The wet, dry and total Atmospheric Depositions of some metals (Al, Cd, Cr, Cu, Fe, Na, Pb and Zn) were sampled at two sites and Atmospheric fallout fluxes were determined for these locations. This work, led by two different research groups, allowed to reach two main goals: to define a simple analytical procedure to secure accurate shipboard sampling and analysis of Atmospheric Deposition, and to assess anthropogenic impacts of heavy metals to the environment. The first step about the validation step showed that the prevalent Deposition type was dry Deposition which represents 40, 60 and 80% for Cd, Cu and Pb, respectively. This prevalence of dry Deposition in total Atmospheric fallout supported the necessity of funnel wall rinsing which contains 30, 50 and 40% of collected Cd, Cu and Pb, respectively. Moreover, the reproducibility of Atmospheric Deposition collection was determined. The second step was performed by comparing two sampling sites. A rural sampling site, situated in Morvan's regional park (250 km south-east of Paris), was chosen for its isolation from any local and regional contamination sources. Fluxes obtained in this area were compared with those obtained at an urban site (Creteil, suburb of Paris) allowing comparison between urban and rural areas and demonstrating the impact of anthropogenic activities on Atmospheric Deposition of Cr, Cu and Pb.
Jean-louis Colin - One of the best experts on this subject based on the ideXlab platform.
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Trace metal determination in total Atmospheric Deposition in rural and urban areas.
The Science of the total environment, 2003Co-Authors: Sam Azimi, Alexandre Ludwig, Daniel R Thévenot, Jean-louis ColinAbstract:The wet, dry and total Atmospheric Depositions of some metals (Al, Cd, Cr, Cu, Fe, Na, Pb and Zn) were sampled at two sites and Atmospheric fallout fluxes were determined for these locations. This work, led by two different research groups, allowed to reach two main goals: to define a simple analytical procedure to secure accurate shipboard sampling and analysis of Atmospheric Deposition, and to assess anthropogenic impacts of heavy metals to the environment. The first step about the validation step showed that the prevalent Deposition type was dry Deposition which represents 40, 60 and 80% for Cd, Cu and Pb, respectively. This prevalence of dry Deposition in total Atmospheric fallout supported the necessity of funnel wall rinsing which contains 30, 50 and 40% of collected Cd, Cu and Pb, respectively. Moreover, the reproducibility of Atmospheric Deposition collection was determined. The second step was performed by comparing two sampling sites. A rural sampling site, situated in Morvan's regional park (250 km south-east of Paris), was chosen for its isolation from any local and regional contamination sources. Fluxes obtained in this area were compared with those obtained at an urban site (Créteil, suburb of Paris) allowing comparison between urban and rural areas and demonstrating the impact of anthropogenic activities on Atmospheric Deposition of Cr, Cu and Pb.
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Trace metal determination in total Atmospheric Deposition in rural and urban areas.
Science of The Total Environment, 2003Co-Authors: Sam Azimi, Alexandre Ludwig, Daniel R Thévenot, Jean-louis ColinAbstract:The wet, dry and total Atmospheric Depositions of some metals (Al, Cd, Cr, Cu, Fe, Na, Pb and Zn) were sampled at two sites and Atmospheric fallout fluxes were determined for these locations. This work, led by two different research groups, allowed to reach two main goals: to define a simple analytical procedure to secure accurate shipboard sampling and analysis of Atmospheric Deposition, and to assess anthropogenic impacts of heavy metals to the environment. The first step about the validation step showed that the prevalent Deposition type was dry Deposition which represents 40, 60 and 80% for Cd, Cu and Pb, respectively. This prevalence of dry Deposition in total Atmospheric fallout supported the necessity of funnel wall rinsing which contains 30, 50 and 40% of collected Cd, Cu and Pb, respectively. Moreover, the reproducibility of Atmospheric Deposition collection was determined. The second step was performed by comparing two sampling sites. A rural sampling site, situated in Morvan's regional park (250 km south-east of Paris), was chosen for its isolation from any local and regional contamination sources. Fluxes obtained in this area were compared with those obtained at an urban site (Creteil, suburb of Paris) allowing comparison between urban and rural areas and demonstrating the impact of anthropogenic activities on Atmospheric Deposition of Cr, Cu and Pb.
Hongzhen Ran - One of the best experts on this subject based on the ideXlab platform.
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Atmospheric Deposition as a source of cadmium and lead to soil-rice system and associated risk assessment.
Ecotoxicology and environmental safety, 2019Co-Authors: Wenli Feng, Zhaohui Guo, Xiyuan Xiao, Chi Peng, Lei Shi, Hongzhen RanAbstract:Abstract Atmospheric Deposition of heavy metals is widely documented and has been connected to adverse ecological and health impacts. The influence of Atmospheric Deposition on the soil–rice system in a typical urban agglomeration region was studied continuously through a field contrast experiment for two years. The results showed that the Cd and Pb in rice grains is mainly from soil, but Cd and Pb from the Atmospheric Deposition should be a focus of attention. The bioavailable content of heavy metals in Atmospheric Deposition is higher than that in corresponding surface soil. Atmospheric Deposition contributed 10.8–47.7% of the Cd and Pb in brown rice, and 13.7–60.3% of the Cd and Pb in rice leaves was from Atmospheric Deposition. In the traffic area, a high Deposition site, the contributions of Atmospheric Depositions to heavy metals in rice plants were higher than those from abandoned mine area and suburban area. Atmospheric Deposition also consistently decreased the pH (0.17–0.66) and increased the exchangeable Cd (27.1–62.1%) and Pb (3.3–26.1%) in surface soil. In addition, the health risk index (HRI) of rice consumption was also increased as a result of the different Atmospheric Depositions of heavy metals, which accounted for 40.0% and 35.5% of Cd and Pb at the high Deposition site, respectively. These findings demonstrate the potential influences of Atmospheric Deposition on the soil–crop system and human health, and can also provide a useful reference for developing the emission control strategies.
Alexandre Ludwig - One of the best experts on this subject based on the ideXlab platform.
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Trace metal determination in total Atmospheric Deposition in rural and urban areas.
The Science of the total environment, 2003Co-Authors: Sam Azimi, Alexandre Ludwig, Daniel R Thévenot, Jean-louis ColinAbstract:The wet, dry and total Atmospheric Depositions of some metals (Al, Cd, Cr, Cu, Fe, Na, Pb and Zn) were sampled at two sites and Atmospheric fallout fluxes were determined for these locations. This work, led by two different research groups, allowed to reach two main goals: to define a simple analytical procedure to secure accurate shipboard sampling and analysis of Atmospheric Deposition, and to assess anthropogenic impacts of heavy metals to the environment. The first step about the validation step showed that the prevalent Deposition type was dry Deposition which represents 40, 60 and 80% for Cd, Cu and Pb, respectively. This prevalence of dry Deposition in total Atmospheric fallout supported the necessity of funnel wall rinsing which contains 30, 50 and 40% of collected Cd, Cu and Pb, respectively. Moreover, the reproducibility of Atmospheric Deposition collection was determined. The second step was performed by comparing two sampling sites. A rural sampling site, situated in Morvan's regional park (250 km south-east of Paris), was chosen for its isolation from any local and regional contamination sources. Fluxes obtained in this area were compared with those obtained at an urban site (Créteil, suburb of Paris) allowing comparison between urban and rural areas and demonstrating the impact of anthropogenic activities on Atmospheric Deposition of Cr, Cu and Pb.
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Trace metal determination in total Atmospheric Deposition in rural and urban areas.
Science of The Total Environment, 2003Co-Authors: Sam Azimi, Alexandre Ludwig, Daniel R Thévenot, Jean-louis ColinAbstract:The wet, dry and total Atmospheric Depositions of some metals (Al, Cd, Cr, Cu, Fe, Na, Pb and Zn) were sampled at two sites and Atmospheric fallout fluxes were determined for these locations. This work, led by two different research groups, allowed to reach two main goals: to define a simple analytical procedure to secure accurate shipboard sampling and analysis of Atmospheric Deposition, and to assess anthropogenic impacts of heavy metals to the environment. The first step about the validation step showed that the prevalent Deposition type was dry Deposition which represents 40, 60 and 80% for Cd, Cu and Pb, respectively. This prevalence of dry Deposition in total Atmospheric fallout supported the necessity of funnel wall rinsing which contains 30, 50 and 40% of collected Cd, Cu and Pb, respectively. Moreover, the reproducibility of Atmospheric Deposition collection was determined. The second step was performed by comparing two sampling sites. A rural sampling site, situated in Morvan's regional park (250 km south-east of Paris), was chosen for its isolation from any local and regional contamination sources. Fluxes obtained in this area were compared with those obtained at an urban site (Creteil, suburb of Paris) allowing comparison between urban and rural areas and demonstrating the impact of anthropogenic activities on Atmospheric Deposition of Cr, Cu and Pb.