Atmospheric Biodetection Part I: Study of Airborne Bacterial Concentrations from January 2018 to May 2020 at Saclay, France

Sarda‐Estève, Roland; Baisnée, Dominique; Guinot, Benjamin; Mainelis, Gediminas; Sodeau, John R.; O’Connor, David J.; Besancenot, Jean Pierre; Thibaudon, M.; Monteiro, Sara; Petit, Jean-Eudes; Gros, Valérie

doi:10.3390/ijerph17176292

Cited by 6 publications

(5 citation statements)

References 105 publications

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“…A variant of the two-dimension Non-parametric Wind Regression (NWR) known as Sustained Wind Incidence Method (SWIM) was used, originally developed by Henry et al ( 2009 ) and later adapted by Olson et al ( 2012 ), known as the Sustained Wind Incidence Method (SWIM). This method has been successfully applied to determine the geographical origins of pollen, fungal spores and bacteria (Sarda-Estève et al, 2018 , 2019 , 2020 ). The approach is similar to wind air pollution roses but takes the standard deviation of the wind speed and the wind direction into account.…”

Section: Methodsmentioning

confidence: 99%

“…The resulting wind rose diagrams can provide information on the spatial origins of the pollen. The same approach was recently used to assess the temporal variability and geographical origin of ambient bioaerosols, particularly pollen (Sarda- Estève et al, 2018Estève et al, , 2019Estève et al, , 2020.…”

Section: Source -Receptor Model Outputs For Dublin: Prevailing Wind D...mentioning

confidence: 99%

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A comprehensive aerobiological study of the airborne pollen in the Irish environment

et al. 2022

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Respiratory allergies triggered by pollen allergens represent a significant health concern to the Irish public. Up to now, Ireland has largely refrained from participating in long-term aerobiological studies. Recently, pollen monitoring has commenced in several sampling locations around Ireland. The first results of the pollen monitoring campaigns for Dublin (urban) and Carlow (rural) concerning the period 2017–2019 and 2018–2019, respectively, are presented herein. Additional unpublished pollen data from 1978–1980 and, 2010–2011 were also incorporated in creating the first pollen calendar for Dublin. During the monitoring period over 60 pollen types were identified with an average Annual Pollen Integral (APIn) of 32,217 Pollen × day/m3 for Dublin and 78,411 Pollen × day/m3 for Carlow. The most prevalent pollen types in Dublin were: Poaceae (32%), Urticaceae (29%), Cupressaceae/Taxaceae (11%), Betula (10%), Quercus (4%), Pinus (3%), Fraxinus (2%), Alnus (2%) and Platanus (1%). The predominant pollen types in Carlow were identified as Poaceae (70%), Urticaceae (12%), Betula (10%), Quercus (2%), Fraxinus (1%) and Pinus (1%). These prevalent pollen types increased in annual pollen concentration in both locations from 2018 to 2019 except for Fraxinus. Although higher pollen concentrations were observed for the Carlow (rural) site a greater variety of pollen types were identified for the Dublin (urban) site. The general annual trend in the pollen season began with the release of tree pollen in early spring, followed by the release of grass and herbaceous pollen which dominated the summer months with the annual pollen season coming to an end in October. This behaviour was illustrated for 21 different pollen types in the Dublin pollen calendar. The correlation between ambient pollen concentration and meteorological parameters was also examined and differed greatly depending on the location and study year. A striking feature was a substantial fraction of the recorded pollen sampled in Dublin did not correlate with the prevailing wind directions. However, using non-parametric wind regression, specific source regions could be determined such as Alnus originating from the Southeast, Betula originating from the East and Poaceae originating from the Southwest.

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Section: Methodsmentioning

confidence: 99%

Section: Source -Receptor Model Outputs For Dublin: Prevailing Wind D...mentioning

confidence: 99%

A comprehensive aerobiological study of the airborne pollen in the Irish environment

et al. 2022

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“…The scope of both studies encompasses 4-5 years of monitoring data including the 2017 period investigated herein. In addition, ambient bacterial concentrations have also been monitored recently in Saclay [58].…”

Section: An Overview Of Pollen and Fungal Spore Concentrations Determ...mentioning

confidence: 99%

A Modified Spectroscopic Approach for the Real-Time Detection of Pollen and Fungal Spores at a Semi-Urban Site Using the WIBS-4+, Part I

Markey

Clancy

Martínez-Bracero

et al. 2022

Sensors

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The real-time monitoring of primary biological aerosol particles (PBAP) such as pollen and fungal spores has received much attention in recent years as a result of their health and climatic effects. In this study, the Wideband Integrated Bioaerosol Sensor (WIBS) 4+ model was evaluated for its ability to sample and detect ambient fungal spore and pollen concentrations, compared to the traditional Hirst volumetric method. Although the determination of total pollen and fungal spore ambient concentrations are of interest, the selective detection of individual pollen/fungal spore types are often of greater allergenic/agricultural concern. To aid in this endeavour, modifications were made to the WIBS-4 instrument to target chlorophyll fluorescence. Two additional fluorescence channels (FL4 and FL5 channels) were combined with the standard WIBS channels (FL1, FL2, FL3). The purpose of this modification is to help discriminate between grass and herb pollen from other pollen. The WIBS-4+ was able to successfully detect and differentiate between different bioaerosol classes. The addition of the FL4 and FL5 channels also allowed for the improved differentiation between tree (R2 = 0.8), herbaceous (R2 = 0.6) and grass (R2 = 0.4) pollen and fungal spores (R2 = 0.8). Both grass and herbaceous pollen types showed a high correlation with D type particles, showing strong fluorescence in the FL4 channel. The additional fluorescent data that were introduced also improved clustering attempts, making k-means clustering a comparable solution for this high-resolution data.

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“…Besides anthropogenic activities, vegetation may also be a substantial contributor to primary OM emissions [88,89]. The large number of CARA stations, combined with many other series of samples from specific complementary programs, has made it possible to produce a national synthesis on the importance of such emissions in the PM 10 fraction.…”

Section: Primary Biogenic Organic Aerosols (Pboa)mentioning

confidence: 99%

Overview of the French Operational Network for In Situ Observation of PM Chemical Composition and Sources in Urban Environments (CARA Program)

et al. 2021

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The CARA program has been running since 2008 by the French reference laboratory for air quality monitoring (LCSQA) and the regional monitoring networks, to gain better knowledge—at a national level—on particulate matter (PM) chemistry and its diverse origins in urban environments. It results in strong collaborations with international-level academic partners for state-of-the-art, straightforward, and robust results and methodologies within operational air quality stakeholders (and subsequently, decision makers). Here, we illustrate some of the main outputs obtained over the last decade, thanks to this program, regarding methodological aspects (both in terms of measurement techniques and data treatment procedures) as well as acquired knowledge on the predominant PM sources. Offline and online methods are used following well-suited quality assurance and quality control procedures, notably including inter-laboratory comparison exercises. Source apportionment studies are conducted using various receptor modeling approaches. Overall, the results presented herewith underline the major influences of residential wood burning (during the cold period) and road transport emissions (exhaust and non-exhaust ones, all throughout the year), as well as substantial contributions of mineral dust and primary biogenic particles (mostly during the warm period). Long-range transport phenomena, e.g., advection of secondary inorganic aerosols from the European continental sector and of Saharan dust into the French West Indies, are also discussed in this paper. Finally, we briefly address the use of stable isotope measurements (δ15N) and of various organic molecular markers for a better understanding of the origins of ammonium and of the different organic aerosol fractions, respectively.

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Atmospheric Biodetection Part I: Study of Airborne Bacterial Concentrations from January 2018 to May 2020 at Saclay, France

Cited by 6 publications

References 105 publications

A comprehensive aerobiological study of the airborne pollen in the Irish environment

A comprehensive aerobiological study of the airborne pollen in the Irish environment

A Modified Spectroscopic Approach for the Real-Time Detection of Pollen and Fungal Spores at a Semi-Urban Site Using the WIBS-4+, Part I

Overview of the French Operational Network for In Situ Observation of PM Chemical Composition and Sources in Urban Environments (CARA Program)

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