Birch pollen rupture and the release of aerosols of respirable allergens

Taylor, Philip; Flagan, Richard C.; Miguel, Antonio H.; Valenta, Rudolf; Glovsky, M. Michael

doi:10.1111/j.1365-2222.2004.02078.x

Cited by 192 publications

(167 citation statements)

References 33 publications

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“…In this study, the FAA concentrations increased in all the size fractions (Fig. 1), possibly due to rupture of relatively large (∼ 30 µm) pollen grains (Taylor et al, 2004;Visez et al, 2015), supported by visibly yellow impactor plates in all the size fractions. During the peak in FAA and bacteria concentrations, the air masses were arriving in Hyytiälä from eastern Europe and the Baltic Sea.…”

Section: Overview Of Meteorological Factors and Sourcessupporting

confidence: 50%

Characterization of free amino acids, bacteria and fungi in size-segregated atmospheric aerosols in boreal forest: seasonal patterns, abundances and size distributions

et al. 2017

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Abstract. Primary biological aerosol particles (PBAPs) are ubiquitous in the atmosphere and constitute ∼ 30 % of atmospheric aerosol particle mass in sizes > 1 µm. PBAP components, such as bacteria, fungi and pollen, may affect the climate by acting as cloud-active particles, thus having an effect on cloud and precipitation formation processes. In this study, size-segregated aerosol samples (< 1.0, 1-2.5, 2.5-10 and > 10 µm) were collected in boreal forest (Hyytiälä, Finland) during a 9-month period covering all seasons and analysed for free amino acids (FAAs), DNA concentration and microorganism (bacteria, Pseudomonas and fungi). Measurements were performed using tandem mass spectrometry, spectrophotometry and qPCR, respectively. Meteorological parameters and statistical analysis were used to study their atmospheric implication for results. Distinct annual patterns of PBAP components were observed, late spring and autumn being seasons of dominant occurrence. Elevated abundances of FAAs and bacteria were observed during the local pollen season, whereas fungi were observed at the highest level during autumn. Meteorological parameters such as air and soil temperature, radiation and rainfall were observed to possess a close relationship with PBAP abundances on an annual scale.

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Section: Overview Of Meteorological Factors and Sourcessupporting

confidence: 50%

Characterization of free amino acids, bacteria and fungi in size-segregated atmospheric aerosols in boreal forest: seasonal patterns, abundances and size distributions

et al. 2017

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“…These pollen stocks, also listed in Fig. 2, were aerosolized into the chamber with the same FSSST configuration used for fungi, with notable fractionation of some grains as judged by direct phase contrast microscopy using accepted methods (Taylor et al, 2004).…”

Section: Pollenmentioning

confidence: 99%

Chamber catalogues of optical and fluorescent signatures distinguish bioaerosol classes

et al. 2016

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Abstract. Rapid bioaerosol characterization has immediate applications in the military, environmental and public health sectors. Recent technological advances have facilitated single-particle detection of fluorescent aerosol in near real time; this leverages controlled ultraviolet exposures with single or multiple wavelengths, followed by the characterization of associated fluorescence. This type of ultraviolet induced fluorescence has been used to detect airborne microorganisms and their fragments in laboratory studies, and it has been extended to field studies that implicate bioaerosol to compose a substantial fraction of supermicron atmospheric particles. To enhance the information yield that newgeneration fluorescence instruments can provide, we report the compilation of a referential aerobiological catalogue including more than 50 pure cultures of common airborne bacteria, fungi and pollens, recovered at water activity equilibrium in a mesoscale chamber (1 m 3 ). This catalogue juxtaposes intrinsic optical properties and select bandwidths of fluorescence emissions, which manifest to clearly distinguish between major classes of airborne microbes and pollens.

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“…(Kellogg and Griffin, 2006). Large PBA such as pollen, fern spores and large fungal spores belong to the coarse mode of air particle matter, whereas small fungal spores, small fragments of animal and plants, bacteria, viruses are found in intermediate and fine fractions of aerosol particles (Taylor et al, 2004;Zhang and Anastasio, 2003;Franze et al, 2005). The number and variety of PBA at a specific site are highly variable, and are dependent on several factors.…”

Section: Introductionmentioning

confidence: 99%

Microbiology and atmospheric processes: chemical interactions of primary biological aerosols

et al. 2008

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Abstract. This paper discusses the influence of primary biological aerosols (PBA) on atmospheric chemistry and vice versa through microbiological and chemical properties and processes. Several studies have shown that PBA represent a significant fraction of air particulate matter and hence affect the microstructure and water uptake of aerosol particles. Moreover, airborne micro-organisms, namely fungal spores and bacteria, can transform chemical constituents of the atmosphere by metabolic activity. Recent studies have emphasized the viability of bacteria and metabolic degradation of organic substances in cloud water. On the other hand, the viability and metabolic activity of airborne micro-organisms depend strongly on physical and chemical atmospheric parameters such as temperature, pressure, radiation, pH value and nutrient concentrations. In spite of recent advances, however, our knowledge of the microbiological and chemical interactions of PBA in the atmosphere is rather limited. Further targeted investigations combining laboratory experiments, field measurements, and modelling studies will be required to characterize the chemical feedbacks, microbiological activities at the air/snow/water interface supplied to the atmosphere.

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Birch pollen rupture and the release of aerosols of respirable allergens

Cited by 192 publications

References 33 publications

Characterization of free amino acids, bacteria and fungi in size-segregated atmospheric aerosols in boreal forest: seasonal patterns, abundances and size distributions

Characterization of free amino acids, bacteria and fungi in size-segregated atmospheric aerosols in boreal forest: seasonal patterns, abundances and size distributions

Chamber catalogues of optical and fluorescent signatures distinguish bioaerosol classes

Microbiology and atmospheric processes: chemical interactions of primary biological aerosols

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