Sampling Efficiency and Performance of Selected Thoracic Aerosol Samplers

Görner, Peter; Simon, Xavier; Boivin, Alexis; Bau, Sébastien

doi:10.1093/annweh/wxx057

Cited by 3 publications

(3 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Thoracic dust, endotoxins, cultivatable bacteria and fungi were collected on 37-mm glass fibre filters (pore size: 0.8 µm; Millipore, Billerica, MA, USA) using a thoracic parallel particle impactor (PPI)-T (Tecora, Paris, France) connected to a sampling pump (Aircheck 2000, Tecora, Paris, France) operating at 2 L/min (Görner et al, 2017). Airflow was checked before and after sampling.…”

Section: Exposure Monitoringmentioning

confidence: 99%

Factors determining the exposure of dairy farmers to thoracic organic dust

Pfister

Madec

Cann

et al. 2018

Environmental Research

View full text Add to dashboard Cite

Bronchial respiratory diseases are more common in dairy farmers than in the general population, perhaps because the repeated inhalation of organic dust contributes to the development of these disorders. However, the factors determining the exposure of farmers to particles that can enter the lower bronchial tract and interact with it, i.e. the thoracic fraction of the inhalable dust, remain to be identified. We therefore measured the exposure of dairy farmers to thoracic organic dust and identified the farm features and tasks that increased exposure. We measured thoracic particles (n = 110) and farm characteristics and occupational tasks in 29 Brittany dairy farms. The mean (GM) (geometric standard deviation, GSD) concentration of thoracic dust in air inhaled by farmers was 0.24 mg/m (2.8) and the concentrations of endotoxins, Gram-positive bacteria and fungi in the thoracic fraction were 128 EU/m (4.0), 960 CFU/m (6.3) and 690 CFU/m (5.4), respectively. Model-based estimates of the association between exposure, farm features and tasks indicated that manual grain and feed handling and mechanical bedding spreading significantly increased exposure to thoracic dust, endotoxins, bacteria and fungi. Exposure to bacteria and fungi was reduced by cowsheds divided into cubicles, whereas using automatic muck scrappers in alleyway and automatic milking tended to increase exposure to bacteria and endotoxins. Finally, exposure to endotoxin and fungi were reduced by warmer farm buildings and well-ventilated buildings having walls with large openings. In conclusions, major occupational tasks and specific farm features determine the exposure of Breton dairy farmers to thoracic organic dust.

show abstract

Section: Exposure Monitoringmentioning

confidence: 99%

Factors determining the exposure of dairy farmers to thoracic organic dust

Pfister

Madec

Cann

et al. 2018

Environmental Research

View full text Add to dashboard Cite

show abstract

“…The recommended flow rate of the GK4.162 for thoracic size-selective sampling has been reported by three different laboratories. [19,28] …”

Section: Discussionmentioning

confidence: 99%

Laboratory comparison of new high flow rate respirable size-selective sampler

Lee

Thorpe

Cauda

et al. 2018

Journal of Occupational and Environmental Hygiene

View full text Add to dashboard Cite

A newly developed high flow rate respirable size-selective cyclone sampler (GK4.162—also known as the Respirable Air Sampling Cyclone Aluminum Large (RASCAL)) was calibrated to determine its optimum operating flow rate. The Health and Safety Laboratory in the United Kingdom and two laboratories from the National Institute for Occupational Safety and Health in the United States conducted experiments using two different methods: (1) polydisperse aerosol and time-of-flight direct reading instrument (Aerodynamic Particle Sizer (APS)) and (2) monodisperse aerosol and APS. The measured performance data for the cyclone was assessed against the international respirable convention using the bias map approach. Although the GK4.162 cyclone was tested using different aerosols and detection methods, the results from the three laboratories were generally similar. The recommended flow rate based on the agreement of results from the laboratories was 9.0L/min.

show abstract

“…This experimental approach enabled us to avoid a filter with a mass that deviates from the target value of 2.5 mg. After its generation, the aerosol is routed to a buffer volume, thus making it less dependent on a variation in mass during generation. The aerosol then reaches the PM10 or PM2.5 separator with a cut-off diameter d50 at 10 μm for 3.0 L min −1 and 2.5 µm for 4.0 L min −1 , respectively, and described elsewhere [29]. During loading on a filter, clip 2 is installed, and clip 1 is removed.…”

Section: Experimental Set-up For Loading Filtersmentioning

confidence: 99%

Method for Preparation of a Candidate Reference Material of PM10 and PM2.5 Airborne Particulate Filters Loaded with Incineration Ash-Inter Comparison Results for Metal Concentrations

et al. 2021

View full text Add to dashboard Cite

Air pollution is an important issue that can have significant implications for human health. Consequently, air quality control is matter of great interest, and the ΕU has established strict legislation with respect to public health protection. A work package of the EMPIR project AEROMET focused on the investigation of traceable validated methods for chemical composition of airborne particulate matter (PM), including heavy metals. Incineration ash typically contains quantities of heavy and toxic metals in excess of the limits imposed for airborne PM, so it provides a candidate source for a Standard Reference Material (SRM). In this work, a method for loading incinerator ash (PM10 and PM2.5 fractions) on quartz filters with a good reproducibility and homogeneity was developed. An intercomparison exercise involving three separate laboratories was conducted for the elemental analysis of the prepared candidate reference material. The filters were treated by acid digestion and analyzed by Inductively Coupled Plasma–Mass Spectrometry (ICP-MS) according to the European standard EN 14902:2005. Eleven elements, including the regulated metals (As, Cd, Ni and Pb), were determined using different ICP-MS instruments and standardization methods. Data evaluation showed a good agreement between the results, with deviations below 10–15%. The development of a Standard Reference Material seems auspicious.

show abstract

Sampling Efficiency and Performance of Selected Thoracic Aerosol Samplers

Cited by 3 publications

References 24 publications

Factors determining the exposure of dairy farmers to thoracic organic dust

Factors determining the exposure of dairy farmers to thoracic organic dust

Laboratory comparison of new high flow rate respirable size-selective sampler

Method for Preparation of a Candidate Reference Material of PM10 and PM2.5 Airborne Particulate Filters Loaded with Incineration Ash-Inter Comparison Results for Metal Concentrations

Contact Info

Product

Resources

About