An Investigation of the Performance of the 10-mm Nylon Cyclone

Carsey, Thomas P.; Shulman, Stanley A.; Lorberau, Charles D.

doi:10.1080/08828032.1987.10389248

Cited by 5 publications

(1 citation statement)

References 10 publications

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“…(20) Sample pairs were collected each day over a period of three days at the same locations in the transfer and breaking departments (eight pairs) where liquid aerosols were likely and in the white packing departments (three pairs) where only dry aerosol existed. To perform respirable sampling, 10-mm nylon Dorr-Oliver type cyclones (SKC, Eighty Four, PA) with a 50 percent aerodynamic cut-off collection ef ciency of 3.5 ¹m were used at a ow rate of 1.7 Lpm to collect egg aerosols and these results were compared to the total aerosol collected by close face cassette samplers at the same ow rate.…”

Section: Stationary Respirable and Total Aerosol Samplingmentioning

confidence: 99%

Exposure to Protein Aeroallergens in Egg Processing Facilities

Boeniger

Lummus

Biagini

et al. 2001

Applied Occupational and Environmental Hygiene

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Proteinaceous materials in the air can be highly allergenic and result in a range of immunologically mediated respiratory effects, including asthma. We report on the largest evaluation of exposure to date of airborne egg protein concentrations in an egg breaking and processing plant that had cases of occupational asthma. Personal air samples for egg protein were analyzed in duplicate on each PTFE lter using two analytical methods: (1) a commercial assay for non-speci c total protein, and (2) indirect competitive inhibition assay using an ELISA method to quantify speci c egg protein components. The highest concentrations were found in the egg washing room (mean exposure 644 ¹g/m 3 ) and breaking room (255 ¹g/m 3 ), which were also the areas where the risk of being sensitized was the greatest. There was excellent quantitative agreement between the airborne concentrations of total protein and sum of the speci c protein antigens (ovalbumin, ovomucoid, and lysozyme). The correlation coef cient of the log-transformed data from the two methods was 0.88 (p < 0.0001). Size-selective sampling also indicated that most of the aerosol was capable of reaching the small airways. The methods described can be utilized to evaluate employee exposure to egg proteins. Exposure documentation, coupled with recommended exposure reduction strategies, could facilitate prevention of future employee sensitization and allergic respiratory responses by identifying high-exposure jobs and evaluating control measures.

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Section: Stationary Respirable and Total Aerosol Samplingmentioning

confidence: 99%

Exposure to Protein Aeroallergens in Egg Processing Facilities

Boeniger

Lummus

Biagini

et al. 2001

Applied Occupational and Environmental Hygiene

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Carbon Black

McCunney¹,

Muranko²,

Valberg³

2001

Patty's Toxicology

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Carbon black is a powdered form of elemental carbon in the form of near‐spherical colloidal particles and coalesced particle aggregates of colloidal size, obtained by partial combustion or thermal decomposition of hydrocarbons. It is distinguishable from other commercial carbons, such as charcoal, by its fine particulate nature and the shape, structure, and degree of fusion of the particles observed with the electron microscope. The fundamental unit of a carbon black particle is the aggregate. Although carbon black is often equated with soot, it differs markedly from the unwanted, uncontrolled by‐products of combustion found in chimneys and the ambient air. The contrast between carbon blacks, soots, and diesel particulate is discussed in more detail in the following. Carbon black is the earliest known synthetic pigment, having been produced by the Chinese more than 1500 years ago. They made the ink pigment lampblack by burning purified animal or vegetable oils in small lamps with the flames impinging on cool porcelain surfaces on which the carbon black collected. Carbon black has been commercially produced in the United States for more than 100 years. Although it is still used as a pigment in printing inks, paints, and lacquers, its major use over the past 50 years has been as a reinforcing agent in rubber, particularly in tires. It is also used in plastics, to which it imparts weathering resistance, antistatic, and electrically conductive properties.

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Performance of a respirable multi-inlet cyclone sampler

Gautam¹,

Sreenath²

1997

Journal of Aerosol Science

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An Investigation of the Performance of the 10-mm Nylon Cyclone

Cited by 5 publications

References 10 publications

Exposure to Protein Aeroallergens in Egg Processing Facilities

Exposure to Protein Aeroallergens in Egg Processing Facilities

Carbon Black

Performance of a respirable multi-inlet cyclone sampler

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