Preliminary Assessment of a Device for Passive Sampling of Airborne Participate

Brown, Ronald; Wake, D.; Thorpe, A.; Hemingway, M.A.; Roff, Martin

doi:10.1093/annhyg/38.3.303

Cited by 24 publications

(9 citation statements)

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“…Examples are respirators, vacuum cleaners, desk-top cleaners against tobacco smoke, and larger-scale air cleaning devices [137] with some newer uses in such applications as recirculating systems. A related recent development is a passive sampler consisting of a film electret which attracts dust particles for later analysis [138,139]. In most of the filters, polypropylene is used for the electret films.…”

Section: Air and Gas Filtersmentioning

confidence: 99%

Space-charge electrets

Kressmann

Sessler

Gunther

1996

IEEE Trans. Dielect. Electr. Insul.

119

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A literature review on space-charge electrets, covering the time period 1987 to 1996, is presented. The review starts out with a discussion of new inorganic and organic electret materials which also includes silicon based single and double layers. This is followed by a review of recent work on methods for measuring charge distributions. New results obtained with these methods on a number of differently charged materials are surveyed, together with data for charge transport and charge decay. Of particular significance is the superb charge storage capability of silicon dioxide/silicon nitride double layers which was discovered only very recently. The review closes with a survey of new, or improved electret applications.

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Section: Air and Gas Filtersmentioning

confidence: 99%

Space-charge electrets

Kressmann

Sessler

Gunther

1996

IEEE Trans. Dielect. Electr. Insul.

119

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“…Passive sampling is an inexpensive means to measure particulate matter in many locations and thus offers a way to bolster exposure assessment (Brown, Wake, Thorpe, Hemingway, & Roff, 1994;Noll, Fang, & Watkins, 1988;Vinzents, 1996;Wagner & Leith, 2001a;Yamamoto et al, 2006). Wagner and Leith (2001a) presented a method where particle number concentration by size is estimated from the surface loading of particles collected onto a substrate over time and knowledge of the flux, or rate of transfer, of these particles to the sampler.…”

Section: Introductionmentioning

confidence: 99%

Passive measurement of coarse particulate matter,

Ott

Cyrs

Peters

2008

Journal of Aerosol Science

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“…The rate of collection of particles is relatively independent of their size, charge distribution, or velocity, but this is highly dependent on the electrical mobility and this depends on the chemical composition of the aerosol. 41 The sampler is small, lightweight (about 15 g), and not intrusive. It may be worn for extended periods and requires almost no operator maintenance over that period.…”

Section: Passive Aerosol Samplersmentioning

confidence: 99%

Measurement of human exposure to biologically relevant fractions of inhaled aerosols.

Cherrie

Aitken

1999

Occup Environ Med

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Aerosol sampling has evolved with changes in technology and our understanding of the importance of assessing the biologically relevant fractions of the total aerosol. During the past decade there has been international agreement on the definitions for the inhalable, thoracic, and respirable fractions and instruments have been developed to collect samples according to these conventions. These measurement techniques are now well established in the workplace and are increasingly being applied to assessments of nonoccupational exposure, as the practical diYculties in obtaining samples over 24 hours have been solved. It is argued that multiple aerosol size fractions should be measured for hazardous substancessuch as inorganic lead-in which inhaled material may either be absorbed in the alveoli (respirable) or cleared from the ciliated airways in the lung to the gut and then absorbed (thoracic and extrathoracic). Such measurements should improve the evaluation of the risk for inhaled lead, particularly for non-occupational exposure of children. Also, passive aerosol sampling techniques may enable measurements of non-occupational exposure to be made over several weeks and this would also help improve the reliability of the risk evaluation for aerosol toxicants with a long biological half life. However, further development of these techniques is required if they are to be practicable and biologically relevant. (Occup Environ Med 1999;56:747-752)

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Preliminary Assessment of a Device for Passive Sampling of Airborne Participate

Cited by 24 publications

References 0 publications

Space-charge electrets

Space-charge electrets

Passive measurement of coarse particulate matter,

Measurement of human exposure to biologically relevant fractions of inhaled aerosols.

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