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Journal of the Society of Motion Picture Engineers ( Volume: 35, Issue: 7, July 1940)
[ACTIVE]

Gases from Carbon ARCS and their Effects

Metadata

Publisher
SMPTE
Doc Type
Journal Article
Article Type
research-article
Abstract
This paper is a review of work done in the laboratories of National Carbon Company, Inc., the College of Medicine of the University of Nebraska, the School of Public Health of Harvard University, and the Department of Health of the City of Detroit on the products of combustion from carbon arcs used in the motion picture industry. Analyses of the gases coming from various lamps show that, even in the stacks, the only gas occurring in toxic concentration is nitrogen dioxide. The biological effects of undiluted stack gas from simplified high-intensity arcs upon experimental animals were only those due to the nitrogen dioxide. The arc-ash fume when administered by intratracheal and subcutaneous routes in rabbits was found to be relatively inert. Determination of nitrogen dioxide concentrations in poorly ventilated projection rooms failed to show any concentration more than about one-fifth that generally considered as allowable for exposure of several hours' duration, and therefore there is little or no hazard in these projection rooms. Studies of ventilation under controlled conditions show that even with very low rates of both lamp house and room ventilation there is no danger of gases or fumes reaching concentrations which are toxic and that if sufficient ventilation is provided to produce comfortable working conditions there can not be any appreciable concentrations of nitrogen dioxide or arc-ash fumes in the booth.
Publication Date
1940-07-01
DOI
10.5594/J10067
Link
https://doi.org/10.5594/J10067
Author(s)
A. C. Downes
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A. C. Downes; Gases from Carbon ARCS and their Effects, Journal of the Society of Motion Picture Engineers ( Volume: 35, Issue: 7, July 1940); SMPTE, 1940. Available at https://doi.org/10.5594/J10067
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A. C. Downes; Gases from Carbon ARCS and their Effects, Journal of the Society of Motion Picture Engineers ( Volume: 35, Issue: 7, July 1940); SMPTE, 1940. Available at https://doi.org/10.5594/J10067

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A. C. Downes; Gases from Carbon ARCS and their Effects, Journal of the Society of Motion Picture Engineers ( Volume: 35, Issue: 7, July 1940); SMPTE, 1940. Available at https://doi.org/10.5594/J10067
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<span class="citation">A. C. Downes; <cite>Gases from Carbon ARCS and their Effects</cite>, Journal of the Society of Motion Picture Engineers ( Volume: 35, Issue: 7, July 1940); SMPTE, 1940. Available at <a href="https://doi.org/10.5594/J10067" target="_blank" rel="noopener">https://doi.org/10.5594/J10067</a></span>

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A. C. Downes; Gases from Carbon ARCS and their Effects, Journal of the Society of Motion Picture Engineers ( Volume: 35, Issue: 7, July 1940); SMPTE, 1940
doi: 10.5594/J10067
url: https://doi.org/10.5594/J10067
Snippet:
<li>
A. C. Downes; <cite id="bib-10-5594-j10067">Gases from Carbon ARCS and their Effects</cite>, Journal of the Society of Motion Picture Engineers ( Volume: 35, Issue: 7, July 1940); SMPTE, 1940
<span class="doi">10.5594/J10067</span>
</li>