Occupational Exposure to Hi-Sil and Silene

Plunkett, Evan; DeWitt, B. J.

doi:10.1080/00039896.1962.10663313

Cited by 15 publications

(4 citation statements)

References 1 publication

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“…In this study, confounding by other agents, including cristobalite and cigarette smoking, was Legge, 1932Vigliani, 1948Motley, 1956Cooper, 1958Cooper, 1977Cooper, 1984Motley, 1960Volk, 1960Plunkett, 1962 Cross-sectional survey Cross-sectional survey Normal to mild reduction in pulmonary function Pneumoconiosis in 46% of workers exposed to calcined diatomite No pneumoconiosis in workers exposed to crude diatomite only All but 2 of 1 3 long-term (20+ yr) workers with pneumoconiosis were exposed to calcined diatomite Pneumoconiosis incidence decreased with reduced dust level, with nearly all cases employed before 1953 All 11 workers with pneumoconiosis were employed for more than 25 yr Higher concentration of amorphous silica particles in bronchoalveolar lavage fluid of blast-furnace workers than white-collar workers o not considered. Indeed, smoking generally appeared to be a stronger determinant of pulmonary symptoms and functions than exposure to amorphous silicas (Wilson et al, 1979;Choudat et al, 1990).…”

Section: Health Effects Of Amorphous Silica Exposure On Humansmentioning

confidence: 95%

“…Other forms of amorphous silica, including precipitated and pyrogenic silicas, generally have not been linked to silicosis in humans (Volk, 1960;Plunkett & DeWitt, 1962;Wilson et al, 1979;Choudat et al, 1990), although x-ray abnormalities and reduced pulmonary function have been reported among workers exposed to pyrogenic silicas in a metallurgical plant (Vitums et al, 1977). In this study, confounding by other agents, including cristobalite and cigarette smoking, was Legge, 1932Vigliani, 1948Motley, 1956Cooper, 1958Cooper, 1977Cooper, 1984Motley, 1960Volk, 1960Plunkett, 1962 Cross-sectional survey Cross-sectional survey Normal to mild reduction in pulmonary function Pneumoconiosis in 46% of workers exposed to calcined diatomite No pneumoconiosis in workers exposed to crude diatomite only All but 2 of 1 3 long-term (20+ yr) workers with pneumoconiosis were exposed to calcined diatomite Pneumoconiosis incidence decreased with reduced dust level, with nearly all cases employed before 1953 All 11 workers with pneumoconiosis were employed for more than 25 yr Higher concentration of amorphous silica particles in bronchoalveolar lavage fluid of blast-furnace workers than white-collar workers o not considered.…”

Section: Health Effects Of Amorphous Silica Exposure On Humansmentioning

confidence: 99%

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Amorphous silica: A review of health effects from inhalation exposure with particular reference to cancer

McLaughlin

Chow

Levy

1997

Journal of Toxicology and Environmental Health

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Silicas and silicates are some of the most abundant compounds found naturally in the earth's crust. Excessive exposure to crystalline silicas can cause serious lung disease such as silicosis and has been associated with lung cancer in some studies, but the potential health effects of amorphous silicas (silicon dioxide without crystalline structure) have not been well studied. Results from animal studies of amorphous silicas, unlike those seen with crystalline silicas, have suggested limited and largely reversible cytotoxic and possibly fibrogenic effects associated with some forms, but data on cancer outcomes are scanty and for the most part negative. Epidemiologic investigations to date for any potential cancer risk are not informative because the effects of crystalline and amorphous silicas have not been separated. Any future epidemiologic study should attempt to clarify the health effects of amorphous silicas from those of crystalline silicas, particularly with regard to any potential for carcinogenicity.

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Section: Health Effects Of Amorphous Silica Exposure On Humansmentioning

confidence: 95%

Section: Health Effects Of Amorphous Silica Exposure On Humansmentioning

confidence: 99%

Amorphous silica: A review of health effects from inhalation exposure with particular reference to cancer

McLaughlin

Chow

Levy

1997

Journal of Toxicology and Environmental Health

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“…Von ilmen konnte man annehmen, dalI sie in wällriger Suspension ähnliche Reaktionen auslösen wie die Hydrosilikate der Akrothermen. Das Praparat ist, wie eingehende Untersuchungen zeigten, selbst in hoher Konzentration weder silikosogen noch karzinogen (Gartner 1952, Jötten 1953, Schepers et al 1957, Volk 1960, Plunkett et a!. 1962, Hofmann 1974 Für die Hydrophilie des Aerosils sind sogenannte Silanoigruppen Si -0-H verantwortlich, die zu Interaktionen des Wasserstoffes innerhaib der Aerosilpartikelchen, aber auch mit denen des umgebenden Wassers neigen (s. Abb.…”

Section: Methodikunclassified

Experimentelle Untersuchungen über das Verhalten der Hauttemperatur in unterschiedlich temperierten Teilbädern und zur Frage nach dem Wirkungsprinzip akratischer Wässer

Hille¹,

Becker²,

Kienle³

1995

Phys Rehab Kur Med

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“…In surveys by Plunkett and DeWitt (119), and Volk (120) of commercial amorphous silica workers, no evidence of pneumoconiosis was found with 8 to 12 years of exposure.…”

Section: Production Of Solar-grade Siliconmentioning

confidence: 95%

Industrial hygiene characterization of photovoltaic solar cell industry.

1980

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The search for viable alternative energy sources has intensified interest in photovoltaic technologies. Although this industry is currently very small, rapid growth is anticipated during the remainder of this century. This expected growth in the production of photovoltaic devices and related base materials and its attendant increased work force warrant an evaluation of the potential occupational health and safety hazards of the industry. The information presented in this report is based on a comprehensive literature review and walk-through surveys of 14 production or" research and development facilities. The investigation covers the technology from base material preparation through final module assembly~D escriptions are given of major technologies under development and the associated chemical and physical agents to which workers could be exposed. In-depth sampling surveys were conducted. Industrial hygiene concerns connected with each major technology are presented. Available health effects literature is listed for the chemicals used in all reviewed technologies. The investigation revealed that of the facilities surveyed, the industry presently appears to be generally well controlled, especially as to the single crystal silicon technology which is the most highly developed technology in the industry. Comprehensive industrial hygiene sampling was performed in a few facilities regarded as representing the norm. With the exception of elevated exposures to silver during grid metalization in one facility and to arsenic during gallium arsenide wafer production in another facility, all other exposures monitored were well within the standards. It must be realized, however, that toxic compounds are used and continued surveillance within the industry during its growth should be maintained.

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Occupational Exposure to Hi-Sil and Silene

Cited by 15 publications

References 1 publication

Amorphous silica: A review of health effects from inhalation exposure with particular reference to cancer

Amorphous silica: A review of health effects from inhalation exposure with particular reference to cancer

Experimentelle Untersuchungen über das Verhalten der Hauttemperatur in unterschiedlich temperierten Teilbädern und zur Frage nach dem Wirkungsprinzip akratischer Wässer

Industrial hygiene characterization of photovoltaic solar cell industry.

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