Related Experiment Video
Updated: Jul 4, 2026

Establishing a Silicosis Rat Model via Exposure of Whole-Body to Respirable Silica
Published on: October 28, 2022
Non-occupational exposure to silica dust in vicinity of slate pencil industry, India
1National Institute of Occupational Health, Meghani Nagar, Ahmedabad, 380016, India. ljbhagia@rediffmail.com
Abstract:
Non-occupational exposure to crystalline silica (quartz) in vicinity of slate pencil industry is reported. Ambient silica monitoring was carried out at two locations in the vicinity of slate pencil industry and one control site 5 kilometers away from slate pencil industry using PM-10 high volume samplers. Quartz content was analyzed using Fourier Transform Infrared Spectrophotometer (FTIR) from vertically elutriated dust samples collected simultaneously at all locations. It was found that average quartz concentrations in the vicinity of slate pencil industry and control site were 41.07-57.22 and 3.51 microg/m(3), respectively. Results were compared with derived ambient air quality standard for silica based on findings reported by Environmental Protection Agency (EPA).
Related Concept Videos
Deleterious Substances in Aggregate
Another type of impurity is clay and fine material that...
Portland Cement
Quarrying of Stone
One common method involves using a diamond belt saw to cut large blocks from the quarry face. These blocks can be about 50 feet long and 12 feet high. After the initial vertical cut, drilling is performed at the base of the block.
Pozzolans
Fly ash is a...
Alkali Aggregate Reaction in Concrete
Types of Cement II
