Document Type : Original Article
Authors
1 Ph.D. Student, Department of Physical Education, Faculty of Human Sciences, Shahrood Branch, Shahrood, Iran
2 دانشگاه آزاد اسلامی شاهرود . شاهرود . ایران
3 3- Assistant Professor, Department of Environment, Faculty of Engineering, Shahrood Branch, Shahrood, Iran
Abstract
The purpose of the research is to measure the toxic elements and compounds in the flooring used in children's playgrounds and sports spaces. This research was applied and laboratory. Heavy elements, free monomer and hydrocarbons and phenolic compounds were measured. Vista Pro model ICP-OES and 1240 mini visible and ultraviolet spectrophotometer were used to measure the pollutants. The experiments were repeated three times and the weighted mean-time index (OEL-TWA) was used to determine the allowable exposure to chemical agents. Magnesium oxide with 6420 ppm had the highest and phosphorus pentaoxide with 60 ppm had the lowest amount of compounds. The highest amount of element belonged to the heavy metal zinc equal to 11080 ppm and the lowest amount belonged to zirconium with 1.50 ppm. Three contaminants of arsenic, uranium and chromium with "proven human carcinogenicity" were identified in the tatami floor structure. Silica has also been identified as a "contaminant suspected of carcinogenicity in humans." Three cases (lead, vanadium, and molybdenum) were identified as "confirmed carcinogenicity for animals with unknown association with humans" and 13 cases were classified as "unclassifiable as a human carcinogen." Some elements and compounds in the structure of sports flooring have a higher suffering than the standards and permissible exposure limits, which can affect the health of users and on the other hand, can be harmful to the environment.
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