Exposure to respirable dust among workers fabricating aluminium trihydroxide-containing synthetic countertops

The aim of this study is to characterize personal exposure of workers to respirable particulate matter (PM) generated in cutting and other fabrication activities when fabricating acryl polymer/aluminium trihydroxide synthetic countertops. We collected 29 personal full-day samples of respirable PM from three workers in a small private workshop. We tested differences between- and within-worker variances of mass concentrations using the Kruskall-Wallis test. We used segmented regression to test the means and medians 15-min interval concentrations changes over time and to identify a breakpoint. Respirable PM concentrations ranged nearly 100-fold, from 0.280 to 25.4 mg/m3 with a median of 2.0 mg/m3 (1-min concentrations from 13,920 data points). There were no statistical difference in daily median or geometric mean concentrations among workers, whereas the concentrations were significantly higher on days with three versus two workers present. The 15-min median concentrations (n = 974 measures) increased until 2.35 h (beta 0.177; p < 0.05), representing a 0.70 mg increase in exposure per hour. This was followed by a plateau in concentrations. The high levels of respirable PM we observed among workers fabricating aluminium trihydroxide-containing synthetic countertops highlight an unmet early prevention need. © 2021, The Author(s).

Авторы
Vinnikov D. 1, 2 , Blanc P.D.3 , Raushanova A.1 , Beisbekova A.1, 4 , Abraham J.L.5 , Zlobina Y.1
Журнал
Издательство
Nature Publishing Group
Номер выпуска
1
Язык
Английский
Статус
Опубликовано
Номер
21219
Том
11
Год
2021
Организации
  • 1 Al-Farabi Kazakh National University, 71 al-Farabi avenue, Almaty, 050040, Kazakhstan
  • 2 Peoples’ Friendship, University of Russia, RUDN University), Moscow, Russian Federation
  • 3 University of California San Francisco, San Francisco, CA, United States
  • 4 Asfendiyarov Kazakh National Medical University, Almaty, Kazakhstan
  • 5 SUNY Upstate School of Medicine, Syracuse, NY, United States
Дата создания
16.12.2021
Дата изменения
16.12.2021
Постоянная ссылка
https://repository.rudn.ru/ru/records/article/record/76459/
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