Variations in methyl bromide concentration with distance and time during quarantine fumigation
| Autor: | Chung Gyoo Park, Min-Goo Park, Young-Seoub Hong, Dong-Chul Gu, Hyoung-ho Mo |
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| Rok vydání: | 2021 |
| Předmět: |
Fumigation workers
Fumigation Environmental monitoring General Medicine Management Monitoring Policy and Law 030210 environmental & occupational health Pollution Article Exposure modeling Declining trends Safety guidelines 03 medical and health sciences chemistry.chemical_compound 0302 clinical medicine chemistry Bromide Environmental chemistry Exposure assessment Environmental science 030212 general & internal medicine Gas chromatography General Environmental Science |
| Zdroj: | Environmental Monitoring and Assessment |
| ISSN: | 1573-2959 0167-6369 |
| DOI: | 10.1007/s10661-021-09154-3 |
| Popis: | Methyl bromide (MB) is a highly toxic and ozone-depleting substance and should be replaced. Worker exposure to high MB concentrations during fumigation has been previously reported. However, variations in MB concentration as a function of distance from fumigated objects or of time after degassing have not been reported so far. In this study, air samples were collected at various distances from fumigated objects (oranges, wood in containers, and wood in tarpaulin) during injection and degassing and analyzed via gas chromatography according to the Occupational Safety and Health Agency method. In addition, MB concentrations were directly measured over time using a gas detector during degassing. Non-linear regression analysis of the logarithmically transformed data indicated a clear decrease in MB concentration with distance as well as time. Non-linear regression models were constructed to describe the decrease in MB concentration with distance from the objects and with time during degassing (P |
| Databáze: | OpenAIRE |
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