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Variations in methyl bromide concentration with distance and time during quarantine fumigation

Authors
  • Park, Min-Goo1, 2
  • Hong, Young-Seoub3, 4
  • Park, Chung Gyoo2
  • Gu, Dong-Chul5, 6
  • Mo, Hyoung-ho1
  • 1 Animal and Plant Quarantine Agency (APQA), Gimcheon, 39660, Republic of Korea , Gimcheon (South Korea)
  • 2 Gyeongsang National University, Jinju, 52828, Republic of Korea , Jinju (South Korea)
  • 3 Dong-A University, Busan, Republic of Korea , Busan (South Korea)
  • 4 Heavy Metal Exposure Environmental Health Center, Dong-A University, Busan, Republic of Korea , Busan (South Korea)
  • 5 Pusan National University, Busan, Republic of Korea , Busan (South Korea)
  • 6 Gugil Environment and Industrial Hygiene. Co. Ltd, Busan, Republic of Korea , Busan (South Korea)
Type
Published Article
Journal
Environmental Monitoring and Assessment
Publisher
Springer-Verlag
Publication Date
Jun 08, 2021
Volume
193
Issue
7
Identifiers
DOI: 10.1007/s10661-021-09154-3
Source
Springer Nature
Keywords
License
Yellow

Abstract

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 < 0.05 for all models). The results of this study could aid in establishing appropriate safety guidelines, and hence, in preventing risks related to MB exposure.

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