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Isomeric Effects on Volatilization of 1,3-Dichloropropene Fumigant in Soil

  • Kim, Jung-Ho (Department of safety & Environmental Prevention, Daegu Haany University) ;
  • Mallavarapu, Megharaj (Centre for Environmental Risk Assessment and Remediation, University of South Australia)
  • Published : 2009.12.31

Abstract

The fumigant 1,3-dichloropropene (1,3-D) was recently proposed as a direct replacement for methyl bromide ($CH_3Br$) in soil fumigation. This study was conducted to better understand behavior phase partitioning, diffusion and volatilization of 1,3-D as affected by isomer. The Henry's law constant(KH) of cis-1,3-D and trans-1,3-D was 0.058 and 0.037 at $20^{\circ}C$, respectively. $K_H$ of cis form of 1,3-D was higher than that of trans form of 1,3-D. To compare with volatilization of 1,3-D isomer, soil column [70 cm (length)${\times}$12 cm (i.d.)] included a shank injection at 30 cm with 300 kg $ha^{-1}$. Maximum cis-1,3-D and trans-1,3-D concentration reached 57 mg $L^{-1}$ and 39 mg $L^{-1}$ at 30 cm depth at 1h after application. Cumulatively, after 10 days, 51.8% and 43.57% of applied cis-1,3-D and trans-1,3-D was emitted via volatilization, respectively. The total losses of cis-1,3-D were significantly greater than that of trans-1,3-D. Finally, cis-1,3-D and trans-1,3-D, such as isomer are dominant of 1,3-D fates in soil.

Keywords

Fumigant;Ozone-depleting chemicals;Isomer;1,3-dichloropropene;Phase partitioning;Diffusion;Volatilization

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Cited by

  1. Emissions of 1,3-Dichloropropene and Chloropicrin after Soil Fumigation under Field Conditions vol.63, pp.22, 2015, https://doi.org/10.1021/acs.jafc.5b01309