Preprints
https://doi.org/10.5194/soil-2021-125
https://doi.org/10.5194/soil-2021-125

  24 Nov 2021

24 Nov 2021

Review status: this preprint is currently under review for the journal SOIL.

Migration behavior of benzobicyclon hydrolysate and associated influencing factors in different agricultural soils

Lang Liu1, Lei Rao2, Wenwen Zhou3, Limei Tang2, and Baotong Li1 Lang Liu et al.
  • 1College of Land Resources and Environment, Jiangxi Agricultural University, Nanchang 330045, China
  • 2College of Agricultural Sciences, Jiangxi Agricultural University, Nanchang 330045, China
  • 3College of Food Sciences, Jiangxi Agricultural University, Nanchang 330045, China

Abstract. Benzobicyclon is a triketone pro-herbicide that needs to be hydrolyzed to form an active compound benzobicyclon hydrolysate (BH). This study aimed to investigate the migration behavior of BH in different types of agricultural soil and the associated influencing factors. Soil thin-layer chromatography and column leaching tests were used to study the migration behavior of BH in these soils. Based on the mobility retention factor (Rf = 0.34–0.90), the mobility of BH in thin soil layers was ranked in the order Lixisols > Anthrosols > Ferralsols > Phaeozems. The Rf value of BH was linearly positively correlated with soil sand content and pH, and negatively correlated with other physical and chemical properties of soil. BH was difficult to leach in Phaeozems, less difficult to leach in Ferralsols, and easy to leach in Anthrosols and Lixisols. Increasing the BH dosage and rainfall amount or adding humic acid and anionic (dodecyl benzene sulfonic acid) or nonionic (Tween-80) surfactant blocked BH migration in soil columns. In contrast, increasing the leaching solution pH and adding cationic surfactant (cetyl trimethyl ammonium bromide) promoted BH migration in soil columns.BH application has a low risk of groundwater pollution in Phaeozems and Ferralsols, but poses a potential threat to groundwater in Anthrosols and Lixisols.

Lang Liu et al.

Status: open (until 11 Jan 2022)

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse

Lang Liu et al.

Lang Liu et al.

Viewed

Total article views: 88 (including HTML, PDF, and XML)
HTML PDF XML Total BibTeX EndNote
75 12 1 88 1 0
  • HTML: 75
  • PDF: 12
  • XML: 1
  • Total: 88
  • BibTeX: 1
  • EndNote: 0
Views and downloads (calculated since 24 Nov 2021)
Cumulative views and downloads (calculated since 24 Nov 2021)

Viewed (geographical distribution)

Total article views: 81 (including HTML, PDF, and XML) Thereof 81 with geography defined and 0 with unknown origin.
Country # Views %
  • 1
1
 
 
 
 
Latest update: 06 Dec 2021
Download
Short summary
In this paper, in order to investigate whether the migration behavior of pesticides in soil can lead to soil and groundwater contamination, thin layer chromatography and soil column leaching were used to study the horizontal and vertical migration behavior of pesticides in soil.