Recently, the Agro-product Quality and Safety Testing Technology Innovation Team from the Institute of Quality Standards and Testing Technology for Agro-Products of CAAS has revealed the dissipation behavior and potential risk of tristyrylphenol ethoxylate homologs (TSPEOs) in peanuts by spraying and root irrigation. Relevant results were published in the Journal of Hazardous Materials (IF: 13.6).

The study elucidated the residual dissipation behavior of different homologs TSPEOn under two application methods: spraying and root irrigation. The half-lives of TSPEOs residues in the root irrigation were significantly higher than that in the spraying. The half-lives of TSPEOn (n=1-29) in peanut plants and soil were 3.67-7.00 days and 5.41-8.15 days, respectively. The longer-chain TSPEOn (n=17-29) was more easily degraded in peanut plants. The residual concentrations of TSPEOs in peanut shells and soil through root irrigation were 1.0-4.8 times higher than those through spraying. Through dietary intake risk assessment and risk quotient methods, it was found that the health risks and ecological risks of TSPEOs residues in peanuts and soil were relatively low, but root irrigation might pose a higher potential risk than spraying. This study provides technical support for the rational use of pesticide adjuvant TSPEOs during peanut cultivation.

This work was supported by the Science and Technology Innovation Program of the Chinese Academy of Agricutural Sciences (CAAS-ASTIP-IQSTAP-02).

Figure 1 Comparison of dissipation and potential risks for TSPEOs in peanuts under different application methods

Link: https://doi.org/10.1016/j.jhazmat.2024.134486

By Wang Hongping

(wanghongping@caas.cn)