Pesticide Residue Behavior and Risk Assessment in Celery after Se Nanoparticles Application

Lu Kang; Hejiang Liu; Duoyong Zhao; Canping Pan; Cheng Wang

doi:10.3390/foods10091987

Pesticide Residue Behavior and Risk Assessment in Celery after Se Nanoparticles Application

Foods. 2021 Aug 25;10(9):1987. doi: 10.3390/foods10091987.

Authors

Lu Kang^{1

2}, Hejiang Liu², Duoyong Zhao², Canping Pan¹, Cheng Wang²

Affiliations

¹ Innovation Center of Pesticide Research, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, China.
² Key Laboratory of Agro-Products Quality and Safety of Xinjiang, Institute of Agricultural Quality Standards and Testing Technology, Xinjiang Academy of Agricultural Sciences, Urumqi 830091, China.

Abstract

This study investigates pesticide levels in celery, and compares their degradation, dissipation, distribution, and dietary risk after spraying with selenium (Se) nanoparticles. Abamectin, imidacloprid, acetamiprid, thiamethoxam, and lambda-cyhalothrin were sprayed at 1.6, 6.8, 2.0, 1.0, and 0.7 g a.i. ha^-1 followed by a 2 g·ha^-1 Se nanoparticle application during the growing period. Thiamethoxam, abamectin, imidacloprid, lambda-cyhalothrin, and acetamiprid in celery degraded following a first order kinetic model after 2 g·ha^-1 Se nanoparticles application. With the exception of acetamiprid, the half-lives of thiamethoxam, abamectin, imidacloprid, and lambda-cyhalothrin were reduced from 2.4, 0.5, 1.2, 4.2 days without Se nanoparticles application to 1.4, 0.2, 0.9, 3.7 days with the addition of Se nanoparticles (2 g·ha^-1), respectively. The chronic dietary exposure risk probability (RQc) and the acute dietary exposure risk probability (RQa) of celery after Se nanoparticles application were within acceptable limits for consumption except for abamectin.

Keywords: celery; dissipation; pesticides; residue behavior; risk assessment.