Dissipation and residue of 2,4-d in citrus under field condition

• Published in: Environmental monitoring and assessment 2015-05, Vol.187 (5), p.302-302, Article 302
• Main Authors: Chen, Weijun, Jiao, Bining, Su, Xuesu, Zhao, Qiyang, Sun, Dali
• Format: Article
• Language: English
• Subjects: 2,4-D; 2,4-Dichlorophenoxyacetic Acid - analysis; Atmospheric Protection/Air Quality Control/Air Pollution; China; Chromatography; Chromatography, Liquid; Citrus - chemistry; Citrus fruits; Earth and Environmental Science; Ecology; Ecotoxicology; Environment; Environmental Management; Environmental Monitoring; Fruits; Harvest; Health risks; Hydrochloric acid; Mass Spectrometry; Models, Chemical; Monitoring/Environmental Analysis; Pesticide Residues - analysis; Pesticides; Residues; Retention; Risk assessment; Tandem Mass Spectrometry
• ISSN: 0167-6369; 1573-2959
• DOI: 10.1007/s10661-015-4536-0

The dissipation, residues, and risks of 2,4-dicholrophenoxyacetic acid (2,4- d ) in citrus under field condition were investigated based on a simple ultra-performance LC (UPLC)-MS/MS method. The results indicated that the residue level of 2,4- d in citrus did not degrade gradually with sampling time under field condition. At pre-harvest intervals (PHI) of 20–40 days, 2,4- d residues were 0.021–0.269 mg/kg in citrus flesh, 0.028–0.337 mg/kg in whole citrus, and 0.028–0.376 mg/kg in citrus peel, all bellow the China maximum residue limit in citrus (1 mg/kg). Risks of 2,4- d were assessed by calculation of risk quotient, and the results revealed no significant health risks after consumption of citrus.