title: Chronic and acute risk assessment of human exposed to novaluron-bifenthrin mixture in cabbage.
abstract: Based on the dissipation and residual level in cabbage determined by gas chromatography coupled with an electron capture detector (GC-ECD), chronic and acute risk assessments of the novaluron and bifenthrin were investigated. At different spiked levels, mean recoveries were between 81 and 108 % with relative standard deviations (RSDs) from 1.1 to 6.8 %. The limit of quantification (LOQ) was 0.01 mg kg(-1), and good linearity with correlation coefficient (>0.9997) were obtained. The half-lives of novaluron and bifenthrin in cabbage were in the range of 3.2~10 days. Based on the consumption data in China, the risk quotients (RQs) of novaluron and bifenthrin were all below 100 %. The chronic and acute risk of novaluron in cabbage was relatively low, while bifenthrin exerts higher acute risk to humans than chronic risk. The obtained results indicated that the use of novaluron-bifenthrin mixture does not seem to pose any chronic or acute risk to humans even if cabbages are consumed at high application dosages and short preharvest interval (PHI).
authors.affiliation: College of Science, China Agricultural University, Beijing, 100193, China.|State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, China.
authors.forename: Kaiwei
authors.initials: K
authors.lastname: Shi
authors.affiliation: State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, China. lili2008@ioz.ac.cn.
authors.forename: Li
authors.initials: L
authors.lastname: Li
authors.affiliation: State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, China.
authors.forename: Wei
authors.initials: W
authors.lastname: Li
authors.affiliation: State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, China.
authors.forename: Longfei
authors.initials: L
authors.lastname: Yuan
authors.affiliation: College of Science, China Agricultural University, Beijing, 100193, China. liufengmao@cau.edu.cn.
authors.forename: Fengmao
authors.initials: F
authors.lastname: Liu
mesh_terms: D001937:Brassica / Q000737:chemistry*; D002681:China; D002849:Chromatography, Gas; D004784:Environmental Monitoring / Q000379:methods; D006207:Half-Life; D010573:Pesticide Residues / Q000032:analysis*; D010671:Phenylurea Compounds / Q000032:analysis*; D011722:Pyrethrins / Q000032:analysis*; D018570:Risk Assessment
chemical_list: D010573:Pesticide Residues; D010671:Phenylurea Compounds; D011722:Pyrethrins; C099952:bifenthrin; C471805:novaluron
keywords: Bifenthrin; Cabbage; Novaluron; Risk assessment