农药学学报2016，Vol.18Issue(5)：612-618,7.DOI:10.16801/j.issn.1008-7303.2016.0086
多效唑在茄子中的消解动态与急性膳食摄入风险评估
Dissipation and acute dietary intake risk assessment of paclobutrazol inSolanum melongena
摘要
Abstract
In order to study the effect of paclobutrazol onSolanum melongena, and investigate the residue behavior and the dietary intake risk of paclobutrazol inSolanum melongena, the residual trial of paclobutrazol inSolanum melongena was carried. A new method was developed to determine the residue of paclobutrazol inSolanum melongena and the influence of paclobutrazol on the yield and quality ofSolanum melongena was detected. The acute risk assessment of paclobutrazol inSolanum melongena to different population was conducted. The samples were extracted with acetic acid-acetonitrile and determined by UPLC-MS/MS. The calibration curve showed good linear relationship in the concentration of 0.02-5.0 mg/L. The limit of detection (LOD) and the limit of quantification (LOQ)were respectively 0.005 and 0.02 mg/kg. The recoveries ranged from 88% to 92%, and the relative standard deviation (RSD) was from 5.1% to 6.9%. The results indicated that the dissipation of paclobutrazol inSolanum melongena fitted to the first order kinetics with the half-live of 1.45 days and the highest residue of paclobutrazol inSolanum melongena was 0.02 mg/kg at the harvest period. The results also demonstrated that the application of paclobutrazol decreased the plant height, and increased the yield and content of vitamin C, soluble sugar and flavonoid. The recommended dosage of paclobutrazol applied toSolanum melongena was 12 a.i. g/hm2 and applied twice. The national estimated short-term intake (NESTI)of paclobutrazol residue inSolanum melongena for different population was 0.70-1.9 µg/kg bw, the percentage of ARfD was 0.07%-1.9%, and both results were within an acceptable limits, which indicated the low risk of paclobutrazol inSolanum melongena.关键词
多效唑/茄子/残留/消解动态/风险评估Key words
paclobutrazol/Solanum melongena/residue/dissipation dynamic/risk assessment分类
化学化工引用本文复制引用
兰珊珊,林涛,林昕,杨芳,沙凌杰,刘宏程..多效唑在茄子中的消解动态与急性膳食摄入风险评估[J].农药学学报,2016,18(5):612-618,7.基金项目
云南省社会发展科技计划项目(2012CA005)；国家蔬菜产品质量安全风险评估专项(GJFP201500101)；云南省科技创新人才计划(2015HC025) （2012CA005）
