摘要
[目的]建立了采用QuEChERS-HPLC同时测定水溶肥中10种常见违禁添加杀虫剂的分析方法。[方法]样品经乙腈提取和前处理方法优化,以PSA、C_(18)E和GCB为分散固相萃取的吸附剂净化后过滤膜,采用HPLC检测。[结果]在1.0~20.0 mg/L,10种杀虫剂的质量浓度与相应的峰面积间呈良好的线性关系,相关系数为0.9993~1.0000,定量限(LOQ)在0.02~0.09 mg/kg;在1.0、2.0和5.0 mg/kg添加水平下,10种杀虫剂的平均回收率在76.5%~99.4%,相对标准偏差(RSD)在0.33%~2.56%(n=5)。[结论]经实际样品检测验证,该方法高通量、干扰少、效率高、环境友好、准确度高,适用于水溶肥中10种常见杀虫剂的测定。
[Objective]A QuEChERS-HPLC method was developed for the simultaneous determination of 10 common illegal addition insecticide in water-soluble fertilizers.[Method]The sample was extracted by acetonitrile and the pretreatment method was optimized.PSA,C_(18)E and GCB were used as adsorbents for dispersive solid phase extraction.After purification,the filter membrane was used for HPCL detection.[Result]In the range of 1.0-20.0 mg/L,there was a good linear relationship between the mass concentration of 10 kinds of insecticides and the corresponding peak area,the correlation coefficient was 0.9993-1.0000,the LOQ was 0.02-0.09 mg/kg;at the addition levels of 1.0,2.0 and 5.0 mg/kg,the average recovery of 10 kinds of insecticides was 76.5%-99.4%,and RSD was 0.33%-2.56%(n=5).[Conclusion]Tested by actual samples,the method has high throughput,less interference,high efficiency,environmental friendliness and high accuracy.It is suitable for the determination of 10 common insecticide in water-soluble fertilizer.
作者
洪华
阚晓丽
张茜
范琪
余倩
HONG Hua;KAN Xiao-li;ZHANG Qian(Jiangsu Product Quality Supervision and Inspection Institute,Nanjing,Jiangsu 210007)
出处
《安徽农业科学》
CAS
2021年第18期191-194,共4页
Journal of Anhui Agricultural Sciences
