【作者】 朱春红； 凌云； 雍炜； 储晓刚； 陈正行；

【Author】 Zhu Chunhong~1 Ling Yun~2 Yong Wei~2 Chu Xiaogang~(2*)Chen Zhengxing~1(1 Jiangnan University,Wuxi 214036;2 Chinese Academy of Inspection and Quarantine,Beijing 100025,China)

【机构】 无锡江南大学； 中国检验检疫科学研究院；

【摘要】 建立了超高效液相色谱快速、准确、高灵敏度测定小麦中20种三嗪类除草剂残留量的分析方法,并用于实际样品的分析。样品经丙酮提取、弗罗里硅土柱净化,用超高效液相色谱(UPLC)测定。该法在5 min 内即可完成 20种三嗪类除草荆的分离及检测。20种三嗪类除草剂在0.05～6.0mg/kg 范围内线性良好,相关系数>0.999。在 0.02～1.0mg/kg 浓度范围内,其中19种三嗪除草剂平均加标回收率在72.94%～100.08%之间,相对标准偏差为0. 7%～10.1%。应用此方法对实际小麦样品进行测定分析,结果满意。此方法可同时满足进、出口小麦中多种三嗪类除草剂残留量的检验需要。更多还原

【Abstract】 An analytical method was developed for the simultaneous determination of 20 triazine herbicide residues in wheat using Ultra Performance LC^TM（UPLC）for detection.The triazine herbicides were extracted with acetone from wheat samples.The extract was cleaned up using a Florisil cartridge.The 20 Triazines can be separa- ted and detected in 5 min,which is much shorter than that by the conventional liquid chromatography.The concen- tration ranges of triazine herbicides were 0.05～6.0mg/kg,and the correlation coefficients of the linear were >0.999.The average recoveries of triazine herbicides in spiked wheat ranged from 72.94% to 100.08%,and the relative standard deviations were between 0.7% and 10.1%.The method was also applied to determine triazine herbicide residues in real wheat samples,and the result was satisfactory.It can meet the requirements for simulta- neous determination of many triazine herbicides in import & export inspection for wheat.更多还原