液相色谱-串联质谱法测定大蒜中40种农药残留
Physical Testing and Chemical Analysis Part B:Chemical Analysis（2015）
Abstract
采用液相色谱-串联质谱法同时测定大蒜中40种农药的残留量.样品经磷酸酸化的乙腈提取后,采用QuEChERS方法净化,净化液采用Waters HSS T3 C18色谱柱分离,以甲酸-氨水-水(0.01+0.05+99.94)混合溶液和甲醇的混合液为流动相进行梯度洗脱,质谱中选择电喷雾电离源和多反应监测模式.40种农药的质量浓度均在5.0～400 μg·L-1范围内与峰面积呈线性关系,测定下限(10S/N)在0.1～5 μg·kg 1之间.加标回收率在70.1％～129％之间,测定值的相对标准偏差(n=5)在0.6％～9.3％之间.
MoreAI Read Science
Must-Reading Tree
Example
Generate MRT to find the research sequence of this paper
Chat Paper
Summary is being generated by the instructions you defined