摘要
采用在碱性条件下将样品中丁酰肼水解为不对称二甲基联氨，再用水杨醛与之发生衍生化反应的前处理方法，建立了浓缩苹果汁中丁酰肼残留量的气相色诤质谱（GC-MS）测定方法。以丁酰肼浓度对峰面积作图得校正曲线，回归方程为y=100211x-11156（r=O．9996），检出限（3S／N）为0．01mg·kg^-1，测定结果的相对标准偏差为1．6^-6．23％，回收率为92^-107^。
In the Co, C-MS method described, daminozide was hydrolyzed, in the presence of a strong base, to for unsymmetrical dimethylhydrazine, which was then distilled from the apple juice matrix, and derivatized with salicylaldehyde to form salicylaldehyde dimethylhydrazone. The derivatized product was determined by Co, C-MS using selected ion monitoring mode. The calibration curve was obtained by plotting the peak area against the concentration of daminozide giving the linear regression equation, y=100 211 x--11 156 （r=0. 999 6） and a detection limit （3S/ N） of 0. 01 mg . kg^-1. Tests for precision and recovery of this method gave results of RSD＇s in the range of 1.60% to 6.23%, and average recoveries in the range from 92% to 107%.
出处
《理化检验（化学分册）》
CAS
CSCD
北大核心
2006年第9期721-722,725,共3页
Physical Testing and Chemical Analysis(Part B:Chemical Analysis)
