摘要
采用气相色谱-串联质谱法测定白酒中16种增塑剂的含量。样品经30℃水浴真空旋转蒸发10min去除乙醇后,用正己烷萃取,漩涡振荡1min,取上层有机相用TR-5MS色谱柱分离,选择反应监测扫描(SRM)模式测定。16种增塑剂的质量浓度在5~1 000μg·L-1范围内与其峰面积呈线性关系,检出限(3S/N)在5~15μg·kg-1之间。在50,100,500μg·kg-1等3个浓度水平进行加标回收试验,回收率在70.5%~120%之间,相对标准偏差(n=6)小于15%。
GC-MS/MS was applied to the determination of 16 plasticizers in white spirit.Alcohol in the sample was removed by vacuum rotary evaporation for 10 min in 30℃ water bath,then the sample was extracted with n-hexane and vortex oscillated for 1min.The extract was separated with TR-5MS column,and selected reaction monitoring mode was adopted in MS/MS determination.Liner relationships between values of peak area and mass concentration of the 16 plasticizers were kept in the range of 5-1 000μg·L-1,with detection limits(3S/N)in the range of 5-15μg·kg-1.Tests for recovery were made at 3concentration levels of 50,100 and 500μg·kg-1,giving values of recovery and RSD′s(n=6)in the ranges of 70.5%-120%and less than 15%respectively.
出处
《理化检验（化学分册）》
CAS
CSCD
北大核心
2014年第9期1127-1130,共4页
Physical Testing and Chemical Analysis(Part B:Chemical Analysis)
