摘要
本文建立了用毛细管气相色谱法定量分析面粉中苯甲酸含量的方法，选取益酸－乙醇－乙醚提取剂并采用旋涡混合器提取，使提取率达９５％以上。采取了毛细管色谱柱分离了基体对苯甲酸的干扰，其精度达３．４％，最小检知量达４．２×１０￣（－９）ｇ，回收率达９６％，均较高，完全满足面粉中苯甲酸测定要求。
This paper describes a method for analysing phenylformic acid in flourusing capillary gas chromatography.A mixture of hydrochloric acid .alcohol and ether is selected as extracting solvent,with a vorvac mixer .The extrct rate is over 95%which is not reprted yet.The base interferes is separated completely on capillary columns.The precision is 3.4%and the recovery is 96%.The minimun de-tectable amounts to 4.2x10g. This process is satisfactory for determining phenyl-formic acid in flour.
出处
《大连轻工业学院学报》
1994年第3期87-90,共4页
Journal of Dalian Institute of Light Industry
