期刊论文

中文

分析测试学报

1004-4957

2003

22

5

82-84

10.3969/j.issn.1004-4957.2003.05.024

本校为第一机构

研究了固相微萃取-气相色谱-质谱( SPME- GC- MS)联用方法检测啤酒中的 N-亚硝基二乙胺( NDEA)、 N-亚硝基吡咯烷( NPYR)、 N-亚硝基二丁胺( NDBA), 采用聚二甲基硅氧烷 /二乙烯苯( PDMS/DVB)萃取头, 对影响固相微萃取效率的萃取时间、搅拌速度以及萃取方式等进行了优化, 在优化实验条件下, 方法的线性范围在 12.5 ～ 250 μg/L之间, 相关系数 r为 0.997 1～ 0.999 5, 检出限分别为 NDEA 4.50 μg/L, NPYR 8.99 μg/L, NDBA 2.27 μg/L, NDBA回收率为 86%～ 96%, 相对标准偏差 6.2%～ 8.9%, 该法简化了前处理步骤, 快速、方便, 结果满意.

A solid-phase microextraction(SPME)coupled with gas chromatography-mass spectrometry has been used for determination of N_nitrosodiethylamine,N_nitrosodi_ n_butylamine,N_nitrosopropylamine in beer.A polydimethylsiloxane/divinylbenzene coated fiber was used.The experimental conditions,such as extraction time,stirring speed and the way of extraction,were optimized.The linear range was between12.5and250μg/L with the detection limits of2.27to8.99μg/L.The average recoveries of NDBA were86%～96%and the RSD was6.2%～8.9%.It is a solvent_sav...