固相微萃取结合气相色谱-质谱检测饮用水中5种异味化合物.pdf

6 3 Vol. 6 No. 3 2015 3 Journal of Food Safety and Quality Mar. , 2015 张 亚, 李泽仟, 刘梦娅, 刘建彬, 宋焕禄* (, 100048) 摘 要: 目的 (SPME)-5 方法 CAR/DVB/PDMS 5 40 mL , 6 g NaCl, 80 ℃20 min, 40 min, -, 5 (2- (MIB)2,4,6- (2,4,6-TCA), (GSM), 2--3-(IPMP), 2--3- (IBMP))结果 : 65 μm PDMS/CAR/DVB , 30%(m/v), 60 ℃, 40 min 5 1~100 ng/L , R20.971, 1.01.00.81.01.0 ng/L, 10%结 论 , , 关键词: ; ; -; Detection of 5 off-flavors in drinking water by solid phase micro-extraction coupled with gas chromatography-mass spectrometry * ZHANG Ya, LI Ze-Qian, LIU Meng-Ya, LIU Jian-Bin, SONG Huan-Lu (Laboratory of Molecular Sensory Science , Beijing Technology and Business University , Beijing 100048, China) ABSTRACT: Objective To establish a method to detect 5 kinds of trace amounts of volatile odor compounds in drinking water by solid phase micro-extraction (SPME) combined with gas chromatography- mass spectrometry. Methods CAR/DVB/PDMS fiber coating was inserted in 40 mL vial with 5 kinds of standard compounds, adding 6 g NaCl, under 80 ℃ balancing 20 min, adsorbing 40 min, and 5 kinds of compounds that often causing off-flavor in drinking water, including 2-methylisoborneol (2-MIB), 2,4,