中南大学学报(英文版)
中南大學學報(英文版)
중남대학학보(영문판)
JOURNAL OF CENTRAL SOUTH UNIVERSITY OF TECHNOLOGY(ENGLISH EDITION)
2015年
2期
472-477
,共6页
高梦鸿%高乃云%谢茴茴%安娜%邓扬%戎文磊
高夢鴻%高迺雲%謝茴茴%安娜%鄧颺%戎文磊
고몽홍%고내운%사회회%안나%산양%융문뢰
liquid-liquid extraction%gas chromatography-mass spectrometry%β-ionone%water
A simple and rapid technique based on liquid?liquid extraction coupled to gas chromatography-mass spectrometric detection (LLE-GC-MS) was developed for analysis of taste and odour compoundβ-ionone in water. Instrument parameters including programmed oven temperature, injection temperature and ion source temperature were evaluated and optimized. Effects of extraction time, ionic strength and pH on the detection efficiency were investigated and optimum conditions were 8 min of extraction time, without NaCl addition at pH=9. Good linearity (R2=0.9997) was obtained when the linear range was 10?500μg/L. The recoveries ofβ-ionone in ultrapure water and tap water samples were 88%?95% and 110%?114%, respectively. The relative standard deviations (RSD) were less than 10%. The method detection limit (MDL) and rejection quality level (RQL) were achieved at 1.98μg/L and 6.53μg/L, respectively. LLE-GC-MS was demonstrated to be a rapid and convenient method for the determination ofβ-ionone in water samples.