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요약정보
超高效合相色谱-质谱法快速分析烟叶中游离脂肪酸 / Rapid analysis of free fatty acids in tobacco leaves by UPC2/MS
Resource Type
Academic Journal
Authors
喻世涛
;
陶永峰
;
姚建武
;
魏刚
;
高颂
;
杨鑫
;
唐向兵
;
YU Shi-tao
;
TAO Yong-feng
;
YAO Jian-wu
;
WEI Gang
;
GAO Song
;
YANG Xin
;
TANG Xiang-bing
Source
湖北农业科学 / Hubei Agricultural Sciences
. 60(5):108-112
Subject
超高效合相色谱-质谱法
烟叶
游离脂肪酸
Language
Chinese
ISSN
0439-8114
Online Access
Find it @ DONGA
초록
为快速检测分析烟叶中游离脂肪酸含量,建立了利用超高效合相色谱-质谱法(UPC2/MS)快速分析8种烟叶中棕榈酸、硬脂酸、油酸、亚油酸和亚麻酸5种脂肪酸的方法,并利用该法鉴别了32种游离脂肪酸.结果表明,采用ACQUITY UPC2色谱系统和Xevo TQS质谱仪,以HSS C18色谱柱(SB 1.8μm,2.1 mm×150 mm)为分析柱,以CO2和含0.1%甲酸的甲醇溶液为流动相进行梯度洗脱,5种脂肪酸在2.2~72.2 ng/mL具有较好的线性关系(r>0.999),检出限(S/N≥3)为0.06~0.13 ng/mL,定量限(S/N≥10)为0.19~0.41 ng/mL,精密度RSD为5.2%~8.0%,稳定性RSD为4.3%~7.5%,重复性试验RSD为3.0%~6.7%,不同添加水平下的平均回收率为95.8%~97.2%;8种烟叶中棕榈酸、硬脂酸、油酸、亚油酸和亚麻酸的含量在0.12~1.21 mg/g.该方法分析速度快、灵敏度高、选择性强,且样品前处理简单,无需衍生化,适用于烟叶中游离脂肪酸的测定.
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