期刊
FOOD CHEMISTRY
卷 345, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.foodchem.2020.128842
关键词
LC-MS/MS; Bridged bis(beta-cyclodextrin)-bonded chiral stationary phase; Simultaneous enantiomeric determination; Triazole fungicides; Fruits and vegetables
资金
- National Natural Science Foundation of China [31860469, 21165012]
- Open Project of State Key Laboratory of Food Science and Technology, Nanchang University, China [SKLF-KF-201605]
A new high-throughput LC-MS/MS method was developed for convenient monitoring of chiral pesticides in fruits and vegetables, enabling simultaneous enantio-separation of multiple analytes and simplification of sample pre-treatment. This method demonstrated good linearity, high recoveries, and accurate determination of enantiomeric fractions in strawberry, cucumber, and tomato samples.
A LC-MS/MS method for simultaneous determination of twelve triazole enantiomers (hexaconazole, tebuconazole, triticonazole, flutriafol, diniconazole, paclobutrazol) in six fruits and vegetables was established based on a stable and self-made bridged bis(beta-cyclodextrin)-bonded chiral stationary phase. Simultaneous enantio-separation of multiple analytes was achieved with resolution ca. 1.67-2.14. Magnetically assisted QuECHERS was used to simplify and optimize sample pre-treatment. The new method was validated (accuracy, precision, matrix effect, etc.). Good linearity (0.5-20 mu g/L, R-2 > 0.99) and high recoveries (76.1-103.4%) based on intra- and inter-day relative standard deviation (RSDs) (2.6-11.9%), were obtained. Furthermore, a total of 90 samples were analyzed using this method and enantiomeric fractions (EF) for tebuconazole in strawberry and cucumber (0.63 and 0.43, respectively) were determined as well as 0.57 for flutriafol in tomato. This high-throughput detection method supported a convenient enantiomeric monitoring for chiral pesticides in fruits and vegetables.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据