Citation: KONG Cong, ZHOU Zhe, WANG Yang, HUANG Yuan-Fei, SHEN Xiao-Sheng, Dong-Mei, CAI You-Qiong, YU Hui-Juan. Screening of Chemical Drugs in Fishery Inputs by Ultrahigh Performance Liquid Chromatography-Orbitrap High Resolution Mass spectroscopy[J]. Chinese Journal of Analytical Chemistry, ;2017, 45(2): 245-252. doi: 10.11895/j.issn.0253-3820.160653 shu

Screening of Chemical Drugs in Fishery Inputs by Ultrahigh Performance Liquid Chromatography-Orbitrap High Resolution Mass spectroscopy

1.
East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai 200090, China;
2.
Thermo Fisher Scientific Incorporation, Shanghai 201206, China

Received Date: 3 September 2016
Revised Date: 5 December 2016

To screen the illegal substances in fishery inputs, we established the database including the precursor and the daughter ions for these possible components by the quadrupole/orbit-trap mass spectrometer, and the retention time of each drug on the same chromatographic column. And then, the extracted and diluted samples were analyzed and the components in the real samples were identified under the same conditions. Chromatographic analysis was performed on an Accucore RP-MS column (100 mm×2.1 mm, 2.6 μm) using gradient elution with 0.1% formic acid in water and 0.1% formic acid in acetonitrile as mobile phase. Elutes were ionized through heatable electrospray ionization (HESI) in both positive and negative mode simultaneously. Data acquisition was conducted by Full-scan ddMS2 (TopN) mode, in which the full mass profile for a continuous precursor ion injection and the fragments of each high abundant precursor of targeted were acquired with excellent time and mass resolution. Screening was carried out through comparison of the information of real samples with that of standards in the database, which were processed by software (Tracefinder). The Quantification of each component was analyzed based on the precursor ion chromatography acquired by orbit-trap mass spectroscopy, which showed a good linearity between 0.01-1 μg/mL, with R>0.98. The method was validated by checking its minimum screening concentration (0.5 mg/L for drugs and 5 mg/L for feedstuffs) and evaluating the recovery after addition of the standard mixture in real samples (>50%, under the addition of 10 and 100 mg/kg). The results for 68 practical samples demonstrated the effective performance of this method for screening with high-throughput, rapidness and acceptable minimum screening concentration and accuracy, in which 15 of 29 fishery drug samples were screened out for positive components that were not indicated in their labels.
- Fishery drug,
- Screen,
- High resolution mass spectroscopy
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1.
沈阳化工大学材料科学与工程学院沈阳 110142