Determination of 25 polybrominated diphenyl ethers in Chinese mitten crab ecosystems by gas chromatography-mass spectrometry
文献类型： 外文期刊
作者： Zhang, Qicai 1 ; Song, Weiguo 1 ; Wang, Xianli 1 ; Liu, Chengbin 1 ; Chen, Shanshan 1 ; Li, Huaxi 1 ; Rao, Qinxiong 1 ;
作者机构： 1.Shanghai Acad Agr Sci, Inst Agri Food Stand & Testing Technol, Shanghai 201106, Peoples R China
2.Shanghai Serv Platform Agroprod Qual & Safety Eva, Shanghai 201106, Peoples R China
期刊名称：ANALYTICAL METHODS （ 影响因子：3.1； 五年影响因子：3.0 ）
ISSN： 1759-9660
年卷期： 2023 年 15 卷 36 期
页码：
收录情况： SCI
摘要： A sensitive and reliable method for determining 25 polybrominated diphenyl ethers (PBDEs) in Chinese mitten crabs and their ecosystems ranging from the growing environment to edible feed by gas chromatography coupled to triple quadrupole mass spectrometry with advanced electron ionization (GC-AEI-MS/MS) was developed and validated. Accelerated solvent extraction (ASE) and liquid-liquid extraction were used to extract solid and water samples, respectively. On the basis of a traditional acid-base silica column, deactivated silica was added and n-hexane elution was used to increase the effect of separation and purification. Two oven temperature programs were applied to achieve good separation of low brominated congeners and increase the sensitivity of high brominated congeners. The method provided good linearity (>0.9996). The recoveries of four matrices were in the range of 82-115% and the method quantification limits (MQLs) in crabs, feed, sediment and water ranged from 0.36-6 pg per g wet weight, 0.69-22.29 pg per g dry weight, 1.02-25.26 pg per g dry weight, and 2.43-40.14 pg L-1, respectively. The proposed method was used for ten samples from two aquatic sites and PBDEs were detected in Chinese mitten crabs, commercial feed and sediment, with the highest in crabs. This analytical technique can be used to monitor the content and the accumulation behavior of PBDEs in Chinese mitten crab ecosystems or other aquaculture systems.
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