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Citation: YANG Qiuhong, YANG Yibin, XU Ning, LIU Yongtao, DONG Jing, AI Xiaohui. Determination of methylene bisthiocyanate in aquatic products by gas chromatography with pulsed-flame photometric detector[J]. Chinese Journal of Chromatography, ;2017, 35(8): 881-885. doi: 10.3724/SP.J.1123.2017.04016 shu

Determination of methylene bisthiocyanate in aquatic products by gas chromatography with pulsed-flame photometric detector

Yangtze River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Key Laboratory of Control of Quality and Safety for Aquatic Products, Ministry of Agriculture, Wuhan 430223, China

Received Date: 16 April 2017

Fund Project: Special Fund of Agro-Scientific Research in the Public Interest (No. 201503108-CC-1).

A novel method was developed for the determination of methylene bisthiocyanate (MBT) in aquatic products by gas chromatography with pulsed-flame photometric detector (GC-PFPD). The samples were extracted by dichloromethane-n-hexane (1:1, v/v), concentrated and cleaned up by neutral-alumina SPE cartridges. The extracts were eluted with 8 mL dichloromethane, and blown to dryness by nitrogen at 35℃. The final extracts were redissolved with a mixture of dichloromethane-n-hexane (1:1, v/v), separated by an HP-5MS quartz capillary column (30 m×0.32 mm×0.25 μ m) and detected by PFPD with external standard method. Under the optimum experimental conditions, the standard curve was linear in the range of 1.0-20.0 mg/L with correlation coefficient of 0.9971. The limit of detection was 0.1 mg/kg. Recoveries ranged from 65.6% to 97.6% with RSDs of 6.32%-12.8% (n=7). The method has good innovative, advanced and practical values.
- gas chromatography (GC),
- pulsed-flame photometric detector (PFPD),
- solid phase extraction (SPE),
- methylene bisthiocyanate (MBT),
- aquatic products
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