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Determination of 5-nitro-2-furaldehyde as marker residue for nitrofurazone treatment in farmed shrimps and with addressing the use of a novel internal standard

文献类型: 外文期刊

作者: Wang, Qiang 1 ; Wang, Xu-Feng 1 ; Jiang, Yong-Yuan 1 ; Li, Zhi-Guang 1 ; Cai, Nan 1 ; Guan, Wan-Qi 1 ; Huang, Ke 1 ; Zhao 1 ;

作者机构: 1.Chinese Acad Fishery Sci, South China Sea Fisheries Res Inst, Guangzhou 510300, Guangdong, Peoples R China

2.Minist Agr & Rural Affairs, Key Lab Aquat Prod Proc, Guangzhou 510300, Guangdong, Peoples R China

3.Guangdong Prov Key Lab Fishery Ecol & Environm, Guangzhou 510300, Guangdong, Peoples R China

期刊名称:SCIENTIFIC REPORTS ( 影响因子:4.379; 五年影响因子:5.133 )

ISSN: 2045-2322

年卷期: 2019 年 9 卷

页码:

收录情况: SCI

摘要: We developed a significantly improved ultra-high performance liquid chromatography-tandem mass spectrometry method for determination of 5-nitro-2-furaldehyde (NF) as a surrogate using a novel internal standard for the detection of nitrofurazone. We used 2,4-dinitrophenylhydrazine derivatization and furfura I as the internal standard. Derivatization was easily performed in HCI using ultrasonic manipulation for 5 min followed by liquid extraction using ethyl acetate. The samples were concentrated and purified using reverse phase and alumina cartridges in tandem. The derivatives were separated using a linear gradient elution on a C-18 column with methanol and water as the mobile phase in negative ionization mode and multiple reaction monitoring. Under the optimized conditions, the calibration curves were linear from 0.2 to 20 mu g/L with correlation coefficients >0.999. Mean recoveries were 80.8 to 104.4% with the intra- and inter-day relative standard deviations <15% at spiking levels of 0.1 to 10 mu g/kg. The limits of detection and quantification were 0.05 and 0.1 mu g/kg, respectively. This method is a robust tool for the identification and quantitative determination of NF in shrimp samples.

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