Citation: | WEI Ya, CEN Jianwei, HAO Shuxian, HUANG Hui, ZHAO Yongqiang, XIN Shaoping, LI Laihao. HPLC determination of nitrofurazone in sediment of aquaculture pond[J]. South China Fisheries Science, 2014, 10(1): 71-77. DOI: 10.3969/j.issn.2095-0780.2014.01.011 |
This paper studies the extraction and detection methods for nitrofurazone residues in sediment of aquaculture pond. The extraction by methanol-methylene chloride (3:7) mixed solvent achieved good effects. We compared oscillation extraction with ultrasonic-assisted heating extraction, finding that the latter extracted more. The HPLC chromatographic conditions had been optimized. Isolated on a C18 reversed-phase column, gradient elution obtained better peaks and better separation than isocratic elution. With methanol-methylene chloride (3:7) as extraction solvent, the ultrasonic-assisted heating method (35 kHz, intensity of 100%, 40 ℃) for extraction obtained 80%~95% recovery, and the relative standard of deviation was less than 10% and the detection limit reached 0.250 μg·kg-1. The user-friendly method has high recovery, good stability and high sensitivity.
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