Citation:
WANG Xin-Mei, XU Gui-Ju, WANG Xiao-Li, WANG Xia, WANG Ming-Lin, ZHAO Ru-Song, LIN Jin-Ming. Melamine/o-Phthalaldehyde Covalent Organic Frameworks for Solid Phase Extraction-Liquid Chromatography-Tandem Mass Spectrometry Analysis of Sulfonamide Antibiotics in Environmental Samples[J]. Chinese Journal of Analytical Chemistry,
;2018, 46(12): 1990-1996.
doi:
10.11895/j.issn.0253-3820.181416
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In this work, melamine/o-phthalaldehyde covalent organic framework was used as a novel trapping media in solid-phase extraction of sulfonamides at ultra-trace levels in real water samples. Six sulfonamides, including sulfadiazine (SDZ), sulfathiazole (ST), sulfapyridine (SPD), sulfamethyldiazine (SM1), sulfamethazine (SM2), sulfamethoxazole (SMX), were absorbed on the SPE cartridge. Important factors affecting extraction effect were optimized by single factor optimization method, and the optimized relevant parameters were as follows:eluent and its volume, 8 mL MA; sample flow rate, 3 mL/min; sample pH, pH=4 and sample volume, 200 mL. Sulfonamide antibiotics were detected and quantified by liquid chromatography-tandem mass spectrometry. Low limits of detection (0.05-0.36 ng/L), wide linearity range (0.25-1000 ng/L), good repeatability and high recovery (82.5%-104.8%) for sulfonamides were obtained under the optimized conditions. The optimized method was used in the analysis of sulfonamides in real environmental water samples (drinking water, tap water and pool water) successfully. The novel COFs as a solid phase trapping material was a good choice for the rapid and effective analysis of sulfonamides at ultra trace levels in environmental water samples.
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