Selective magnetic nanographene oxide solid‐phase extraction with high‐performance liquid chromatography and fluorescence detection for the determination of zearalenone in corn samples

• Main Authors: Thongprapai, Pornpimol, Cheewasedtham, Wilairat, K. F., Chong, Rujiralai, Thitima
• Format: Article
• Language: English
• Published: WILEY-VCH Verlag 2018
• Subjects: QD Chemistry
• Online Access: http://umpir.ump.edu.my/id/eprint/23787/1/Selective%20magnetic%20nanographene%20oxide%20solid%E2%80%90phase%20extraction.pdf; http://umpir.ump.edu.my/id/eprint/23787/; https://doi.org/10.1002/jssc.201800441; https://doi.org/10.1002/jssc.201800441
• Institution: Universiti Malaysia Pahang

A magnetic nanographene oxide sorbent as a selective sorbent for the magnetic solid‐phase extraction combined with high‐performance liquid chromatography and fluorescence detection was developed and proved to be a robust method for zearalenone determination in corn samples. Optimum extraction of zearalenone (20 mg magnetic nanographene oxide sorbent, extraction for 15 min, desorption time of 15 min using 1 mL of 0.5% formic acid in methanol) resulted in low limits of detection (05 mg/L) and quantitation (0.13 mg/L) and good linearity range of 0.13–1.25 mg/L with the correlation coefficient of 0.9957. Acceptable recoveries (79.3–80.6%) with relative standard deviations below 4% and satisfactory intra‐ and interday precisions (2–7.4%) were achieved. Additionally, the proposed method has been proved to be good in several aspects: easily prepared sorbent with high affinity to zearalenone, convenient and fast procedure, and high extraction efficiency.