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Chemistry and Industry of Forest Products ›› 2020, Vol. 40 ›› Issue (1): 25-30.doi: 10.3969/j.issn.0253-2417.2020.01.004

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Determination of Magnolol Based on Ru(bpy)32+-doped Silica/Urushiol Electrochemiluminescence Sensor

Lei ZENG1,2(),Yu CAO1,2,Fuhou LEI2,Bo'an SHI1,2,*()   

  1. 1. School of Chemical and Environmental Engineering, Hubei Minzu University, Enshi 445000, China
    2. School of Chemistry and Chemical Engineering, Guangxi key Laboratory of Chemistry and Engineering of Forest Products, Guangxi University for Nationalities, Nanning 530006, China
  • Received:2019-07-25 Online:2020-02-28 Published:2020-03-06
  • Contact: Bo'an SHI E-mail:zengleigfz@163.com;shiboan@163.com
  • Supported by:
    国家自然科学基金资助项目(31460172);广西林产化学与工程重点实验室开放基金资助项目(GXFC16-02)

Abstract:

An electrochemiluminescence (ECL) sensor for magnolol was developed based on tris(2, 2-bipyridyl)ruthenium (Ⅱ) (Ru(bpy)32+)-doped silica (RuDS)-urushiol composits film modified glassy carbon electrode (GCE).The ECL analytical performances of this ECL sensor for magnolol based on its enhancement ECL emission of Ru(bpy)32+ were investigated. The experimental parameters influencing the ECL intensity were studied. The analytical approach based on the system was developed under the optimum condition. The enhanced ECL intensity was linear with the magnolol concentration in the range of 8×10-8-8×10-5 g/L. The detection limit was 3.7×10-8 g/L and the relative standard deviation was 3.5% for 8 μg/L magnolol(n=8). The good recoveries of melamine in the range of 99.8%-103% were obtained in synthetic magnolol mixture samples, which showed that the ECL sensor exhibited excellent repeatability and stability.

Key words: Ru (bpy)32+ doped silica (RuDS), urushiol, magnolol, modified glassy carbon electrode, electrochemiluminescence sensor

CLC Number: