• EI
  • Scopus
  • 食品科学与工程领域高质量科技期刊分级目录第一方阵T1
  • DOAJ
  • EBSCO
  • 北大核心期刊
  • 中国核心学术期刊RCCSE
  • JST China
  • FSTA
  • 中国精品科技期刊
  • 中国农业核心期刊
  • CA
  • WJCI
  • 中国科技核心期刊CSTPCD
  • 中国生物医学SinoMed
中国精品科技期刊2020
吕惠萍, 马心英, 陈美凤, 董振东, 信明浩. 聚L-苏氨酸修饰电极法测定特丁基对苯二酚含量[J]. 食品工业科技, 2020, 41(1): 236-240,327. DOI: 10.13386/j.issn1002-0306.2020.01.038
引用本文: 吕惠萍, 马心英, 陈美凤, 董振东, 信明浩. 聚L-苏氨酸修饰电极法测定特丁基对苯二酚含量[J]. 食品工业科技, 2020, 41(1): 236-240,327. DOI: 10.13386/j.issn1002-0306.2020.01.038
LV Hui-ping, MA Xin-ying, CHEN Mei-feng, DONG Zhen-dong, XIN Ming-hao. Determination of Tert-butylhydroquinone by a Poly-L-threonine Modified Electrode[J]. Science and Technology of Food Industry, 2020, 41(1): 236-240,327. DOI: 10.13386/j.issn1002-0306.2020.01.038
Citation: LV Hui-ping, MA Xin-ying, CHEN Mei-feng, DONG Zhen-dong, XIN Ming-hao. Determination of Tert-butylhydroquinone by a Poly-L-threonine Modified Electrode[J]. Science and Technology of Food Industry, 2020, 41(1): 236-240,327. DOI: 10.13386/j.issn1002-0306.2020.01.038

聚L-苏氨酸修饰电极法测定特丁基对苯二酚含量

Determination of Tert-butylhydroquinone by a Poly-L-threonine Modified Electrode

  • 摘要: 利用电化学方法将L-苏氨酸聚合到玻碳电极(glassy carbon electrode,GCE)表面,制备了聚L-苏氨酸修饰电极(poly L-threonine modified glassy carbon electrode,PLTE/GCE)。研究了特丁基对苯二酚在该修饰电极上的电化学行为,建立了测定食品中添加剂特丁基对苯二酚(tert-butylhydroquinone,TBHQ)的新方法。在浓度为2.0×10-7~2.0×10-5 mol·L-1范围内,特丁基对苯二酚在聚L-苏氨酸修饰电极上的氧化峰电流(ipa)与其浓度呈良好的线性关系,相关系数r=0.9994,检出限为8.6×10-9 mol·L-1。对样品中特丁基对苯二酚的进行检测,回收率范围在98.5%~102.6%之间。

     

    Abstract: Poly L-threonine modified glassy carbon electrode was prepared by electropolymerization of L-threonine. The electrochemical behavior of tert-butyl hydroquinone(TBHQ)was studied by cyclic voltammetry(CV). A new method for the determination of TBHQ in food was established. Under the optimal conditions,good liner relationships between current intensities and TBHQ concentrations were obtained in the ranges of 2.0×10-7~2.0×10-5 mol·L-1,with correlation coefficients(r)of 0.9994,the detection limit was 8.6×10-9 mol·L-1. The modified electrode can be applied to the analysis of TBHQ in sample with recoveries of 98.5%~102.6%.

     

/

返回文章
返回