摘要
碱性条件下,阿魏酸对Luminol-H2O2-纳米银化学发光体系有较强的抑制作用,基于此,结合流动注射技术,建立了测定阿魏酸的新方法。研究了影响化学发光强度的各种因素,并初步探讨了可能的发光机理。在最佳实验条件下,阿魏酸浓度在1.0×10-8～4.0×10-5mol/L范围内与相对发光强度呈线性关系,检出限(3σ)为2.0×10-9mol/L。对2.0×10-7mol/L的阿魏酸平行测定9次,相对标准偏差(RSD)为2.3%。将该法应用于太太美容口服液中阿魏酸的测定,结果满意。
A novel method for the determination of ferulic acid was developed based on its inhibition effect on the luminol-H2O2-silver nanoparticles chemiluminescence system.Various factors influencing the chemiluminescence system were investigated and the possible mechanism was also studied.Under the optimum conditions,the linear range for the determination of ferulic acid was from 1.0×10-8 to 4.0×10-5 mol/L with a detection limit（3σ） of 2.0×10-9 mol/L.The relative standard deviation was 2.3% for 2.0×10-7 mol/L ferulic acid solution in nine repeated measurements.The proposed method was applied in the determination of ferulic acid in Taitai Beauty samples with satisfactory results.
出处
《分析测试学报》
CAS
CSCD
北大核心
2013年第7期882-885,共4页
Journal of Instrumental Analysis
基金
陕西省科技统筹创新工程计划项目(2012KTDZ02-02-02)
陕西省尾矿资源综合利用重点实验室(商洛学院)
关键词
化学发光
纳米银
鲁米诺
阿魏酸
chemiluminescence
Ag nanoparticles
luminol
ferulic acid
