•  
  •  
  •  
  •  
  •  
  •  
  •  
  •  
  •  
期刊检索


检索
检索项:
检索词:
总目录
  • WCSB9︱2019(第九届)世界采样和混样大会 查看全文>>
  • 关于召开第十五届全国青年分析测试学术报告会的通知 查看全文>>
友情链接
基于油菜籽碳量子点荧光恢复测定盐酸米诺环素的研究
    点此下载全文
作者单位
武文波,张越诚,马红燕,田锐,刘晓莉 延安大学化学与化工学院延安市分析技术与检测重点实验室 
基金项目:延安大学科研计划青年基金项目(YDQ2018-17);延安大学研究生科研创新项目(YCX201824)
中文摘要:以油菜籽和水为原料,一步合成了强荧光碳量子点(CQDs)。基于KMnO4能使该CQDs的荧光显著猝灭;而当有盐酸米诺环素(MINO)存在时,CQDs-KMnO4体系的荧光恢复,使荧光信号重新“打开”的原理,提出了以油菜籽CQDs荧光信号的“关开”为荧光探针测定盐酸米诺环素的新方法。方法的线性范围为5.0×10-7~1.0×10-5 mol/L,相关系数r=0.999 5,方法检出限为4.9×10-7 mol/L。方法用于样品中盐酸米诺环素的测定,回收率为99.6%~100%。通过紫外-可见吸收光谱的变化和荧光寿命的测定,确定CQDs与KMnO4间的猝灭类型为动态猝灭。同时对体系的“关-开”机理进行了初步探讨。
中文关键词:碳量子点  油菜籽  盐酸米诺环素  “关-开”型荧光探针  高锰酸钾
 
Determination of Minocycline Hydrochloride Using a Novel Fluorescence Turn-on Method Based on Rapeseed Carbon Quantum Dots
Abstract:In this paper,a new fluorescent carbon quantum dots(CQDs)were synthesized by one-step method using rapeseed and water as raw material.The experiments showed that potassium permanganate(KMnO4)could effectively quench the fluorescence of the CQDs.However,the fluorescence of CQDs-KMnO4 system restored reversibly in the presence of minocycline hydrochloride.Based on this principle,a new method was proposed for the determination of minocycline hydrochloride with the“off-on”fluorescence signal of rapeseed CQDs as a fluorescent probe.Under the optimum conditions,the linear range of the method was 5.0×10-7 mol/L to 1.0×10-5 mol/L with a correlation coefficient of 0.999 5 and a detection limit of 4.9×10-7 mol/L.The method was used in the determination of minocycline hydrochloride in samples with a recovery of 99.6%-100%.The mechanisms for CQDs fluorescence quenched by KMnO4 and recovered by minocycline hydrochloride were studied.
Key Words:carbon quantum dots  rapeseed  minocycline hydrochloride  “off-on”fluorescent probe  potassium permanganate
引用本文:武文波,张越诚,马红燕,田锐,刘晓莉.基于油菜籽碳量子点荧光恢复测定盐酸米诺环素的研究[J].分析测试学报,2019,(4):471-476.
摘要点击次数: 56
全文下载次数: 60
查看全文  查看/发表评论  下载PDF阅读器