河北大学学报(自然科学版) ›› 2016, Vol. 36 ›› Issue (3): 257-263.DOI: 10.3969/j.issn.1000-1565.2016.03.007

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毛细管电泳电化学发光检测香草扁桃酸和高香草酸

杨洋,孙雪梅,李传龙   

  • 收稿日期:2015-08-23 出版日期:2016-05-25 发布日期:2016-05-25
  • 通讯作者: 孙雪梅(1967—),女,山东青岛人,青岛科技大学副教授,主要从事毛细管电泳研究.E-mail:2634702755@qq.com
  • 作者简介:杨洋(1990—),女,河北沧州人,青岛科技大学在读硕士研究生. E-mail:1193428612@qq.com
  • 基金资助:
    山东省自然科学基金资助项目(ZR2009BM029)

Determination of vanilla mandelic acid and homovanillic acid based on capillay electrophoresis combinated with electrochemiluminescence detection

YANG Yang,SUN Xuemei,LI Chuanlong   

  1. Key Laboratory of Eco-chemical Engineering, Ministry of Education, College of Chemistry andMolecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
  • Received:2015-08-23 Online:2016-05-25 Published:2016-05-25

摘要: 利用毛细管电泳电化学发光(CE-ECL)法检测了尿样中的香草扁桃酸(VMA)和高香草酸(HVA),得到了最佳的分离检测条件:50 mmol/L磷酸盐缓冲溶液(pH 8.2);分离电压16 kV;检测电势1.2 V(相对于饱和甘汞电极).在最佳条件下,VMA和HVA的浓度检测限(S/N=3)分别为5.0×10-7 mol/L和6.1×10-7 mol/L,线性回归系数分别为0.999 3和0.997 9.并以此方法将尿液中的VMA和HVA在10 min内有效地分离检测,不受其他干扰,得到加标回收率分别为98%和99%,取得了满意的结果.

关键词: 毛细管电泳, 电化学发光检测, 香草扁桃酸, 高香草酸

Abstract: Vanilla mandelic acid(VMA)and homovanillic acid(HVA)in the urine were detected by capillary electrophoresis with electrochemiluminescence detection(CE-ECL).The following conditions were suitable for the determination of VMA and HVA:running buffer,50 mmol/L NaH2PO4-Na2HPO4(pH=8.2);separation voltage,16 kV;detection potential,1.2 V(vs.saturated calomel electrode(SCE)).Under the optimum conditions of detection,satisfactory sensitivities(LOD of 5.0×10-7 mol/L for VMA and 6.1×10-7 mol/L for HVA at S/N=3)were obtained,the correlation coefficients of the method were 0.999 3 and 0.997 9,respectively.The determination of these metabolites in human urine was completed within 10 min without any interferences,the recoveries were VMA 98% and HVA 99%,the result obtained is satisfactory.

Key words: capillary electrophoresis, electrochemiluminescence detection, vanilla mandelic acid, homovanillic acid

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