陕西师范大学学报(自然科学版)
陝西師範大學學報(自然科學版)
협서사범대학학보(자연과학판)
JOURNAL OF SHAANXI NORMAL UNIVERSITY(NATURAL SCIENCE EDITION)
2015年
3期
43-46
,共4页
毛细管电泳%化学发光%抗坏血酸%柱内还原
毛細管電泳%化學髮光%抗壞血痠%柱內還原
모세관전영%화학발광%항배혈산%주내환원
capillary electrophoresis%chemiluminescence%ascorbic acid%in-capillary reaction
建立了一种毛细管柱内反应毛细管区带电泳分离化学发光检测痕量抗坏血酸的新方法。方法基于酸性重铬酸钾在毛细管柱内与抗坏血酸发生氧化还原反应生成具有化学发光催化活性的Cr(Ⅲ),通过毛细管电泳分离化学发光法检测 Cr(Ⅲ)间接地测定抗坏血酸的含量。电泳缓冲液由0.02 mol/L HAc-NaAc (pH 4.7)和1×10-3 mol/L EDTA 溶液组成。对影响分离和检测的各参数都进行了优化实验。抗坏血酸检测限(3σ)为6×10-11 mol/L。该方法具有简单、灵敏度高、选择性好等特点,可用于血液中痕量抗坏血酸的测定。
建立瞭一種毛細管柱內反應毛細管區帶電泳分離化學髮光檢測痕量抗壞血痠的新方法。方法基于痠性重鉻痠鉀在毛細管柱內與抗壞血痠髮生氧化還原反應生成具有化學髮光催化活性的Cr(Ⅲ),通過毛細管電泳分離化學髮光法檢測 Cr(Ⅲ)間接地測定抗壞血痠的含量。電泳緩遲液由0.02 mol/L HAc-NaAc (pH 4.7)和1×10-3 mol/L EDTA 溶液組成。對影響分離和檢測的各參數都進行瞭優化實驗。抗壞血痠檢測限(3σ)為6×10-11 mol/L。該方法具有簡單、靈敏度高、選擇性好等特點,可用于血液中痕量抗壞血痠的測定。
건립료일충모세관주내반응모세관구대전영분리화학발광검측흔량항배혈산적신방법。방법기우산성중락산갑재모세관주내여항배혈산발생양화환원반응생성구유화학발광최화활성적Cr(Ⅲ),통과모세관전영분리화학발광법검측 Cr(Ⅲ)간접지측정항배혈산적함량。전영완충액유0.02 mol/L HAc-NaAc (pH 4.7)화1×10-3 mol/L EDTA 용액조성。대영향분리화검측적각삼수도진행료우화실험。항배혈산검측한(3σ)위6×10-11 mol/L。해방법구유간단、령민도고、선택성호등특점,가용우혈액중흔량항배혈산적측정。
A sensitive method for the determination of ascorbic acid based on the combination of e-lectrophoresis separation and chemiluminescence was developed.The method was based on the re-duction of Cr(Ⅵ)to Cr(Ⅲ)with ascorbic acid occurring inside the capillary and the light emis-sion produced by luminol oxidation by hydrogen peroxide in basic aqueous solution catalyzed by Cr(Ⅲ).Running buffer was composed of 0.02 mol/L HAc-NaAc (pH 4.7)with 1×10 -3 mol/L EDTA,and parameters affecting CE-CL separation and detection were optimized.The limit of de-tection for ascorbic acid (3σ)was 6 × 10-11 mol/L.This method offered potential advantages of simplicity,sensitivity,selectivity and applicability to the determination of ascorbic acid in blood samples.