摘要
在酸性介质中，高锰酸钾氧化白藜芦醇产生微弱的化学发光，甲醛对此体系有增敏作用，据此建立了一种化学发光测定白藜芦醇的新体系．在优化的实验条件下，白藜芦醇的浓度在0．005～1．000μg／mL范围内与发光强度呈良好的线性关系，方法的检测限为1．0ng/mL．对浓度为0．1μg／nL的白藜芦醇连续进样11次，其RSD：0．76％．将本方法用于红葡萄酒中自藜芦醇的测定并做同收率实验，回收率为81％～116％．同时，在基于化学发光和紫外的基础上，对可能的机理进行了探讨．
A new chemiluminescent method was proposed for the determination of resveratrol, which was based on enhancement effect of formaldehyde on the weak chemiluminescence produced by the potassium permanganate oxidation on resveratml in acidic media. In optimum conditions, the proposed method allowed the determination of resveratml in the range 0.005 - 0. 100 μg/mL, with a detection limit of 1.0 ng/mL. The relative standard deviation （RSD） was 0.76% （ n = 11） for 0.5 μg/mL resveratml and the method has been applied, with satisfactory results to determine resvemtrol in various dry red wines. On the basis of investigations of chemiluminescent and ultraviolet spetm of resvemtml in acidic so- lution containing potassium permanganate and formaldehyde, a possible mechanism for this reaction was proposed.
出处
《江西师范大学学报（自然科学版）》
CAS
北大核心
2008年第6期662-666,共5页
Journal of Jiangxi Normal University(Natural Science Edition)
关键词
化学发光
白藜芦醇
高锰酸钾
甲醛
chemiluminescence
resveratrol
potassium permanganate
formaldehyde
