摘要
研究了在酸性介质中，抗坏血酸对过氧化氢氧化次甲基蓝褪色反应具有显著的催化作用，建立了催化光度法测定痕量抗坏血酸的新方法。线性范围为０．７～３５μｇ·ｍＬ－１，检出的下限为２．４８×１０－９ｇ·ｍＬ－１。用于药品、尿液、饮料中抗坏血酸的测定。
In acidic medium, the catalytic action of
ascorbic acid on the oxidation of methylene blue by hydrogen peroxide was studied. A novel
catalytic spectrophotometry for the determination of trace ascorbic acid was established. The
linear range of ascorbic acid determination is 0.7-35 gmL-1. This limit of detection is 2.4810-9
gmL-1. This method has been used for the determination of trace ascorbic acid in medicaments,
human urine and drinks with satisfactory results.
出处
《化学世界》
CAS
CSCD
1999年第6期316-318,共3页
Chemical World
关键词
催化光度法
抗坏血酸
次甲基蓝
过氧化氢
测定
catalytic
spectrophotometryascorbic acidmethylene bluehydrogen peroxide
