摘要
在稀硫酸溶液中,研究了甲醛对催化KClO3氧化丁基罗丹明B褪色及荧光猝灭的动力学条件,建立了测定痕量甲醛的动力学光度及荧光光度分析方法,方法线性范围分别为0.02～0.27μg/mL和0.01～2.45μg/mL,检出限分别为1.2×10-8g/mL和3.8×10-9g/mL。该法灵敏度较高,选择性较好,用于湖水、饮料和漆料中痕量甲醛的测定,结果令人满意。
A kinetic spectrophotometric and spectrofluorimetric method for the determination of trace formaldehyde has been proposed for formaldehyde can catalyze the decoloring reaction of KClO_(3) and butyl rhodamine B in sulfuric acid. The linear ranges are 0.02～0.27 μg/mL and 0.01～2.45 μg/mL and the detection limits are 1.2×10^(-8)g/mL and 3.8×10^(-9)g/mL, respectively. The procedure has been used to determine formaldehyde content in lake water, beverages and painting.
出处
《分析科学学报》
CAS
CSCD
北大核心
2004年第5期519-521,共3页
Journal of Analytical Science
关键词
催化反应
动力学光度法
荧光光度法
甲醛
丁基罗丹明B
Catalytical reaction
Kinetic spectrophotometery
Spectrofluorimetry
Formaldehyde
Butyl Rhodamine B
