期刊论文

中文

分析科学学报

1006-6144

2006

22

5

582-584

10.3969/j.issn.1006-6144.2006.05.024

本校为第一机构

在硫酸介质中,甲醛能催化溴酸钾氧化藏红T的反应,使其荧光猝灭,据此建立了催化动力学荧光分析法测定甲醛的新方法.研究了催化反应的性能,优化了方法的实验条件.方法的线性范围为0.025～0.25μg/mL,检出限4.19×10-5μg/mL.该方法简便快速,常见共存物质干扰小,已用于环境水样及家居空气中痕量甲醛的测定,结果满意.

A catalytic spectrofluorimetric method was proposed for the determination of trace formaldehyde. It was based on the catalytic effect of formaldehyde on the oxidation of Safranine T by potassium bromate in sulphuric acid medium. The linear range of the determination was 0. 025-0.25μg/mL and the detection limit was 4.19× 10^-5μg/mL. The method is quick and simple . There was little interference with common organic substances. The method was applied to the determination of trace formaldehyde in water sample...