摘要：

基于在碱性介质中,没食子酸-过氧化氢-甲醛体系的化学发光，建立了流动注射-化学发光快速测定水溶液中甲醛的方法。该法的线性范围为1.0×10^-6～7×10^-4g/mL，该法的检出限为2×10^-7g/mL。10次平行测定甲醛的相对标准偏差为2.1%。该法用于自来水中甲醛的加标回收，结果满意。

关键词: 化学发光, 流动注射, 测试, 甲醛

Abstract:

Based on the gallic acid-CH₂O-H₂O₂-OH-chemiluminescence system,a rapid method for the determination of trace formaldehyde in aqueous solution is developed. Under optimal conditions, the linear range for the determination of formaldehyde is 1.0×10^-6～ 7×10^-4g/mL. The detection limit is 2×10^-7g/mL. The relative standard deviations for 5×10^-5g/mL formaldehyde (n=10) is 2.1%.

Key words: chemilumine scence, flow injection, determination, formal dehyde

中图分类号: 

• O657.3