摘要
建立了用离子色谱法测定空气中甲醛的方法。空气中甲醛活性炭吸附，过氧化氢氧化甲酸、微波提取，阴离子分离柱分离，直接进样分析，时间定性，峰高定量，其甲醛回收率为92．3％～105．5％，在采样体积为48L的条件下，甲醛最低检出质量浓度为0．005mg／m^3。本方法前处理简便，分离度好干扰少，分析灵敏度高，化学试剂使用量少，满足环境分析要求。
The establishment of an ion chromatographic method for the determination of formaldehyde in air by the method of. Formalde- hyde in air by activated carbon adsorption, hydrogen peroxide oxidation of formic acid, microwave extraction, anion separation column sepa- ration, sample analysis, the qualitative time, peak height quantitative, its formaldehyde recovery rate was 92.3% - 105.5% , the sampling volume 48L conditions, formaldehyde minimum detectable mass concentration of O. 005mg/m3. This method is easy pretreatment, separation of good little interference, high analysis sensitivity, chemical reagents used less, to meet the demands of environmental analysis.
出处
《环境与发展》
2013年第7期159-160,共2页
Environment & Development
关键词
室内空气
甲醛
甲酸
离子色谱法
Indoor air
Formaldehyde
Formic acid
Ion chromatography
