直接进样毛细管气相色谱测定空气中甲醛的研究  

STUDY ON THE METHOD FOR DETERMINATION OF FORMALDEHYDE IN THE AIR BY DIRECT INJEFCTION CAPILLARY GAS CHROMATOGRAPHY.

作　　者：范衍琼[1] 周韬[2] 李玉萍[1] 冯婉丽[1] 

机构地区：[1]江门市新会区疾病预防控制中心,江门529100 [2]江门市疾病预防控制中心

出　　处：《现代预防医学》2005年第7期779-780,共2页Modern Preventive Medicine

摘　　要：目的:建立直接进样毛细管气相色谱测定空气中甲醛的方法.方法:以吸收液采集空气中甲醛,直接进样FFAP毛细管柱分离,气相色谱(FID)测定.结果:甲醛的浓度在0～1.0μg/ml时,线性关系良好,回归方程y=48290.0x+37.5,(r=0.993,n=6),检测限为0.043/μg/ml;样品分析的精密度试验,相对标准偏差为2.6%～4.7%;样品分析的准确度试验,回收率为95.2%～104.3%.结论:本方法灵敏度高,适用于工作场所、公共场所及家庭居室空气中甲醛的浓度测定.Objective:To establish sampling and GC analytical method for formaldehyde in the air.Methods:Water solution absorption was used for sampling of formaldehyde and analysis was performed by direct injection capillary gas chromatography.Results:In the range of 0-1.0 μg/mL,regression formula was y=48290.0x+37.5,r=0.9993(n=6). Detection limit was 4.3×10 -2μg/ml (injection for 1μl),The relative standard deviation was 2.6%-4.7%. recovery rate was 95.2%-104.3%.Conclusion:The method is compatible with concentration detection of formaldehyde in the air .

关 键 词：甲醛 测定 气相色谱法 直接进样 

分 类 号：R122.1[医药卫生—环境卫生学]