摘要
以活性炭吸附大气中的吡啶,用二硫化碳解析、毛细管柱分离、FID检测器分析,采用保留时间定性、峰面积外标曲线法定量。方法在0～367mg/L范围内线性关系良好,当采样体积为20L时,最低检出质量浓度为0.007mg/m3,标准溶液平行测定的RSD≤2.0%,加标回收率为97.9%～104%。
The concentration of pyridine in air was absorbed by activated carbon, desorbed by carbon disulfide, separated capillary, and analyzed by FID. It was identified by the retention time, and quantified by external standard curve of peak area. T result showed that the linear range was from 0 mg/L to 367 mg/L. When sampling volume was 20 L, the minimum detection conent tration was 0. 007 mg/m^3, and the recoveries were from 97.9% to 104% （RSD≤2.0% ）.
出处
《环境监控与预警》
2012年第3期21-23,共3页
Environmental Monitoring and Forewarning
关键词
吡啶
活性炭
毛细管柱
气相色谱法
大气
Pyridine
activated carbon
capillary
gas chromatography
air
