高效液相色谱自动分析空气中痕量多环芳烃  

Automatic Analysis of Trace Polycyclic Aromatic Hydrocarbons in Ambient Air by High Performance Liquid Chromatography

作　　者：沈学优[1] 刘勇建[1] 沈红心[1] 朱利中[1] 

机构地区：[1]浙江大学环境科学系,杭州310028

出　　处：《应用化学》1999年第5期79-81,共3页Chinese Journal of Applied Chemistry

基　　金：浙江省科技计划项目

摘　　要：An automatic analytical method by HPLC for vapor and particle polycyclic aromatic hydrocarbons(PAHs) in ambient air is proposed. The PAHs were sampled simutaneously by a little volume and low noise sampling pump and extracted by a mixture of dichloromethane and methyl cyanide, concentrated by nitrogen sweeping, injected automatically and detected by a fluorometric detector with programmed excitation and emmission wavelength pairs. The mobile phase is a linear gradient mixture of methanol and water. The relative standard deviations of the retention time and peak height were 0 05%～0 39% and 0 68%～1 29%, respectively at PAHs concentration levels of 14 14～2360 0 μg/L with the linearly regressive factors being over 0 999. The detection limits were 5 30 ng/L for fluorene and 291 30 ng/L for fluoranthene.An automatic analytical method by HPLC for vapor and particle polycyclic aromatic hydrocarbons(PAHs) in ambient air is proposed. The PAHs were sampled simutaneously by a little volume and low noise sampling pump and extracted by a mixture of dichloromethane and methyl cyanide, concentrated by nitrogen sweeping, injected automatically and detected by a fluorometric detector with programmed excitation and emmission wavelength pairs. The mobile phase is a linear gradient mixture of methanol and water. The relative standard deviations of the retention time and peak height were 0 05%～0 39% and 0 68%～1 29%, respectively at PAHs concentration levels of 14 14～2360 0 μg/L with the linearly regressive factors being over 0 999. The detection limits were 5 30 ng/L for fluorene and 291 30 ng/L for fluoranthene.

关 键 词：多环芳烃 空气 PAHS 测定 大气监测 

分 类 号：X831.02[环境科学与工程—环境工程] X132