DETERMINATION OF ACRYLONITRILE IN SOLID WASTE BY AUTOMATIC HEADSPACE GAS CHROMATOGRAPHY

A method to determine the acrylonitrile in solid waste by automatic headspace gas chromatography was established． This method adopted the automatic headspace sampling，separated by DM-FFAP chromatographic column，and detected by FID detector． The conditions such as headspace balance time and equilibrium temperature were optimized． The linear range， detection limit，addition recovery rate，sensitivity and stability were tested． Under the conditions of 80 ℃ and balance time of 30 min，the detection limit of acrylonitrile was 1. 66 μg /kg，the relative standard deviation was under 5%，and the standard addition recovery was 92. 7% ～ 101. 5%． The results showed that this method is rapid，accurate and applicable，without consumption of organic solvents，less disturbance; its simple pretreatment can meet the requirements of Identification Standards for“Hazardous Wastes-Toxic Substance Content”( GB 5085. 6—2007) ．