顶空进样气质联用法测定涂料中12种卤代烃和苯系物

Determination of Halohydrocarbons and Benzoid Compounds in Paints by Headspace Gas Chromatography-Mass Spectrometry

采用顶空进样气质联用法测定涂料中 1 2种卤代烃和苯系物 ,选用硅油作母液制备一系列标准样品 ,对采样温度、平衡时间以及色谱条件进行了讨论。方法也适用于溶剂型涂料和水性涂料。操作简单 ,定性定量准确可靠 ,线性范围为 1～1 0 0 0mg L,最低检测浓度为 0 .0 5～ 0 .1mg L,方法回收率为 73 .4 %～ 1 1 3 .3 % ,相对标准偏差为 2 .2 7%～ 8.69% ,并对实际样品进行了测定 。

Twelve halohydrocarbons and benzoid compounds in paints were analysed by headspace gas chromatography-mass spectrometry. Silicone oil was selected as a blank solvent for making a series of standard samples. Sampling temperature,equilibrium time and. chromatographic condition were discussed.-The method was simple, rapid and practical. It ban be used for solvent soluble coatings and water soluble coatings. Qualification and quantification results were reliable. The detection limit, recovery and RSD were 0.05 similar to 0.1 mg/L, 73.4% similar to 113.3% find 2.3% similar to 8.7%, respectively. Several real saimple's were determined by the method and the results were satisfactory.