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报道了应用SPME GC MS法测定海水中的邻苯二甲酸酯 (PEs)及其与赤潮的关系 .详细研究了萃取头性质、萃取平衡时间、萃取温度、搅拌速度、介质离子强度等条件对萃取效率的影响 .该方法简便、快速、灵敏度高 ,不使用有毒有机溶剂 ,检测限为 0 0 0 5μg/L ,RSD介于 4 3%～ 7 5% ,回收率范围为 88 0 %～ 95 3% .该方法应用于海水样品的测定发现 ,赤潮海水中PEs 的浓度是非赤潮海水的 4～ 10倍 ,PEs 可能作为赤潮特征有机物之一 ,通过对海水中PEs 浓度变化的监测 ,可能对赤潮的预报和防治提供一种依据 .
This paper reports the determination of phthalates (PEs) in seawater by SPME GC-MS method and their relationship with red tide.The conditions of extraction head, extraction time, extraction temperature, stirring speed and ionic strength were studied in detail The method has the advantages of simple, rapid and high sensitivity, without using toxic organic solvents, the detection limit is 0 0 0 5μg / L, RSD is 43% ~ 75%, and the recovery range is 88 0% ~ 95 3% .This method was applied to the determination of seawater samples and found that the concentration of PEs in red tide seawater is 4 ~ 10 times that of non-red tide seawater. PEs may be one of the organic compounds with red tide. By monitoring the concentration of PEs in seawater, Provide a basis for forecasting and prevention.