色谱-质谱联机测定厦门港和员当湖表层沉积物中的石油烃和多环芳香烃的含量

Concentrations of of petroleum hydrocarbons (PHCS) and polycyclic aromatic hydrocarbons (PAHs) in the surficial seditrients along Xiamen harbour and Yuandang lake in China by GC - MS

2002年4月厦门港沿岸设九个站,员当湖设两个站采集表层积物,用有机溶剂萃取,硅胶柱色层分离,气相色谱-质谱联机带SIM数据采集系统对样品的石油烃类(M/Z=55),多环芳香烃类(15个典型的多环芳香烃,9个甲基化多环芳香烃作外标)进行分析,结果显示员当湖石油烃和多环芳香浓度分别高达1397微克/克(干)和1376.5纳克/克(干)。厦门港沉积物石油烃和多环芳香浓度范围为:石油烃133.3～943.3微克/克(干)多环芳香烃97.6～308.5纳克/克(干)。厦门港船只活动,厦门港四周工业废水、车辆燃油滴漏是石油烃污染的主要来源。厦门工业用煤、用油、生活用煤及船只、车辆燃料泄漏是沉积物多环芳香烃的主要来源,其工业排废、生活废水排放,市区雨水冲刷和大气灰尘沉降是多环芳香烃进入海湾的主要途径。

There were nine sampling stations along Xiamen Harbour and two sampling stations in Yuan Dan Lake were set up for surficial sediment sampling during April 2002. Samples were extracted by Gas Chromatography-Mass Spectrum DetectorCGC - MSD)with Selected Ion Monitoring (SIM) at M/Z-57 for PRCs andd individual M/ Z for each 15 typical PAHs and 9 alkylqted PAHs. The results showed that concentrations of PHCs and PAHs in the sediments of Yuan Dan Lake were 1397 ug/g(d) and 1376. 5ng/g(d) respectively. The rauges for PHCs and PAHs in the sediments from Xiamen Harbour Were 133- 3-943. 3ug/g(d) and 97. 6-308. 5ng/g(d) respectively, increasing shipping activity. Industrial wastewater effluence, fuel oil spillage from ships and vehicles were main sources of oil pollutants including PAHs at this harbour. And coal usage for industry and families were second sources of PAHs in these sediments. Industrial waste discharge, living waste discharge, urban runoff, and particle deposit from urban air were the several main transportation ways for PHCs and PAHs to the harbour and the lake.