气相色谱-质谱联用(GC-MS)技术解析红树林油状污染物成分及来源

随着现代化工业以及城市发展步伐的不断加快,海洋生态环境保护意识的缺乏以及人为干扰等问题,产生了一些对红树林湿地的面积及生态环境的影响,如水体富营养化的破坏.本文采用酸催化法、碱催化法和BF3催化法进行甲酯化方法筛选,选取最优甲酯化法对海南红树林湿地保护公园(海南澄迈)内8个采样地点的水体样品的有机溶剂提取物进行甲酯化衍...

Analysis of Components and Sources of Oil Pollutants in Mangrove Wetland Park by GC-MS

This study was conducted to investigate the chemical compositions of the oil pollutants in mangrove wetland park(Chengmai,Hainan Province)in order to protect mangrove ecological environment.The lard was methyl-esterified by acid catalyst,alkali catalyst and BF3 catalyst.The optimal methyl esterification method was used to pretreat the oil pollutants on the water surface collected from eight sampling sites in wetland parks.Their compositions were studied by gas chromatography-mass(GC-MS).The relative content was quantified by the peak area normalization method.Our results demonstrated that the main components of oil pollutants were hydrocarbons(over 70%),in which n-alkanes were the dominant,and the carbon number distribution range was C10~C33.The normal paraffin distribution was a low-carbon chain mainly composed of nC17 and L/H range was 1.51~2.19,which indicatingthe pollution sources were mainly derived from plankton and algae input.