GC-MS法测定垃圾填埋场渗滤液中的有机污染物

采用GC-MS联用技术对深圳市两个垃圾填埋场（A和B）渗滤液中的有机污染物进行分析。垃圾场A是简易生活垃圾填埋场，垃圾场B是生活垃圾焚烧底渣填埋场。垃圾场A渗滤液中COD、TOC、NH3-N、NO3^--N等污染指标的浓度比垃圾场B渗滤液高一个数量级。两个垃圾填埋场渗滤液中分别检测出主要有机物72种和57种，其中含有大量难降解有机物，如酚类、胺类、杂环类物质。两个垃圾填埋场渗滤液中有机物组分的相对含量不同，渗滤液A中酚类物质含量最高，渗滤液B中有机物多为长链烷烃。

Determination of Organic Pollutants in Leachates from Two Municipal Landfills by GC-MS

The organic pollutants in leachates from two municipal landfills(A and B) were determined by GC-MS.Landfill A is a simple municipal solid waste landfill,and landfill B is mainly disposed of bottom ashes from a MSW incineration plant.The leachate of landfill A has nearly one order of magnitude higher concentrations of COD,TOC,NH3-N,NO-3-N than those of landfill B.72 and 57 kinds of main organic pollutants were identified in leachates from landfill A and B, respectively.Among the organic chemicals,organic compounds which are difficultly degraded,including phenols,aliphatic amides and heterocylic compounds were determined.The relative distributions of chemical groups of substances in leachates of landfills A and B are different.The leachate of landfill A has organic components dominated by phenols,while the principal chemicals are long-chain alkanes in leachate B.