梅州市多环芳烃的污染调查及生态风险评估

Investigation and ecological risk assessment of Polycyclic Aromatic Hydrocarbons in Meizhou

为了解梅州市多环芳烃的污染情况,在梅江河河流表层及周边污染源的设置了14个采样站点,根据气相色谱-质谱法对所采样品中16种优控PAHs的含量进行了调查,以探讨沉积物中PAHs的来源、含量和分布情况及潜在的生态风险.结果表明,14个采样站点中12个未检测出PAHs,2个采样站点检出16种优控PAHs中的7种PAHs,梅江干流及周边污染源表层沉积物PAHs整体风险水平为低生态风险,其来源主要是与生物燃烧源相关.

To investigate the pollution situation of PAHs in Meizhou,14 sampling sites were set up along the Meijiang River and the around the pollutiong source.This paper used gas chromatography-mass spectrometry(GC-MS)to detect the samples,in order to investigate the sources,content,distribution and potential ecological risk of Priority control PAHs in sediments.As the result shows that there were no PAHs in 12 sampled sites.Two sampled sites were detected seven PAHs.The pollutants may come from the industrial areas and domestic garbage nearby.Ecological risk assessment shows that the river does not have more serious ecological risks and biological toxic efiects.