PAHs Contamination in Surface Sediments from Lake Hongfeng, China
Polycyclic aromatic hydrocarbons(PAHs)are potentially carcinogenic and mutagenic compounds that have raised considerable environmental concelTIS.In the present research,sixteen PAH compounds in ten sediment samples collected from Lake Hongfeng,one of the five drinking water sources for Guiyang City,were estimated based on gas chromatography-mass spectrometry(GC-MS)method. The results indicated that the total amount of PAHs ranged from 656.8 to 4860.9 μg/kg with the mean concentration of 2520.7 μg/kg in sediments from Lake Hongfeng,and naphthalene was the dominant PAH compound and its concentrations ranged from 1 08.9 to 4370.3 μg/kg with the mean concentration of 1 987.4 gg/kg.Both principal component analysis(PCA)and correlation study suggested that the distribution characteristics of PAH compounds in sediments from the lake were affected by three potential factors. One factor should be their physicochemical properties,such as their molecular weight and number of rings. The other two probably are associated with their origin(point and non-point pollution sources).In addition.the analysis of PAH composition demonstrated that the PAHs in the sediments were mainly from pyrolytic origins.
Huang X F Peng Q C Hu J W Yang Z N Li C X Tian L F Teng M D
Guizhou Provincial Key Laboratory for Information System of Mountainous Areas and Protection of Ecological Environment.Guizhou Normal University,Guiyang 550001.P.R.China
国际会议
北京
英文
1-6
2009-08-24（万方平台首次上网日期，不代表论文的发表时间）