摘要
为初步了解兰州市大气降尘中有机物的污染特征,采集了兰州市的大气降尘样品,分析了其中的16种多环芳烃和16种多氯联苯。结果表明,兰州市大气降尘中16种多环芳烃的总量为28.9 mg/kg,主要浓度组分为苊、苊烯、茚并[1,2,3-CD]芘和苯并[a]芘;16种多氯联苯的总量为172μg/kg,主要组分为PCB_(169)和PCB_(138)。生态风险评价的结果表明,兰州市22.2%的大气降尘样品多环芳烃总量处于低风险,66.7%的样品处于中等风险,多氯联苯总量以中等风险和高风险为主。
In order to preliminarily investigate the pollution characteristics of organic pollutants,dustfall samples were collected in Lanzhou city,16 kinds of polycyclic aromatic hydrocarbons and 16 kinds of polychlorinated biphenyls were analysed.The results showed that the content of 16 kinds of PAHs in dustfall samples of Lanzhou city was 28.9 mg/kg,whose major components were acenaphthene,acenaphthylene,Indeno[1,2,3-cd]pyrene and benzo[a]pyrene;16 kinds of PCBs was 172μg/kg,the main components were PCB169 and PCB138.Ecological risk assessment results showed that 22.2%of the total PAHs in dustfall of Lanzhou city were at low risk,66.7%were at a moderate risk,the total PCBs were mainly at medium and high risk level.
作者
丁海霞
陶雪梅
李丹丹
Ding Haixia;Tao Xuemei;Li Dandan(Gansu Province Environmental Monitoring Center,Lanzhou 730020,China)
出处
《环境研究与监测》
2018年第1期1-4,共4页
Environmental Research and Monitoring
基金
甘肃省环境保护厅科研课题(GSEP-2015-10)
