| 引用本文: | 王树涛,丁晶,尤宏,李一凡.松花江干流底泥中PCBs的分布特征及其生态风险[J].哈尔滨工业大学学报,2010,42(6):986.DOI:10.11918/j.issn.0367-6234.2010.06.034 |
| WANG Shu-tao,DING Jing,YOU Hong,LI Yi-fan.Distribution and ecological risk assessment of sediment PCBs in Songhua River[J].Journal of Harbin Institute of Technology,2010,42(6):986.DOI:10.11918/j.issn.0367-6234.2010.06.034 |
|
| 摘要: |
| 分析了松花江干流沉积物中14个采样点的∑PCBs质量分数及其季节变化规律.共检出57种PCBs同系物,不同季节检出的∑PCBs的质量分数为1.0×10-10～1.15×10-8,平均质量分数为1.91×10-9.不同季节中,大多数采样点的∑PCBs质量分数变化不大.应用潜在生态危害指数法和加拿大环境委员会制定的SQG风险评价法,对各采样点的生态风险进行了评价,两种评价方法的结果一致.各采样点生态风险均未达到"强生态危害"及其以上级别.松原采样点的春季属于"中等生态危害";其他各采样点在各季节均属于"轻微生态危害".春季5个风险水平较高的采样点的风险水平由高到底依次是:松原>佳木斯下游>富锦市>哈尔滨下游>哈尔滨上游. |
| 关键词: 底泥 多氯联苯(PCBs) 生态风险 |
| DOI：10.11918/j.issn.0367-6234.2010.06.034 |
| 分类号:X52;X820.4 |
| 基金项目:城市水资源与水环境国家重点实验室自主课题研究项目(2008DX01);城市水资源与水环境国家重点实验室开放研究项目(QA200812);中国博士后科学基金(20090450985) |
|
| Distribution and ecological risk assessment of sediment PCBs in Songhua River |
|
WANG Shu-tao1, DING Jing2, YOU Hong1, LI Yi-fan1
|
|
1.State Key Laboratory of Urban Water Resource and Environment,Harbin Institute of Technology,Harbin 150090,China;2.National Engineering Research Center of Urban Water Resources,Harbin Institute of Technology, Harbin 150090,China
|
| Abstract: |
| In this study,the concentrations and seasonal changes of sediment PCBs from 14 site points were characterized. 57 PCBs homologs were detected totally. The concentrations of ∑PCBs ranged from 1. 0 × 10-10 to 1. 15 × 10-8 and the average percentage was 1. 91 × 10-9,which showed a little seasonal changes. The ecological risk assessment was carried out and the same risk results were obtained with two methods: Hakanson ecological risk index and Canadian sediment quality guidelines (SQG). It is found that the ecological risk ranks in all target sites are all below the high ecological hazard. The risk value of Songyuan belongs to the middle ecological hazard in spring and the risk of the rest of the target sites belongs to the light ecological hazard in different seasons. The order of the top five risk sites is as follows: Songyuan > downriver Jiamusi > Fujin > downriver Harbin > upriver Harbin. |
| Key words: sediment PCBs ecological risk |
