|本期目录/Table of Contents|

[1]傅鹏,王飞,马秀平,等.沁河沉积物重金属垂直分布特征与风险评价[J].应用与环境生物学报,2013,19(02):305-312.[doi:10.3724/SP.J.1145.2013.00305]
 FU Peng,WANG Fei,MA Xiuping,et al.Vertical Distribution of Heavy Metals in Sediments of Qinhe River and Its Risk Assessment[J].Chinese Journal of Applied & Environmental Biology,2013,19(02):305-312.[doi:10.3724/SP.J.1145.2013.00305]
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沁河沉积物重金属垂直分布特征与风险评价()
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《应用与环境生物学报》[ISSN:1006-687X/CN:51-1482/Q]

卷:
19卷
期数:
2013年02期
页码:
305-312
栏目:
研究论文
出版日期:
2013-04-25

文章信息/Info

Title:
Vertical Distribution of Heavy Metals in Sediments of Qinhe River and Its Risk Assessment
作者:
傅鹏王飞马秀平王兰
(山西大学生命科学学院 太原 030006)
Author(s):
FU Peng WANG Fei MA Xiuping WANG Lan
(School of Life Sciences, Shanxi University, Taiyuan 030006, China)
关键词:
沁河沉积物重金属垂直分布风险评价
Keywords:
Qinhe River sediment heavy metal vertical distribution risk assessment
分类号:
X522 + X820.4
DOI:
10.3724/SP.J.1145.2013.00305
文献标志码:
A
摘要:
结合沁河环境参数对其所流经的5个县市22个采样点的垂直分布特征进行分析,采用Hakanson生态风险指数法和SQG(Sediment quality guidelines)法对其表层沉积物生态风险进行评价,并运用富集系数法探讨其主要来源. 垂直分布特征分析结果表明:沁河中下游可能曾经发生过铅(Pb)、铜(Cu)的污染,但逐渐得到了缓解;铬(Cr)、镉(Cd)在沁水县可能有一定的持续污染源. SQG分析表明:沁河沉积物中Cu、Zn、Cr呈现出中等生态毒性,可能会对该水域的生物产生一定影响;而沁水县Cd含量较高,对沁河水生生物有高毒性威胁. 以山西省土壤背景值作为参比,对沁河生态风险水平由强到弱的重金属依次为Cd>Pb>Cu>Zn>Cr>Mn,其中沁水县生态风险最强,结果与SQG分析一致. 富集系数法分析表明,河流中60%的样点呈现出重金属累积现象,Cd作为西大(S11)、卧虎庄(S13)点源污染物,固定的排污口可能是其主要来源. 图3 表7 参33
Abstract:
In order to investigate the heavy metal sediments of Qinhe River, we analyzed the vertical distribution pattern of 22 sampling points in 5 counties combined with the actual environment factors of Qinhe River. The environmental risk assessment was conducted by using sediment quality guidelines and potential ecological risk index. The underlying sources of heavy metals were analyzed by sediment enrichment factor. The results showed that the Pb and Cu pollution might have occurred in the middle and lower Qinhe River, and then gradually eased. In addition, continuous Cr and Cd pollution sources probably existed in Qinshui County. The SQG analysis indicated that Cu, Zn and Cr in Qinhe River were of moderate ecological toxicity, which might result in negative effects on biota of the watersheds. Moreover, high Cd content in Qinshui County had huge toxic threats to aquatic organisms. Compared with the soil background values of Shanxi, the potential ecological risk of heavy metals was as Cd>Pb>Cu>Zn>Cr>Mn, with the Qinshui County the most seriously polluted. The results were similar with that of SQG. According to the sediment enrichment factor, heavy metal enrichment was observed for more than 60% of sampling points. As the point source pollutants of S11 and S13, Cd might be mainly from the constant drain outlets. Fig 3, Tab 8, Ref 33

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备注/Memo

备注/Memo:
国家自然科学基金项目(30970361)资助
更新日期/Last Update: 2013-05-03