永定河怀来段沉积物营养元素分布特征及评价  

Distribution Characteristics and Evaluation of Nutrient Elements in Sediments of Huailai Section of Yongding River

作　　者：刘晶 赵建国 姜甜甜 李洪波 田在锋 Liu Jing;Zhao Jianguo;Jiang Tiantian;Li Hongbo;Tian Zaifeng(Research Institute of Green Development,Hebei Academy of Ecological and Environmental Sciences,Shijiazhuang Hebei 050000,China;Institute of Water Environmental Sciences,Hebei Academy of Ecological and Environmental Sciences,Shijiazhuang Hebei 050000,China)

机构地区：[1]河北省生态环境科学研究院绿色发展研究所,河北石家庄050000 [2]河北省生态环境科学研究院水环境科学研究所,河北石家庄050000

出　　处：《河北环境工程学院学报》2020年第3期76-81,共6页Journal of Hebei University of Environmental Engineering

基　　金：国家水体污染控制与治理科技重大专项《海河北系永定河-洋河段水污染控制与水质改善技术集成与综合示范》(2015ZX07203-005)。

摘　　要：为了解永定河怀来段沉积物环境现状,对永定河怀来段14个采样点的沉积物中总氮(TN)、总磷(TN)、总有机碳(TOC)进行测定,用有机氮和有机指数进行有机污染评价,用内梅罗污染指数进行生态风险评价。结果表明,永定河怀来段沉积物TP、TN和TOC含量平均值分别为206.40 mg/kg、525.59 mg/kg和1135.70 mg/kg;有机氮平均值为0.050%,有机指数平均值为0.0068,两者空间变化特征相似;内罗梅污染指数范围是0.342~1.181,部分为轻度污染,TN的生态风险较高,TOC、TP的风险较低。In order to understand the current situation of sediment environment in Huailai section of Yongding River,TN,TN and TOC in 14 sampling points of Huailai section of Yongding River were measured,organic pollution was evaluated by organic nitrogen and organic index,and ecological risk was evaluated by Nemero pollution index.The results show that the average values of TP,TN and TOC in the sediments of Huailai section of Yongding River were 206.40 mg/kg,525.59 mg/kg and 1135.70 mg/kg,respectively.The average values of organic nitrogen and organic index are 0.050%and 0.0068,respectively.The spatial variation characteristics of the two are similar.The pollution index range of neiromei is 0.342〜1.181,some of which are light pollution,the ecological risk of TN is higher,and the risk of TOC and TP is lower.

关 键 词：永定河怀来段 表层沉积物 有机污染评价 生态风险评价 

分 类 号：X824[环境科学与工程—环境工程]