黄河上游水体中重金属分布特征及重金属污染指数研究（英文）

发布时间：2018-06-11 13:38

本文选题：重金属 + 分布　；参考：《光谱学与光谱分析》2016年09期

【摘要】：为了研究黄河上游地区水体中重金属含量分布特征及评价该区域重金属污染水平,分别于2014年4月(枯水期)和10月(平水期),在12个采样点采集了24个黄河表层水样。由电感耦合等离子质谱仪ICPMS测量水样中As,Cd,Cr,Co,Cu,Mn,Ni,Pb和Zn的含量,并确定黄河上游水体中重金属分布特征和重金属污染指数。结果显示枯水期重金属的平均浓度顺序是:Cr(18.56μg·L~(-1))As(2.95μg·L~(-1))Ni(1.87μg·L~(-1))Mn(1.20μg·L~(-1))Cu(1.12μg·L~(-1))Zn(0.59μg·L~(-1))Pb(0.08μg·L~(-1))Cd(0.01μg·L~(-1)),平水期的重金属平均浓度顺序是:Mn(596.89μg·L~(-1))Zn(52.46μg·L~(-1))Cu(36.2711μg·L~(-1))Ni(25.11μg·L~(-1))Cr(23.19μg·L~(-1))Pb(19.51μg·L~(-1))As(7.30μg·L~(-1))Cd(0.37μg·L~(-1))。将重金属含量测定结果与中国和国际水质参考值以及同地区丰水期重金属含量数据进行了比较,结果显示Cr,Mn,Pb和Cu含量高于标准值。同时,用重金属污染指数(HPI)评估所有金属对整个水体的影响,结果表明各选点枯水期HPI值为6.46~11.95,平水期HPI为4.53~210.53。两个季节的重金属分布特征和HPI都显示了明显的季节性变化。研究结果表明黄河研究流域水体重金属含量及HPI均显示平水期重金属污染程度较枯水期高,可能与季节性生产及降水变化有关。研究结果可为相关部门制定环保政策提供可信的实验数据和理论依据。
[Abstract]:In order to study the distribution of heavy metals in the upper Yellow River and evaluate the pollution level of heavy metals in the upper Yellow River, 24 surface water samples of the Yellow River were collected from 12 sampling sites in April (dry season) and October (mean water period), respectively. The contents of Pb and Zn in water samples were measured by inductively coupled plasma mass spectrometer (ICPMS), and the distribution characteristics of heavy metals and the pollution index of heavy metals in the upper reaches of the Yellow River were determined. 缁撴灉鏄剧ず鏋按鏈熼噸閲戝睘鐨勫钩鍧囨祿搴﹂『搴忔槸:Cr(18.56渭g路L~(-1))As(2.95渭g路L~(-1))Ni(1.87渭g路L~(-1))Mn(1.20渭g路L~(-1))Cu(1.12渭g路L~(-1))Zn(0.59渭g路L~(-1))Pb(0.08渭g路L~(-1))Cd(0.01渭g路L~(-1)),骞虫按鏈熺殑閲嶉噾灞炲钩鍧囨祿搴﹂『搴忔槸:Mn(596.89渭g路L~(-1))Zn(52.46渭g路L~(-1))Cu(36.2711渭g路L~(-1))Ni(25.11渭g路L~(-1))Cr(23.19渭g路L~(-1))Pb(19.51渭g路L~(-1))As(7.30渭g路L~(-1))Cd(0.37渭g路L~(-1)). The results of heavy metal content determination are compared with the reference values of Chinese and international water quality and the heavy metal content data of the same region in the high water season. The results show that the contents of Cr _ (mn) Pb and Cu are higher than the standard values. At the same time, the heavy metal pollution index (HPI) was used to evaluate the effect of all metals on the whole water body. The results showed that the HPI value of each selected point was 6.46 ~ 11.95 in the dry season and 4.53 ~ 210.53 in the average water stage. The distribution characteristics of heavy metals and HPI in both seasons showed obvious seasonal variation. The results showed that the heavy metal content and HPI in the Yellow River basin showed that the pollution degree of heavy metals in the plain water period was higher than that in the dry season, which might be related to the seasonal production and the change of precipitation. The results can provide reliable experimental data and theoretical basis for relevant departments to formulate environmental protection policies.
【作者单位】：中央民族大学生命与环境科学学院;中国环境监测总站;中央民族大学北京市食品环境与健康工程技术研究中心;
【基金】：The National Natural Science Foundation of China(21177163) 111 Project B08044,First-class University First Class Academic Program of Minzu University of China(YLDX01013) Coordinate Development of First-Class and First-Class University Discipline Construction Funds(10301-0150200604) The Academic Team Construction Project of Minzu University of China(2015MDTD25C&13C) The Fundamental Research Funds for the Central Universities(2015,Ph.D)
【分类号】：X522

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