%0 Journal Article
%T 宿州市新汴河重金属污染特征及其生态风险分析<br>Pollution Characteristics and Ecological Risk of Heavy Metals in Xinbian River of Suzhou
%A 姜晓庆
%A 彭位华
%A 余伶慧
%A 陈然
%A 刘佳利
%A 赵雪蓉
%A 孙文波
%J Journal of Water Resources Research
%P 416-425
%@ 2166-5982
%D 2021
%I Hans Publishing
%R 10.12677/JWRR.2021.104045
%X 为研究宿州新汴河水环境重金属污染特征及其生态风险，2019年12月至2020年11月期间对新汴河9个样点进行了连续采集分析。在测定六种重金属(As, Cd, Cu, Cr, Pb, Zn)的基础上，分别采用内梅罗综合污染指数和商值法对重金属污染水平及其生态危害风险进行评价。结果表明：新汴河六种重金属总体含量较低，含量依次为As (5.40 ± 3.65 μg/L) &gt; Zn (3.20 ± 1.74 μg/L) &gt; Cu (0.88 ± 0.75 μg/L) &gt; Cr (0.14 ± 0.07 μg/L) ≥ Pb (0.10 ± 0.08 μg/L) &gt; Cd (0.03 ± 0.03 μg/L)。与《地表水环境质量标准》(GB 3838-2002) III类水质限值相比，所测重金属含量均未超标，重金属平均污染情况均为安全风险水平；但与《生活饮用水卫生标准》(GB 5749-2006)相比，As超标占比8.3%；风险商值(RQ)计算结果表明：六种重金属RQ由大到小依次为：Cu (0.419 ± 0.357) &gt; As (0.106 ± 0.072) &gt; Zn (0.101 ± 0.055) &gt; Cr (0.061 ± 0.033) &gt; Pb (0.008 ± 0.007) &gt; Cd (0.004 ± 0.004)，其中Cu、As和Zn的RQ均值为中度生态风险(RQ &gt; 0.1)，RQ超过0.1的占比分别为98.1%、43.5%和46.3%。鉴于Cu的RQ在8月达到峰值(0.941)，其在夏季的生态风险更应引起重视。<br />
To study the pollution characteristics of heavy metals and their ecological risk in Xinbian River of Suzhou city, nine samples were collected and analyzed continuously from December 2019 to November 2020. Based on the measurement of six heavy metals (As, Cd, Cu, Cr, Pb and Zn), the Nemerow comprehensive pollution index and the quotient method were used to evaluate the pollution level and ecological hazard risk of heavy metals, respectively. The results show that the total contents of six heavy metals in Xinbian River are low, and the contents are As (5.40 ± 3.65 μg/L) &gt; Zn (3.20 ± 1.74 μg/L) &gt; Cu (0.88 ± 0.75 μg/L) &gt; Cr (0.14 ± 0.07 μg/L) ≥ Pb (0.10 ± 0.08 μg/L) &gt; Cd (0.03 ± 0.03 mu g/L). Compared with Class III level of the Environmental Quality Standard for Surface Water (GB 3838-2002), the content of the selected heavy metals do not exceed the standard, and the average pollution of heavy metals is at safety risk level. However, when compared with the Standard for Drinking Water Quality (GB 5749-2006), the exceeding proportion of As is 8.3%. The results of risk quotient value (RQ) showed that the RQ of the six heavy metals from the largest to the smallest is: Cu (0.419 ± 0.357) &gt; As (0.106 ± 0.072) &gt; Zn (0.101 ± 0.055) &gt; Cr (0.061 ± 0.033) &gt; Pb (0.008 ± 0.007) &gt; Cd (0.004 ± 0.004). The mean RQ of Cu, As and Zn belong to the medium ecological risk level (RQ &gt; 0.1), and the RQ &gt; 0.1 proportion of these there heavy metals accounted for 98.1%, 43.5% and 46.3%, respectively. Since the RQ of Cu reaches its peak in August (0.941), the ecological risk of Cu should be paid more attention in summer.
%K 重金属，生态风险评价，内梅罗污染指数，商值法，新汴河<br>Heavy Metals
%K Ecological Risk Assessment
%K Nemerow Pollution Index
%K Quotient Value Method
%K Xinbian River
%U http://www.hanspub.org/journal/PaperInformation.aspx?PaperID=45141