日照市海滩表层沉积物重金属污染评价及磁学指示

王晓宇, 王永红. 日照市海滩表层沉积物重金属污染评价及磁学指示[J]. 海洋地质前沿, 2022, 38(7): 63-74. doi: 10.16028/j.1009-2722.2021.038
引用本文: 王晓宇, 王永红. 日照市海滩表层沉积物重金属污染评价及磁学指示[J]. 海洋地质前沿, 2022, 38(7): 63-74. doi: 10.16028/j.1009-2722.2021.038
WANG Xiaoyu, WANG Yonghong. Evaluation of heavy metal pollution and their magnetic indicators in beach surface sediments in Rizhao City[J]. Marine Geology Frontiers, 2022, 38(7): 63-74. doi: 10.16028/j.1009-2722.2021.038
Citation: WANG Xiaoyu, WANG Yonghong. Evaluation of heavy metal pollution and their magnetic indicators in beach surface sediments in Rizhao City[J]. Marine Geology Frontiers, 2022, 38(7): 63-74. doi: 10.16028/j.1009-2722.2021.038

日照市海滩表层沉积物重金属污染评价及磁学指示

  • 基金项目: 国家重点研发计划“珠江河口与河网演变机制及治理研究”课题“基于长序列及多要素原型观测的水沙异变研究”子课题(2016YFC0402602);国家自然科学基金“基于模糊聚类方法的黄渤海表层沉积物物源和输移路径的磁性诊断”(41376054),“中国东部陆架海泥质区菌生磁铁矿的形成及环境控制因素研究”(41176039)
详细信息
    作者简介: 王晓宇(1993—),男,硕士,主要从事海洋沉积学方面的研究工作. E-mail:511612315@qq.com
    通讯作者: 王永红(1969—),女,博士,教授,主要从事海洋地质和环境方面的研究工作. E-mail:yonghongw@ouc.edu.cn
  • 中图分类号: P736.4;X55

Evaluation of heavy metal pollution and their magnetic indicators in beach surface sediments in Rizhao City

More Information
  • 研究区域为山东省南部日照市涛雒镇海滩,对其表层沉积物中7种重金属元素(Cr、Ni、V、Fe、Zn、Co、Pb)的含量进行测试,并使用地累积指数法对其污染状况进行了评估;同时对表层沉积物的磁学参数进行原位磁化率和室内磁学参数测试。结果表明,研究区域整体污染情况较轻,各重金属元素均轻度污染或无污染,重金属污染源主要为河口及海滩排污口。野外体积磁化率和室内质量磁化率分布特征与重金属含量分布特征一致,磁性颗粒的晶粒类型为多畴(MD),磁性矿物类型为亚铁磁性矿物。通过室内质量磁化率与重金属含量的高度正相关性,建立了研究区域重金属污染的磁学诊断方法。

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  • 图 1  研究区位置及测量取样点位图

    Figure 1. 

    图 2  磁化率等值线分布图

    Figure 2. 

    图 3  不同粒径范围的磁学参数分布情况

    Figure 3. 

    图 4  镜下观察不同粒径组分的磁性矿物浓度

    Figure 4. 

    图 5  0.063~0.125 mm粒径范围内重金属污染分布情况

    Figure 5. 

    图 6  $ \chi $与重金属地累积指数的线性拟合

    Figure 6. 

    表 1  重金属污染程度分级

    Table 1.  Heavy metal pollution degree classification

    范围污染程度
    无污染
    轻度污染
    偏中度污染
    中度污染
    偏重污染
    重污染
    严重污染
    下载: 导出CSV

    表 2  重金属污染评价背景值

    Table 2.  Background value for heavy metal pollution evaluation

    重金属名称CrNiVFeZnCoPb
    背景值/(μg/g)57.124.374.72912064.612.126.8
    下载: 导出CSV

    表 3  涛雒镇海滩表层沉积物重金属含量

    Table 3.  Heavy metal contents in surface sediments of Taoluo Beach

     点位重金属含量/(μg/g)
    CrNiVFeZnCoPb
    日照涛雒镇海滩 P1-2 92 36 118 39501 88 15.5 26
    P1-4 95 38 127 41339 90 14.7 27
    P2-2 90 34 105 37574 87 14.7 25
    P2-5 90 35 107 37795 86 14.7 25
    P3-1 102 46 154 48817 94 18.2 33
    P3-5 90 35 109 38187 90 14.3 26
    P4-1 120 62 195 67327 103 19.3 46
    P4-4 89 35 113 38755 88 15.9 26
    P5-1 112 55 187 57567 100 20.9 42
    P5-4 94 38 121 41024 90 17.9 27
    平均值 97 41 134 44789 91 16.6 30
    评价标准 一类标准 80 - - - 150 - 60
    二类标准 150 - - - 350 - 130
    下载: 导出CSV

    表 4  重金属含量Pearson相关性分析

    Table 4.  Pearson correlation analysis for heavy metal content

    CrNiVFeZnCoPb
    Cr1
    Ni0.99**1
    V0.98**0.98**1
    Fe0.99**0.99**0.97**1
    Zn0.98**0.98**0.98**0.98**1
    Co0.84**0.86**0.88**0.83**0.85**1
    Pb0.99**0.99**0.97**0.99**0.98**0.83**1
    注:** p<0.01, n=10。
    下载: 导出CSV

    表 5  取样点地累积指数

    Table 5.  Geoaccumulation index of the sampling point

    点位地累积指数(
    CrNiVFeZnCoPb
    P1-2 −0.1 −0.1 0.0 −0.3 −0.1 −0.2 −0.6
    P1-4 0.0 0.0 0.2 −0.2 −0.1 −0.3 −0.6
    P2-2 −0.1 −0.2 −0.1 −0.4 −0.1 −0.3 −0.7
    P2-5 −0.1 −0.2 −0.1 −0.4 −0.1 −0.3 −0.7
    P3-1 0.1 0.2 0.4 0.0 0.0 0.0 −0.3
    P3-5 −0.1 −0.2 −0.1 −0.4 −0.1 −0.3 −0.6
    P4-1 0.3 0.7 0.8 0.5 0.1 0.1 0.2
    P4-4 −0.1 −0.2 0.0 −0.3 −0.1 −0.2 −0.6
    P5-1 0.2 0.5 0.7 0.2 0.1 0.2 0.1
    P5-4 0.0 0.0 0.1 −0.3 −0.1 0.0 −0.6
    平均值 0.0 0.1 0.2 −0.2 0.0 −0.1 −0.4
    下载: 导出CSV

    表 6  研究区与其他地区海滩重金属含量的比较

    Table 6.  Comparison of heavy metal contents the study area and other beaches

    μg/g
    海滩名称重金属平均含量
    CrNiVFeZnCoPb
    本次研究涛雒镇海滩974213445 142921631
    其他地区石老人海滩(夏季)[14](中国青岛)6915-50 00041-34
    石老人海滩(冬季)[14](中国青岛)11721-76 00064-43
    Huatulco[5](墨西哥)15012-82 296291311
    Al-Khobar[6](沙特阿拉伯)5175-7 5525355
    Sodwana Bay[7](南非)42615-7 784371
    Lutong[8](马来西亚)85--1 888181313
    Bahia Solano[9](哥伦比亚)269-14330 964126109410
    Stratoni-lerrssos Gulf[10](希腊)----1 863-1146
    Sulcis-Iglesiente[11](意大利)6---3 272-203
    下载: 导出CSV

    表 7  磁学参数与重金属含量的相关性

    Table 7.  Correlation between magnetic parameters and heavy metal content

     CrFeNiVZnCoPb
    0.99**0.99**0.96**0.99**0.97**0.80**0.99**
    0.93**0.94**0.97**0.92**0.95**0.90**0.92**
    SIRM0.98**0.98**0.95**0.99**0.97**0.78**0.99**
    −0.03−0.02−0.13−0.01−0.09−0.110
    S−100−0.47−0.48−0.57−0.43−0.48−0.64*−0.44
    S−3000.180.140.120.160.19−0.050.16
    注:* p<0.05,** p<0.01;样本数n=10。
    下载: 导出CSV

    表 8  $ \mathrm{\chi } $与重金属地累积指数的线性拟合

    Table 8.  Linear fitting between $ \mathrm{\chi } $ and heavy metal geoaccumulation index

    线性拟合方程R2
    Igeo(Cr) = (−2596.7) / 302900.96
    Igeo(Ni) = (−2202.9) / 147710.96
    Igeo(V) = (−465.5) / 132070.89
    Igeo(Fe) = (−5425.2) / 156760.98
    Igeo(Zn) = (−5434) / 511630.93
    Igeo(Co) = (−5444.1) / 190310.63
    Igeo(Pb) = (−9210.3) / 139900.96
    下载: 导出CSV
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收稿日期:  2021-02-19
录用日期:  2022-05-17
刊出日期:  2022-07-28

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