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首页> 外文期刊>Journal of Asian earth sciences >Characteristics of coastal aquifer contamination by seawater intrusion and anthropogenic activities in the coastal areas of the Bohai Sea, eastern China
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Characteristics of coastal aquifer contamination by seawater intrusion and anthropogenic activities in the coastal areas of the Bohai Sea, eastern China

机译：中国东部渤海沿海地区海水入侵与人为活动的沿海含水层污染特征

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摘要

A comprehensive study was performed to identify the origins of salinity and the geochemical processes governing hydrochemistry, and to distinguish the role of evaporation, mixing, and water-rock interaction from seawater intrusion (SWI) or palaeo-saltwater intrusion (PSWI) on groundwater chemistry in the coastal aquifer around the Bohai sea in China. For these purpose, geochemical and multivariate statistical methods were applied. The results indicated that the intrusion area around the Bohai sea can be divided into: (i) the palaeo-saltwater intrusion zone (including the south of Laizhou Bay, Tianjin, and Panjin on the north of Liaodong Bay), and (ii) the modern seawater intrusion zone. The analysis of selected ions (Na+/Cl- and Br-/Cl- ) and isotopic compositions showed that the saltwater intrusion is the predominant factor of increasing salinity in groundwater, followed by water-rock interaction (e.g. mineral weathering and ion exchange), and evaporation. Sources of specific ions (Ca and F) are dominated by mineral weathering-dissolution rather than the saltwater intrusion. Furthermore, anthropogenic activities are the dominant cause of groundwater nitrate pollution in the coastal area around Bohai sea. This type of pollution is most serious in Liaodong Bay due to the industrial waste, fertilizers, pesticides, and domestic sewage. It is followed by pollution in Qinhuangdao due to agricultural and domestic factors, and pollution in Laizhou Bay due to domestic sewage. The source of high fluorine in groundwater is the dissolution of fluorine-containing minerals caused by saltwater intrusion. The degree of groundwater fluorine pollution is as follows: Liaodong Bay Tianjin Qinhuangdao Laizhou Bay.
机译：进行了全面的研究以确定盐度和地球化学过程的起源，并区分蒸发，混合和水岩相互作用在地下水化学上的蒸发，混合和水岩相互作用（SWI）或Palaeo-Saltwater入侵（PSWI）的作用在中国渤海周围的沿海含水层。为此目的，施加地球化学和多变量统计方法。结果表明，渤海周边的入侵面积可分为：（i）古咸水入侵区（包括莱州湾南部，天津和辽东湾北部的攀津），和（二）现代海水入侵区。所选离子（Na + / Cl-和BR-/ Cl-）和同位素组合物的分析表明，盐水侵入是地下水中盐度升高的主要因素，其次是水岩相互作用（例如矿物风化和离子交换），和蒸发。特定离子（Ca和F）的来源由矿化风化 - 溶解而不是盐水侵入。此外，人类学活动是渤海沿海地区地区地区地区硝态污染的主导原因。由于工业废物，肥料，杀虫剂和生活污水，这种类型的污染在辽东湾最严重。秦皇岛污染由于农业和国内因素，由于国内污水，莱州海湾污染。地下水中的高氟来源是由咸水侵入引起的含氟矿物质的溶解。地下水氟污染程度如下：辽东湾＆天津＆秦皇岛＆莱州湾。

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  • 来源
    《Journal of Asian earth sciences》 |2021年第1期|104830.1-104830.14|共14页
  • 作者

    Xu Xingyong; Xiong Guiyao; Chen Guangquan; Fu Tengfei; Yu Hongjun; Wu Jichun; Liu Wenquan; Su Qiao; Wang Yancheng; Liu Shengfa; Shi Xuefa;

  • 作者单位

    Minist Nat Resources Inst Oceanog 1 Key Lab Marine Sedimentol & Environm Geol Qingdao 266061 Peoples R China|Qingdao Natl Lab Marine Sci & Technol Lab Marine Geol Qingdao 266237 Peoples R China;

    Nanjing Univ Key Lab Surficial Geochem Minist Educ Sch Earth Sci & Engn Nanjing 210023 Peoples R China;

    Minist Nat Resources Inst Oceanog 1 Key Lab Marine Sedimentol & Environm Geol Qingdao 266061 Peoples R China|Qingdao Natl Lab Marine Sci & Technol Lab Marine Geol Qingdao 266237 Peoples R China;

    Minist Nat Resources Inst Oceanog 1 Key Lab Marine Sedimentol & Environm Geol Qingdao 266061 Peoples R China|Qingdao Natl Lab Marine Sci & Technol Lab Marine Geol Qingdao 266237 Peoples R China;

    Minist Nat Resources Inst Oceanog 1 Key Lab Marine Sedimentol & Environm Geol Qingdao 266061 Peoples R China|Qingdao Natl Lab Marine Sci & Technol Lab Marine Geol Qingdao 266237 Peoples R China;

    Nanjing Univ Key Lab Surficial Geochem Minist Educ Sch Earth Sci & Engn Nanjing 210023 Peoples R China;

    Minist Nat Resources Inst Oceanog 1 Key Lab Marine Sedimentol & Environm Geol Qingdao 266061 Peoples R China|Qingdao Natl Lab Marine Sci & Technol Lab Marine Geol Qingdao 266237 Peoples R China;

    Minist Nat Resources Inst Oceanog 1 Key Lab Marine Sedimentol & Environm Geol Qingdao 266061 Peoples R China|Qingdao Natl Lab Marine Sci & Technol Lab Marine Geol Qingdao 266237 Peoples R China;

    Minist Nat Resources Inst Oceanog 1 Key Lab Marine Sedimentol & Environm Geol Qingdao 266061 Peoples R China|Qingdao Natl Lab Marine Sci & Technol Lab Marine Geol Qingdao 266237 Peoples R China;

    Minist Nat Resources Inst Oceanog 1 Key Lab Marine Sedimentol & Environm Geol Qingdao 266061 Peoples R China|Qingdao Natl Lab Marine Sci & Technol Lab Marine Geol Qingdao 266237 Peoples R China;

    Minist Nat Resources Inst Oceanog 1 Key Lab Marine Sedimentol & Environm Geol Qingdao 266061 Peoples R China|Qingdao Natl Lab Marine Sci & Technol Lab Marine Geol Qingdao 266237 Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    Seawater intrusion; Groundwater evolution; Evaporation; Pollution source; Nitrate; Fluorine;

    机译：海水侵入;地下水进化;蒸发;污染源;硝酸盐;氟;

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