Abstract：In order to reveal the geochemical characteristics of trace elements in marine surface sediments in Guangdong-Macao in-depth cooperation zone in Hengqin, the authors analyzed the grain size of surface sediments and 14 trace elements. The distribution, source and control factors of trace elements in surface sediments were discussed, combined with element correlation analysis and factor analysis, and the potential ecological risk of heavy metal elements were evaluated. The results are as follows. ① There are five types of surface sediments in the cooperation zone, including sand (S), muddy sand (mS), sandy silt (sZ), silt (Z) and mud (M). ② The content of Zn, V, Cr and Ba in surface sediments of the cooperation zone is relatively high, with an average of more than 100×10-6. The content of Ba is the highest with an average of 431.13×10-6, and content of Cd is the lowest with an average of 0.73×10-6. The average content of other elements is between 15.95×10-6 to 83.03×10-6. The surface sediments in the cooperation zone are enriched in the heavy metals, such as Cd, Pb, Zn, As, and Cu, compared with the sediments in Pearl River. ③ Natural weathering of land rock and artificial discharge are the main source of the trace elements in surface sediments of the cooperation zone. The content variation of Sc, Co, Ni and Ga are mainly controlled by sedimentary hydrodynamic environment, while the content variation of Ba and Cd are controlled by human activities. And the contents variation of Pb and Zn are influenced by both natural source and human activities. ④ The average potential ecological risk index of heavy metals in surface sediments in the cooperation zone is 140.79, in generally serious state. This is mainly caused by Cd, indicating the monitoring of Cd should be strengthened. The research results could provide scientific basis for the sustainable development, environmental protection and governance of Guangdong-Macao in-depth cooperation zone in Hengqin.
阳峰, 陆野, 李诗颖, 林振文, 郑思琦, 罗俊超, 郭峰. 横琴粤澳深度合作区海域表层沉积物微量元素地球化学特征[J]. 中国地质调查, 2024, 11(6): 76-85.
YANG Feng, LU Ye, LI Shiying, LIN Zhenwen, ZHENG Siqi, LUO Junchao, GUO Feng. Geochemical characteristics of trace elements in marine surface sediments of Guangdong-Macao In-Depth Cooperation Zone in Hengqin. , 2024, 11(6): 76-85.
[1] 金秉福,林振宏,季福武.海洋沉积环境和物源的元素地球化学记录释读[J].海洋科学进展,2003,21(1):99-106. Jin B F,Lin Z H,Ji F W.Interpretation of element geochemical records of marine sedimentary environment and provenance[J].Advances in Marine Science,2003,21(1):99-106. [2] Sun Y,Liu B L,Zheng H Y,et al.Trace element geochemistry of sediments in the Pearl River Estuary and its implication for provenance[J].Regional Studies in Marine Science,2024,70:103388. [3] Sirocko F,Garbe-Schönberg D,Devey C.Processes controlling trace element geochemistry of Arabian Sea sediments during the last 25,000 years[J].Global and Planetary Change,2000,26(1-3):217-303. [4] Heimbürger L E,Cossa D,Thibodeau B,et al.Natural and anthropogenic trace metals in sediments of the Ligurian Sea (Northwestern Mediterranean)[J].Chemical Geology,2012,291:141-151. [5] 孙维萍,扈传昱,韩正兵,等.南极普里兹湾表层沉积物微量元素分布特征及其物源指示意义[J].沉积学报,2016,34(2):308-314. Sun W P,Hu C Y,Han Z B,et al.Distribution and sources of trace metals in the surface sediments of Prydz Bay,Antarctica[J].Acta Sedimentologica Sinica,2016,34(2):308-314. [6] 张从伟,瞿洪宝,熊元凯,等.三亚近岸海域表层沉积物微量元素地球化学特征[J].海洋学研究,2021,39(3):72-83. Zhang C W,Qu H B,Xiong Y K,et al.Geochemical characteristics of trace elements in surface sediments from Sanya offshore area[J].Journal of Marine Sciences,2021,39(3):72-83. [7] 杨蕾. 珠江磨刀门河口的沉积化学环境研究[D].广州:中山大学,2006. Yang L.Study on Environmental Geochemistry of the Sediments in Modaomen Estuary of the Pearl River[D].Guangzhou:Sun Yat-Sen University,2006. [8] 李平,郭晓娟,杨清书,等.珠江磨刀门河口表层沉积物中重金属的分布特征及生态风险评价[J].海洋环境科学,2017,36(5):746-753. Li P,Guo X J,Yang Q S,et al.Distribution characteristics and ecological risk assessment of heavy metals in surface sediments in Modaomen distributary mouth of Pearl River Estuary[J].Marine Environmental Science,2017,36(5):746-753. [9] 高时友,何用,卢陈,等.磨刀门口夏冬季沿岸流特征及成因分析[J].海洋学报,2017,39(5):1-9. Gao S Y,He Y,Lu C,et al.The characteristics of alongshore current in flood and the dry season in Modaomen Estuary of the Pearl River and the reason analysis[J].Haiyang Xuebao,2017,39(5):1-9. [10] 陈晖,刘坤松,郭晓娟,等.珠江磨刀门河口表层沉积物磁性特征及其动力沉积环境意义[J].海洋学报,2017,39(3):44-54. Chen H,Liu K S,Guo X J,et al.Magnetic properties of surficial sediment and its implication for sedimentation dynamic environment in the Modaomen Outlet of the Pearl River Estuary[J].Haiyang Xuebao,2017,39(3):44-54. [11] 蔡华阳,杨昊,郭晓娟,等.珠江磨刀门河口径潮动力耦合条件下余水位的多时空尺度分析[J].海洋学报,2018,40(7):55-65. Cai H Y,Yang H,Guo X J,et al.Investigation of temporal-spatial distribution patterns of residual water level under the influence of tide-river interaction in the Modaomen Estuary,Zhujiang River[J].Haiyang Xuebao,2018,40(7):55-65. [12] 贾良文,吕晓莹,程聪,等.珠江口磨刀门月际尺度地貌演变研究[J].海洋学报,2018,40(9):65-77. Jia L W,Lü X Y,Cheng C,et al.Study on the morphological evolution of the Modaomen Estuary in monthly scale[J].Haiyang Xuebao,2018,40(9):65-77. [13] 蒋陈娟,周佳楠,杨清书.珠江磨刀门河口潮汐动力变化对人类活动的响应[J].热带海洋学报,2020,39(6):66-76. Jiang C J,Zhou J N,Yang Q S.Effects of human intervention on tidal dynamics in the Modaomen Estuary,Pearl River[J].Journal of Tropical Oceanography,2020,39(6):66-76. [14] 覃业曼,陆虎,谢子强,等.珠江口磨刀门水域水质状况调查研究[J].中国资源综合利用,2021,39(8):61-65. Qin Y M,Lu H,Xie Z Q,et al.Investigation research on water quality of Modaomen waters of the Pearl River Estuary[J].China Resources Comprehensive Utilization,2021,39(8):61-65. [15] 蓝先洪. 珠江口表层沉积物的地球化学特征[J].海洋湖沼通报,1989,39(4):53-61. Lan X H.Geochemical charateristics of surface sediment in the Pearl River Estuary[J].Transactions of Oceanology and Limnology,1989,39(4):53-61. [16] 甘华阳,梁开,郑志昌.珠江口表层沉积物中微量元素地球化学[J].海洋地质与第四纪地质,2010,30(4):131-139. Gan H Y,Liang K,Zheng Z C.Trace elements geochemical characteristics of the surface sediments of Pear River Estuary[J].Marine Geology & Quaternary Geology,2010,30(4):131-139. [17] 广东省海岸带综合地质调查-横琴新区调查示范项目成果报告[R].广州:广东省海洋地质调查院,2021. The Reports of Comprehensive Geological Survey of Coastal Zone in Guangdong Province-Survey Demonstration Project of Henqin New Aera[R].Guangzhou:Marine Geological Survey Institude of Guangdong Province,2021. [18] Folk R L,Ward W C.Brazos river bar [Texas]:A study in the significance of grain size parameters[J].Journal of Sedimentary Petrology,1957,27(1):3-26. [19] Hakanson L.An ecological risk index for aquatic pollution control.a sedimentological approach[J].Water Research,1980,14(8):975-1001. [20] 甘华阳,梁开,郑志昌.珠江口沉积物的重金属背景值及污染评价分区[J].地球与环境,2010,38(3):344-350. Gan H Y,Liang K,Zheng Z C.Background values,contamination assessment and zoning of heavy metals in sediments of the Pearl River Estuary[J].Earth and Environment,2010,38(3):344-350. [21] 徐争启,倪师军,庹先国,等.潜在生态危害指数法评价中重金属毒性系数计算[J].环境科学与技术,2008,31(2):112-115. Xu Z Q,Ni S J,Tuo X G,et al.Calculation of heavy metals’ toxicity coefficient in the evaluation of potential ecological risk index[J].Environmental Science & Technology,2008,31(2):112-115. [22] Taylor S R,McLennan S M.The Continental Crust:its Composition and Evolution[M].Oxford:Blackwell Scientific Pub,1985:29-45. [23] 赵一阳,鄢明才.中国浅海沉积物地球化学[M].北京:科学出版社,1994. Zhao Y Y,Yan M C.Geochemistry of Sediments of the China Shelf Sea[M].Beijing:Science Press,1994. [24] 马胜中,倪玉根,林进清,等.1∶5万珠江口内伶仃洋海洋区域地质调查(试点)成果报告[R].广州:广州海洋地质调查局,2015. Ma S Z,Ni Y G,Lin J Q,et al.The Reports of Geological Survey of 1∶50 000 Lingdingyang,Pearl River Estuary[R].Guangzhou:Guangzhou Marine Geological Survey,2015. [25] 王惠艳,胡树起,汤丽玲,等.珠江口海域与南黄海海域表层沉积物地球化学特征[J].物探与化探,2014,38(1):51-57. Wang H Y,Hu S Q,Tang L L,et al.Geochemical characteristics of surface sediments from the sea areas of Pearl River Estuary and South Yellow Sea[J].Geophysical and Geochemical Exploration,2014,38(1):51-57. [26] Ouyang T P,Zhu Z Y,Kuang Y Q,et al.Dissolved trace elements in river water:spatial distribution and the influencing factor,a study for the Pearl River Delta Economic Zone,China[J].Environmental Geology,2006,49(5):733-742. [27] 张晓东,翟世奎,许淑梅,等.长江口外缺氧区沉积物中氧化还原敏感性元素的“粒控效应”[J].中国海洋大学学报,2005,35(5):868-874. Zhang X D,Zhai S K,Xu S M,et al.The “Grain Size Effect” of redox sensitive elements in the sediments in the Hypoxia Zone of the Changjiang Estuary[J].Periodical of Ocean University of China,2005,35(5):868-874. [28] Hu B Q,Cui R Y,Li J,et al.Occurrence and distribution of heavy metals in surface sediments of the Changhua River Estuary and adjacent shelf (Hainan Island)[J].Marine Pollution Bulletin,2013,76(1-2):400-405. [29] Cai Y Q,Mao L J,Deng X Q,et al.Trace elements in surface sediments from Xinyanggang River of Jiangsu Province,China:spatial distribution,risk assessment and source appointment[J].Marine Pollution Bulletin,2023,187:114550. [30] 王建丰,雷天柱,张生银,等.刘家峡水库表层沉积物微量元素地球化学特征[J].沉积与特提斯地质,2018,38(3):51-59. Wang J F,Lei T Z,Zhang S Y,et al.Trace element geochemistry of the surface sediments in the Liujiaxia Reservoir,Gansu[J].Sedimentary Geology and Tethyan Geology,2018,38(3):51-59. [31] 蔡观强,邱燕,彭学超,等.南海西南海域表层沉积物微量和稀土元素地球化学特征及其意义[J].海洋地质与第四纪地质,2010,30(5):53-62. Cai G Q,Qiu Y,Peng X C,et al.the geochemical characteristics of trace elements and REES in surficial sediments of the southwestern South China sea and their implications[J].Marine Geology & Quaternary Geology,2010,30(5):53-62. [32] 张从伟,李亮,龙根元,等.三亚东部近岸海域表层沉积物重金属元素地球化学特征及环境质量评价[J].海洋学研究,2018,36(2):55-63. Zhang C W,Li L,Long G Y,et al.Geochemical characteristics and environmental assessment of heavy metal elements in surface sediments from the offshore area of eastern Sanya[J].Journal of Marine Sciences,2018,36(2):55-63. [33] 罗昆,李亮,龙根元,等.海南岛南部海域沉积物重金属污染及潜在生态风险评价[J].上海海洋大学学报,2017,26(1):85-93. Luo K,Li L,Long G Y,et al.Heavy metal pollution and their ecological risk assessment in sediments from southern Hainan Island[J].Journal of Shanghai Ocean University,2017,26(1):85-93. [34] 国家环境保护局.GB 3097—1997 海水水质标准[S].北京:环境科学出版社,1997. State Bureau of Environment Protection.GB 3097—1997 Sea Water Quality Standard[S].Beijing:Environmental Science Press,1997. [35] 熊春晖,张瑞雷,吴晓东,等.滆湖表层沉积物营养盐和重金属分布及污染评价[J].环境科学,2016,37(3):925-934. Xiong C H,Zhang R L,Wu X D,et al.Distribution and pollution assessment of nutrient and heavy metals in surface sediments from Lake Gehu in Southern Jiangsu Province,China[J].Environmental Science,2016,37(3):925-934.
2024, Vol. 11 
