Assessing the distribution and ecological risks of heavy metals in surface sediments of the Maowei Sea estuary, Guangxi

YAN Kun; PANG Guo-Tao; LI Wei; MAO Fang-Song

doi:10.11720/wtyht.2022.1470

2022 Vol. 46, No. 4

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Article navigation > Geophysical and Geochemical Exploration > 2022 > 46(4): 1030-1036

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YAN Kun, PANG Guo-Tao, LI Wei, MAO Fang-Song. 2022. Assessing the distribution and ecological risks of heavy metals in surface sediments of the Maowei Sea estuary, Guangxi. Geophysical and Geochemical Exploration, 46(4): 1030-1036. doi: 10.11720/wtyht.2022.1470

Citation:

YAN Kun, PANG Guo-Tao, LI Wei, MAO Fang-Song. 2022. Assessing the distribution and ecological risks of heavy metals in surface sediments of the Maowei Sea estuary, Guangxi. Geophysical and Geochemical Exploration, 46(4): 1030-1036. doi: 10.11720/wtyht.2022.1470

Assessing the distribution and ecological risks of heavy metals in surface sediments of the Maowei Sea estuary, Guangxi

1. Yantai Geological Survey Center of Coastal Zone, China Geological Survey, Yantai 264000, China；
2. School of Environmental Studies, China University of Geosciences(Wuhan), Wuhan 430000, China

Received Date: 21 August 2021

Revised Date: 20 August 2022

Publish Date: 17 August 2022

Abstract

Abstract

A total of 13 surface sediment samples were collected from estuaries of the Maoling, Dalan, and Qinjiang rivers for heavy metal analysis, aiming to study the distribution characteristics and ecological risk of heavy metals in the surface sediments of the Maowei Sea estuary. The results are as follows. The average contents of heavy metals As, Cd, Cr, Cu, Hg, Pb, and Zn in Maowei Sea sediments were 7.78×10-6, 0.14×10-6, 37.6×10-6, 18.9×10-6, 0.0048×10-6, 22.5×10-6, and 54.7×10-6, respectively. They are all lower than the class-I standard specified in GB18668—2002. The heavy metals in the sediments show quite different spatial distribution, with high content of heavy metals concentrating in the industrial zone to the east of the Maowei Sea and near the Maoling River to the west of the Maowei Sea. The analysis of heavy metal pollution shows that most elements are at levels of no pollution to moderate pollution, and Cr is at a medium pollution level. As indicated by the ecological risk analysis, the heavy metals generally show potentially low potential risks, and Hg and Cd in the industrial zone to the east show moderate ecological risks. The sources of heavy metal pollutants were explored through correlation analysis, cluster analysis, and principal component analysis. The results show that heavy metal pollution is mainly controlled by rivers, and Hg, As and Cd are also affected by wastewater discharged from the port industrial zone. This comprehensive study shows that the Maowei Sea has a good ecological environment overall, but it is recommended to focus on the drainage of heavy metal pollution in the industrial zone to the west of the Maowei Sea.
- Maowei Sea /
- estuary /
- sediments /
- heavy metals /
- risk assessment

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References

[1]	贾振邦, 霍文毅. 应用次生相富集系数评价柴河沉积物重金属污染[J]. 北京大学学报:自然科学版, 2000, 36(6):808-812. Google Scholar
[2]	Jia Z B, Huo W Y. Secondary phase enrichment factor for evaluation of heavy metal pollution of sediment in the Chai River[J]. Acta Scicentiarum Naturalum Universitis Pekinesis, 2000, 36(6):808-812. Google Scholar
[3]	张少峰, 林明裕, 魏春雷, 等. 广西钦州湾沉积物重金属污染现状及潜在生态风险评价[J]. 海洋通报, 2010, 29(4):450-454. Google Scholar
[4]	Zhang S F, Lin M Y, Wei C L. et al. Pollution assessment and potential ecological risk evolution for heavy metals in the sediments of Qinzhou Bay[J]. Marine Science Bulletin, 2010, 29(4):450-454. Google Scholar
[5]	田海涛, 胡希声, 张少峰, 等. 茅尾海表层沉积物中重金属污染及潜在生态风险评价[J]. 海洋环境科学, 2014, 33(2):187-191. Google Scholar
[6]	Tian H T, Hu X S, Zhang S F, et al. Distributionandpotential ecological risk assessment of heavy metals insurface sediments of Maowei Sea[J]. Marine Environmental Science, 2014, 33(2):187-191. Google Scholar
[7]	张丹, 黎大荣, 陈建华, 等. 钦州湾及其入海河流表层沉积物中重金属分布及污染特征分析[J]. 安全与环境工程, 2014, 21(5):11-15. Google Scholar
[8]	Zhang D, Li D R, Chen J H, et al. Distribution and pollution characteristics of heavy metals in marine and riverine sediments of Qinzhou Bay,China[J]. Safety and Environmental Engineering, 2014, 21(5):11-15. Google Scholar
[9]	舒俊林, 王运芳, 韦细姣. 钦州湾表层沉积物重金属分布特征[J]. 广西科学院学报, 2013, 29(4):224-226. Google Scholar
[10]	Shu J L, Wang Y F, Wei X J. Spatial distribution of heavy metals in surface sediment from Qin Zhou Bay[J]. Journal of Guangxi Academy of Sciences, 2013, 29(4):224-226. Google Scholar
[11]	GB/T 12763.8—2007海洋调查规范第8部分:海洋地质地球物理调查[S]. Google Scholar
[12]	GB/T 12763.8—2007 Specifications for marine survey part 8: Marine Geological and geophysical survey[S]. Google Scholar
[13]	GB/T 20260—2006海底沉积物化学分析方法[S]. Google Scholar
[14]	GB/T 20260—2006 Methods for chemical analysis of seafloor sediments[S]. Google Scholar
[15]	丁喜桂, 叶思源, 高宗军. 近海沉积物重金属污染评价方法[J]. 海洋地质动态, 2005, 21(8):31-36,38. Google Scholar
[16]	Ding X G, Ye S Y, Gao Z J. Methods of heavy metal pollution evaluation for offshore sediments[J]. Marine Geology Letters, 2005, 21(8):31-36,38. Google Scholar
[17]	Muller G. Index of geoaccumulation in sediments of the Rhine River[J]. Geojournal, 1969, 2(3):108-118. Google Scholar
[18]	Hakanson L. An ecological risk index for aquatic pollution control:A sedimentological approach[J]. Water Research, 1980, 14(8):975-1001. Google Scholar
[19]	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. Google Scholar
[20]	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. Google Scholar
[21]	袁国明, 何桂芳. 广东柘林湾至大埕湾海域表层沉积物重金属分布与环境地球化学特征[J]. 地球与环境, 2015, 43(2):190-197. Google Scholar
[22]	Yuan G M, He G F. Distribution and environmental geochemistry characteristics of heavy metals in surface sediment from Zhelin Bay to Dacheng Bay,Guangdong Province,China[J]. Earth and Environment, 2015, 43(2):190-197. Google Scholar
[23]	吴振, 王松涛, 刘金庆, 等. 日照市海岸带土壤和海底沉积物重金属分布与环境质量评价[J]. 海洋地质与第四纪地质, 2019, 39(1):59-68. Google Scholar
[24]	Wu Z, Wang S T, Liu J Q, et al. Distribution of heavy metals in soils and surface sediments along Rizhao coast and environmental assessment[J]. Marine Geology & Quaternary Geology, 2019, 39(1):59-68. Google Scholar
[25]	闫兴成, 杨晓薇, 黄烯茜, 等. 太湖主要入湖河口表层沉积物重金属分布特征及风险评价[J]. 生态环境学报, 2016, 25(9):1515-1521. Google Scholar
[26]	Yan X C, Yang X W, Huang X Q, et al. Distribution and risk assessment of heavy metals in the surface estuarine sediments of main inflow rivers in Taihu Lake[J]. Ecology and Environmental Sciences, 2016, 25(9):1515-1521. Google Scholar
[27]	王勤, 彭渤, 方小红, 等. 湘江长沙段沉积物重金属污染特征及其评价[J]. 环境化学, 2020, 39(4):999-1011. Google Scholar
[28]	Wang Q, Peng B, Fang X H, et al. Characteristics and assessment of heavy metal contamination in sediments from Changsha section of the Xiangjiang River,Hunan Province of China[J]. Environmental Chemistry, 2020, 39(4):999-1011. Google Scholar
[29]	黎清华, 万世明, 李安春, 等. 广西钦州湾—防城港潮间带表层沉积物重金属生态风险评价[J]. 海洋科学进展, 2012, 30(1):141-154. Google Scholar
[30]	Li Q H, Wan S M, Li A C, et al. Ecological risk assessment of heavy metals in sediments of the intertidal zone from the Qinzhou Bay to the Fangcheng Port of Guangxi Province[J]. Advances in Marine Science, 2012, 30(1):141-154. Google Scholar
[31]	李树华. 中国海湾志广西海湾分册[M]. 北京: 海洋出版社, 1993. Google Scholar
[32]	Li S H. China Bay chronicle Guangxi Bay volume[M]. Beijing: China Ocean Press, 1993. Google Scholar
[33]	中国水产科学院南海水产研究所. 茅尾海生态环境现状调查与评估报告[R]. Google Scholar
[34]	Nanhai Fisheries Research Institute,Chinese Academy of Fishery Sciences. Investigation and assessment report on ecological environment of Maowei Sea[R]. Google Scholar
[35]	肖彩玲, 陈路锋, 李雁宾. 胶州湾沉积物重金属分布特征及生态风险评价[J]. 中国科技论文, 2017, 12(9):1079-1086. Google Scholar
[36]	Xiao C L, Chen L F, Li Y B. Distribution characteristics and potential risk assessment of heavy metals in the sediment of Jiaozhou Bay[J]. China Sciencepaper, 2017, 12(9):1079-1086. Google Scholar
[37]	冯晓博, 肖凯, 李海龙, 等. 广东海陵岛北部海域表层沉积物重金属分布特征与污染评价[J]. 海洋环境科学, 2021, 40(4):507-514. Google Scholar
[38]	Feng X B, Xiao K, Li H L, et al. Distribution characteristics and pollution assessment of heavy metals in the surface sediments in the northern Hailing island sea areas,Guangdong province[J]. Marine Environmental Science, 2021, 40(4):507-514. Google Scholar
[39]	李录峰, 刘爽, 谢垚晶, 等. 条子河表层沉积物中重金属污染特征及风险评价[J]. 中国科技论文, 2015, 10(15):1735-1740. Google Scholar
[40]	Li L F, Liu S, Xie Y J, et al. Pollution and ecological risk assessment of heavy metals in surface sediments of Tiaozi River[J]. China Sciencepaper, 2015, 10(15):1735-1740. Google Scholar
[41]	林红梅, 王伟力, 林彩, 等. 钦州湾及其邻近海域重金属的时空变化特征和影响因素[J]. 应用海洋学学报, 2020, 39(4):490-500. Google Scholar
[42]	Lin H M, Wang W L, Lin C, et al. Temporal and spatial variations of heavy metals and influencing factors in Qinzhou Bay and its adjacent waters in 2013-2014[J]. Journal of Applied Oceanography, 2020, 39(4):490-500. Google Scholar
[43]	朱学韬, 林海英, 冯庆革, 等. 广西北部湾表层沉积物重金属污染水平、生态风险评价和源分析[J]. 环境工程, 2021, 39(8):69-76. Google Scholar
[44]	Zhu X T, Lin H Y, Feng Q G, et al. Pollution and risk assessment,source analysis of heavy metals in surface sediments of Beibu Gulf,Guangxi[J]. Environmental Engineering, 2021, 39(8):69-76. Google Scholar